Mostly Unpublished NES Cheats ;)

red    marked cheats are unique, not listed on any site (tell me if not).
brown marked cheats from various other sources like gamefaqs.com etc, checked and fixed if necessary.
gray   marked disabled or missed cheats buried inside game ROM.

  83-in-1 [p1][!], 100-in-1 (MG109) [p1][!]
  150-in-1 [p1][!], 200-in-1 - Elfland (Unl)[U][!]
  Super HIK 300-in-1 1994 [p1][!], 9999-in-1 [p1][!], 9999999-in-1 [p1], 10000000-in-1 [p1][!]
  Coolboy 198-in-1, Coolboy 400-in-1
  100 Man $ Kid - Maboroshi no Teiou Hen, Casino Kid
  Taiwan Mahjong 16, Tai Wan Ma Que 16
  1943
  1999 - Hore Mitakotoka! Seikimatsu
  3D Block
  720
  8 Eyes
  AV Jiu Ji Ma Jiang 2
  AV Mahjongg
  AV Hanafuda Club
  AV Pachi-Slot, Hot Slot
  AV Pretty Girl Fighting, AV Mei Shao Nv Zhan Shi
  AV Soccer, Ultimate League Soccer, Fuetball
  Aa Yakyuu Jinsei Icchokusen
  Abadox
  Abarenbou Tengu, Zombie Nation
  Aces - Iron Eagle 3, Ultimate Air Combat
  Action in New York, Final Mission, SCAT - Special Cybernetic Attack Team
  Addams Family, The
  Addams Family, The - Pugsley's Scavenger Hunt
  Advanced Dungeons & Dragons - Dragon Strike
  Adventures of Lolo (US)
  Adventures of Lolo 2 (US), Adventures of Lolo (Japan)
  After Burner, After Burner II
  Ai Sensei no Oshiete - Watashi no Hoshi
  Airwolf (US)
  Akira
  Aladdin 3, Magic Carpet 1001
  All-Pro Basketball, Zenbei!! Pro Basket
  Alpha Mission, ASO - Armored Scrum Object
  Argus
  Arkanoid 2
  Artelius
  Asterix
  Astro Fang - Super Machine
  Astyanax, Lord of King, The
  Atlantis no Nazo
  Attack of the Killer Tomatoes
  B-Wings
  Baby Boomer
  Bakushou! Star Monomane Shitennou
  Bakushou!! Jinsei Gekijou 2
  Banana
  Banana Prince, Bananan Ouji no Daibouken
  Barbie
  Bard's Tale II, The - The Destiny Knight
  Baseball Star - Mezase Sankanou!!, Baseball Stars
  Bases Loaded 3, Moe Pro! '90 - Kandou Hen
  Batman Returns
  Batsu & Terii
  Battle Baseball
  Battle City
  Battle Formula, Super Spy Hunter
  Battle Stadium - Senbatsu Pro Yakyuu
  Battle Storm
  Battleship
  Battletoads & Double Dragon - The Ultimate Team
  Be-Bop-Highschool - Koukousei Gokuraku Densetsu
  Bee 52
  Best Keiba - Derby Stallion
  Best Play Pro Yakyuu
  Best Play Pro Yakyuu '90
  Best Play Pro Yakyuu Special
  Best Play Pro Yakyuu II
  Best of the Best - Championship Karate
  Big Nose Freaks Out
  Big Nose the Caveman
  Bill Elliott's NASCAR Challenge
  Bio Hazard
  Bionic Commando, Hitler no Fukkatsu - Top Secret
  Black Bass 2, The, Black Bass USA, The
  Blodia Land - Puzzle Quest
  Blues Brothers, The
  Bokosuka Wars
  Bomberman II, Dynablaster
  Boogerman
  Break Time - The National Pool Tour
  Bucky O'Hare
  Bugs Bunny Crazy Castle, The, Bugs Bunny Fun House
  Buzz and Waldog (USA), Ko Ko Eo Deu Ben Ce (Korea)
  Cadillac
  California Games
  Captain Ed
  Captain Saver, Power Blade 2
  Captain Skyhawk
  Captain Tsubasa, Tecmo Cup - Soccer Game, Tecmo Cup - Football Game
  Captain Tsubasa Vol. II - Super Striker
  Castelian, Kyoro Chan Land
  Castle Quest
  Castle of Deceit
  Castle of Dragon, Dragon Unit
  Castlevania II - Simon's Quest
  Caveman Ninja, Joe & Mac
  Challenge of the Dragon (Color Dreams)
  Chess Academys
  Chester Field - Ankoku Shin heno Chousen
  Chiki Chiki Machine Mou Race, Wacky Races
  Chiller
  Chinese Odyssey, A, Da Hua Xi You
  Chip's Challenge (Prototype)
  Chitei Senkuu Vazorudaa, Wurm
  Chou Hen, Galactic Crusader, Papillion
  Chu Da D
  Chubby Cherub, Obake no Q Tarou - Wanwan Panic
  Chuugoku Janshi Story - Tonpuu
  Chuugoku Senseijutsu
  Chuuka Taisen
  City Adventure Touch - Mystery of Triangle
  Clash at Demonhead, Dengeki - Big Bang!
  Columbus - Ougon no Yoake
  Commando, Senjou no Ookami
  Contra, Probotector, Contra 1993, Super Contra II
  Cool World
  Corvette ZR-1 Challenge, Race America
  Cosmic Epsilon
  Cosmic Wars
  Cosmos Cop
  Creatom
  Cross Fire
  Crystal Mines
  Crystalis, God Slayer - Haruka Tenkuu no Sonata
  Cyberball
  Cycle Race - Road Man
  Dai Meiro - Meikyuu no Tatsujin
  Daikaijuu Deburas
  Daiku no Gen San 2 - Akage no Dan no Gyakushuu
  Daiva - Imperial of Nirsartia
  Dalton McGuinty's Kids' Computer Game, M.C. Kids
  Dancing Blocks
  Darkman
  Dash Galaxy in the Alien Asylum
  Datach - Battle Rush - Build Up Robot Tournament
  Datach - Dragon Ball Z - Gekitou Tenkaichi Budou Kai
  Datach - J League Super Top Players
  Datach - Ultraman Club - Supokon Fight!
  Datach - Yuu Yuu Hakusho - Bakutou Ankoku Bujutsu Kai
  Datsugoku, POW - Prisoners of War
  Days of Thunder
  Deadly Towers, Mashou
  Deathbots
  Deep Dungeon 3 - Yuushi heno Tabi
  Derby Stallion - Zenkoku Han
  Destination Earthstar
  Diablo (Nanjing)
  Die Hard
  Digital Devil Monogatari - Megami Tensei
  Digital Devil Monogatari - Megami Tensei II
  Dizzy The Adventurer
  Doki! Doki! Yuuenchi, Trolls in Crazyland, The
  Don Doko Don
  Donald Land
  Dong Dong Nao II - Guo Zhong Ying Wen
  Donkey Kong Country 4
  Doraemon
  Doraemon (Waixing)
  Double Dragon II - The Revenge
  Double Dragon III - The Rosetta Stone, Double Dragon III - The Sacred Stones
  Double Strike, Twin Eagle (Sachen), Shuang Ying (Joy Van)
  Downtown - Nekketsu Koushin Kyoku - Soreyuke Daiundoukai
  Downtown Special - Kunio-kun no Jidaigeki Dayo Zenin Shuugou!
  Dragon Fighter (Sofel)
  Dragon Fighter (Flying Star, Unlicensed)
  Dragon Quest II, Dragon Warrior II
  Dragon Quest III, Dragon Warrior III
  Dragon Scroll - Yomigaerishi Maryuu
  Dragon Slayer 4 - Drasle Family, Legacy of the Wizard
  Dragon, The
  Dream Master
  Dreamworld Pogie (Codemasters, Prototype)
  Drop Zone
  Duck Tales, Wanpaku Duck Yume Bouken
  Dungeon & Magic - Swords of Element
  Dusty Diamond's All-Star Softball, Softball Tengoku
  Dynamite Bowl
  Earth Worm Jim 2 (Shin-Shin)
  Earth Worm Jim 2 (Super Game)
  Earth Worm Jim 3
  Egypt
  Eliminator Boat Duel
  Elite
  Elysion
  Emoyan no 10 Bai Pro Yakyuu
  Erunaaku no Zaihou
  Escape From Atlantis
  Esper Dream 2 - Aratanaru Tatakai
  Exciting Boxing
  F-1 Sensation, Formula 1 Sensation
  F-15 City War
  F1 Circus
  Famicom Disk System BIOS
  FamicomBox
  Famicom Jump II - Saikyou no 7 Nin
  Famicom Meijin Sen
  Famicom Wars
  Family Boxing, Ring King
  Family Circuit
  Family Circuit '91
  Family Computer - Othello, Othello
  Family Mahjong II - Shanghai heno Michi
  Family School
  Family Trainer - Athletic World, Athletic World
  Famista '89 - Kaimaku Han!!
  Famista '92
  Famista '93
  Famista '94
  Fantastic Adventures of Dizzy, The
  Fantasy Zone (SunSoft)
  Fantasy Zone (Tengen)
  Faria - A World of Mystery and Danger!, Faria
  Fighting Hero (Unl)
  Fighting Hero III
  Fighting Road
  Final Combat
  Final Fantasy III
  Final Fantasy V (Mars)
  Final Fight 3
  Fire 'n Ice, Solomon no Kagi 2 - Coolmin Tou Kyuushutsu Sakusen, Solomon's Key 2
  Fire Emblem
  Fire Emblem Gaiden
  Fire Hawk
  Flintstones, The - The Rescue of Dino & Hoppy
  Flipull - An Exciting Cube Game
  Flying Hero
  Flying Warriors, Hiryuu no Ken II - Dragon no Tsubasa
  Fong Shen Bang - Zhu Lu Zhi Zhan
  Free Fall, Sunday Funday (Wisdom Three)
  Freedom Force
  Fushigi no Umi no Nadia
  Fuzzical Fighter
  G.I. Joe
  G.I. Joe - The Atlantis Factor
  Galaxian
  Gambler Jiko Chuushin Ha - Mahjong Game
  Gambler Jiko Chuushin Ha 2
  Game Party
  Ganbare Goemon! - Karakuri Douchuu
  Ganbare Pennant Race!
  Garfield - A Week of Garfield
  Gargoyle's Quest II - The Demon Darkness, Red Ariimaa 2
  Gegege no Kitarou - Youkai Dai Makyou, Ninja Kid
  Ghoul School
  Gilligan's Island
  Goal! 2, Goal! Two, Goal!!
  Godzilla - Monster of Monsters!, Godzilla
  Golf '92, The
  Golgo 13 - Dai 1 Shou - Kamigami no Tasogare, Golgo 13 - Top Secret Episode
  Golgo 13 - The Riddle of Icarus, Mafat Conspiracy - Golgo 13
  Goonies II, The - Fratelli Saigo no Chousen, Goonies II, The
  Great Battle Cyber
  Great Deal
  Great Tank, Iron Tank
  Great Waldo Search, The
  Great Wall, The (Sachen)
  Guerilla War, Guevara
  Guardian Legend, The, Guardic Gaiden
  Gun Nac
  Gun Sight, Laser Invasion
  Gun.Smoke
  Hanafuda Yuukyou Den - Nagarebana Oryuu
  Hanjuku Eiyuu
  Harry's Legend, Titenic
  Hatris
  Heisei Tensai Bakabon
  Hell Fighter (Sachen)
  Hello Kitty World
  Hi no Tori - Houou Hen - Gaou no Bouken
  Highway Star, Rad Racer
  Hissatsu Doujou Yaburi
  Hissatsu Shigoto Nin
  Hit Marmot
  Hit the Ice
  Hokuto no Ken
  Holy Diver
  Home Alone 2 - Lost in New York
  Home Run Nighter '90 - The Pennant League
  Honoo no Doukyuuji - Dodge Danpei
  Honoo no Doukyuuji - Dodge Danpei 2
  Hook
  Hoshi no Kirby - Yume no Izumi no Monogatari, Kirby's Adventure
  Hototogisu
  Hottaaman no Chitei Tanken
  Hu Lu Jin Gang (Nanjing, NJ039)
  Huan Shi Lu (Nanjing, NJ034)
  Huang Di
  Huang Jin Tai Yang (Nanjing)
  Hudson Hawk
  Huge Insect
  Hunt for Red October, The
  HVC Kensa Cassette Controller Test
  Hydlide 3 - Yami Kara no Houmonsha
  I Love Softball
  Ide Yousuke Meijin no Jissen Mahjong 2
  Idol Shisen Mahjong, Tiles of Fate
  Ike Ike! Nekketsu Hockey Bu - Subette Koronde Dai Rantou
  Ikinari Musician
  Immortal, The
  Incredible Crash Dummies, The
  Indiana Jones and the Last Crusade (UBI Soft)
  Insector X
  International Cricket
  Ironsword - Wizards & Warriors II
  Isolated Warrior, Max Warrior - Wakusei Kaigenrei
  Itadaki Street - Watashi no Mise ni Yottette
  Jajamaru Gekimaden - Maboroshi no Kinmajou
  Jajamaru Ninpou Chou, Taro's Quest (Prototype)
  Jangou
  Jarinko Chie - Bakudan Musume no Shiawase Sagashi
  Jaws
  Jesus - Kyoufu no Bio Monster
  Jia A Fung Yun (Waixing)
  Jigoku Gokuraku Maru, Kabuki - Quantum Fighter
  Jikuu Yuuden - Debias
  Jin Yong Qun Xia Zhuan - Shu Jian Jiang Shan (Nanjing, NJ031)
  Jing Ke Xin Zhuan
  Journey to the West (Micro Genius)
  Jovial Race
  Jumbo Ozaki no Hole in One Professional
  Juuryoku Soukou Metal Storm, Metal Storm
  Kaettekita! Gunjin Shougi - Nanya Sore!
  Kagerou Densetsu
  Kaiketsu Yanchamaru 2 - Karakuri Land
  Kame no Ongaeshi - Urashima Densetsu, Xexyz
  Kamen Rider SD - Guranshokkaa no Yabou
  Karaoke Studio, Karaoke Studio Senyou Cassette Vol 1, Karaoke Studio Senyou Cassette Vol 2
  Kero Kero Keroppi no Daibouken 2 - Donuts Ike ha Oosawagi!
  Keroppi to Keroriinu no Splash Bomb!
  Kick Master
  Kid Icarus
  King Kong 2 - Ikari no Megaton Punch
  King Neptune's Adventure
  King of Fighters 96
  King of Kings
  Kinnikuman - Muscle Tag Match, M.U.S.C.L.E.
  Klash Ball
  Knight Rider
  Koushien
  Krion Conquest, The, Magical Doropie
  Krusty's Fun House
  Kujaku Ou 2
  Kunio-kun no Nekketsu Soccer League
  Kurogane Hiroshi no Yosou Daisuki! - Kachiuma Densetsu
  Kyatto Ninden Teyandee
  Kyonshiizu 2
  Kyuukyoku Harikiri Koushien
  Kyuukyoku Harikiri Stadium
  Kyuukyoku Harikiri Stadium - Heisei Gannen Han
  Kyuukyoku Harikiri Stadium 3
  Lagrange Point
  Last Armageddon
  Last Ninja, The
  Layla
  Legend of Prince Valiant, The
  Legends of the Diamond
  Lei Dian Huang Bi Ka Qiu Chuan Shuo (Nanjing, NJ046)
  Lethal Weapon (Taiwan)
  Liang Shan Ying Xiong (Nanjing, NJ023)
  Linus Spacehead's Cosmic Crusade, Cosmic Spacehead
  Lion King, The
  Little Magic
  Little Mermaid - Ningyo Hime, Little Mermaid, The
  Little Ninja Brothers, Super Chinese 2 - Dragon Kid
  Little Samson, Seirei Densetsu Lickle
  Locksmith
  Loopz
  Lost Word of Jenny
  Lunar Ball, Lunar Pool
  Lupin Sansei - Pandora no Isan
  Magic Bubble, Mermaids of Atlantis, Bubble Bath Babes, Soap Panic
  Magic Candle, The
  Magic Darts
  Magic Jewelry
  Magic Jewelry 2
  Magic Mathematics (Sachen)
  Magnum Kiki Ippatsu - Empire City - 1931
  Mahjan Samit Kabukicho Hen (Sachen), Mahjong World (Sachen)
  Mahjang Companion (Sachen)
  Mahjong Academy (Sachen)
  Mahjong Club - Nagatachou
  Mahjong RPG Dora Dora Dora
  Mahjong Taikai
  Mahjong Taisen
  Mahou no Princess Minky Momo - Remember Dream
  Majaventure - Mahjong Senki
  Majou Densetsu II - Daimashikyou Galious
  Maniac Mansion (Japan)
  Mappy Kids
  Mappy-Land
  Mario & Yoshi, Yoshi, Yoshi no Tamago
  Mario is Missing!
  Mario Open Golf, NES Open Tournament Golf
  Mario's Time Machine!
  Masuzoe Youichi - Icchou Made Famicom
  Mechanized Attack
  Meiji Ishin
  Meimon! Dai San Yakyuu Bu
  Meimon! Takonishi Ouendan - Kouha 6 Nin Shuu
  Meitantei Holmes - Kiri no London Satsujin Jiken
  Menace Beach
  Mendel Palace, Quinty
  Metal Fighter, Mei Loi Siu Ji (Sachen / Kinema Music / Color Dreams), Wei Lai Xiao Zi (Joy Van)
  Metal Flame Psybuster, Metal Mech - Man & Machine
  Metal Slader Glory
  Mezase Pachi Pro - Pachio-kun
  Mezase Top Pro - Green ni Kakeru Yume
  MiG 29 - Soviet Fighter
  Michael Andretti's World Grand Prix, Nakajima Satoru - F-1 Hero
  Mickey Mania, China Rabbit Baby
  Micro Machines
  Might and Magic
  Millionaire (Sachen)
  Minelvaton Saga
  Miracle Ropit's Adventure in 2100
  Mirai Senshi - Lios
  Mirai Shinwa Jarvas
  Mission Impossible
  Mito Koumon - Sekai Manyuu Ki
  Mitsume ga Tooru
  Mo Jie Ba Zhu (Nanjing, NJ079), Mo Jie Ta Shi (Nanjing)
  Mobile Suit Z Gundam - Hot Scramble
  Momotarou Densetsu
  Momotarou Densetsu Gaiden
  Money Game, The
  Money Game 2 - Kabutochou no Kiseki, The
  Monster In My Pocket
  Moon Crystal
  Moon Ranger
  Morita Kazuo no Shougi
  Mortal Kombat II/III Special (JY)
  Mortal Kombat V (YOKO)
  Motocross Champion
  Mouryou Senki Madara
  Ms. Pac-Man (Tengen)
  Musashi no Bouken
  Musashi no Ken - Tadaima Shugyou Chuu
  Mutant Virus, The
  Nagagutsu wo Haita Neko - Sekai Isshuu 80 Nichi Daibouken, Puss 'n Boots - Pero's Great Adventure
  Nakajima Satoru - F-1 Hero 2
  Namco Classic II
  Nangoku Shirei!! - Spy Vs Spy
  Nantettatte!! Baseball
  Napoleon Senki
  Navy Blue
  Ne Zha Chuan Qi (Nanjing, NJ036)
  Nekketsu Kakutou Densetsu
  Nekketsu! Street Basket - Ganbare Dunk Heroes
  New York Nyankies, Rockin' Kats
  Nightshade
  Nihonichi no Mei Kantoku
  Ninja Cop Saizou, Wrath of the Black Manta
  Ninja Gaiden 2 - The Dark Sword of Chaos, Ninja Ryukenden II - Ankoku no Jashin Ken, Shadow Warriors Episode II - The Dark Sword of Chaos
  Ninja Gaiden 3 - The Ancient Ship of Doom, Ninja Ryukenden III - Yomi no Hakobune
  Ninja Jajamaru - Ginga Daisakusen, Squashed (Prototype)
  Ninja-kun - Ashura no Shou
  Ninjara Hoi!
  Nintendo World Championships 1990
  Noah's Ark
  Nuts & Milk
  Ochin ni Toshi Puzzle Tonjan!
  Olympic IQ (Sachen)
  Operation Secret Storm
  Operation Wolf
  Over Horizon
  P'radikus Conflict, The
  Paaman - Enban wo Torikaese!!
  Paaman Part 2 - Himitsu Kessha Madoodan wo Taose!
  Pac-Mania
  Pachi-Slot Adventure 2 - Sorotta-kun no Pachi Slot Tanteidan
  Pachio-kun 2
  Pachio-kun 3
  Pachio-kun 4
  Pachio-kun 5
  Palamedes 2 - Star Twinkles
  Panda Prince
  Panic Restaurant, Wanpaku Kokkun no Gourmet World
  Paperboy
  Parallel World
  Parasol Henbee
  Parasol Stars - The Story of Bubble Bobble 3
  Paris-Dakar Rally Special
  Perfect Bowling
  Pescatore (Prototype)
  Pesterminator - The Western Exterminator
  Pipe Dream
  Pirates!
  Plasma Ball
  Platoon
  Pocahontas
  Pocahontas 2 (Super Game)
  Pocket Monster (Early Super Game), Panda World, Super PoPo's Adventure
  Pocket Monster Red (Waixing)
  Poke Block, Mahjong Block
  Poker Mahjong
  Pokemon Gold (Mars)
  Pole Chudes (Chudov)
  Power Blade, Power Blazer
  Power Rangers III
  Power Rangers IV
  Predator
  President no Sentaku
  Prince of Persia
  Pro Action Replay
  Pro Sport Hockey, USA Ice Hockey in FC
  Probotector II - Return of the Evil Forces, Super C, Super Contra
  Punisher, The
  Puyo Puyo
  Puzslot
  Puzznic
  Pyramid (Sachen)
  Pyramid II (Sachen)
  Qi Guo Da Zhan (Nanjing, NJ029)
  Quarter Back Scramble
  Quattro Adventure (Codemasters)
  Quattro Arcade (Codemasters)
  Quattro Sports, Super Sports Challenge (Codemasters)
  R.B.I. Baseball, Pro Yakyuu - Family Stadium, Atari RBI Baseball (VS)
  R.B.I. Baseball 2
  R.B.I. Baseball 3
  Racer Mini Yonku - Japan Cup
  Raid 2020 (Color Dreams)
  Raid on Bungeling Bay
  Rainbow Islands - The Story of Bubble Bobble 2 (US, Japan)
  Rainbow Islands - The Story of Bubble Bobble 2 (Europe)
  Rampage
  Rampart (Jaleco)
  Rasaaru Ishii no Childs Quest
  Ren & Stimpy Show, The
  Robin Hood - Prince of Thieves
  Robocop 2
  Robodemons (Clor Dreams)
  Rocketeer, The
  Rocman X (Sachen)
  Rod Land
  Roger Clemens MVP Baseball
  Rollerblade Racer
  Rolling Thunder
  Route-16 Turbo
  SD Battle Oozumou - Heisei Hero Basho
  SD Keiji - Blader
  Saint Saiya - Tian Ma Huan Xiang (Nanjing)
  Saiyuuki World
  Saiyuuki World 2 - Tenjoukai no Majin, Whomp'Em
  San Guo Zhi - CaoCao Zhuan (Nanjing, NJ018)
  San Guo Zhi - Qun Xiong Zheng Ba (Asder)
  Sangokushi II - Haou no Tairiku
  Sanrio Carnival
  Sanrio Cup - Pon Pon Volley
  Secret Scout (Color Dreams)
  Seikima II - Akuma no Gyakushuu
  Shanghai
  Shanghai 2
  Sheng Huo Lie Zhuan (C & E)
  Sherlock Holmes - Hakushaku Reijou Yuukai Jiken
  Shin 4 Nin Uchi Mahjong - Yakuman Tengoku
  Shin Moero!! Pro Yakyuu
  Shin Samurai Spirits 2 - Haoumaru Jigoku Hen
  Shingen The Ruler, Takeda Shingen 2
  Shougi Meikan '92
  Shougi Meikan '93
  Shougun
  Shufflepuck Cafe
  Shui Hu Shen Shou (Nanjing, NJ019)
  Side Pocket
  Silva Saga
  Silver Eagle (Sachen)
  Simpsons, The - Bart Vs. the Space Mutants
  Simpsons, The - Bart Vs. the World
  Simpsons, The - Bartman Meets Radioactive Man
  Skate or Die 2 - The Search for Double Trouble
  Sky Destroyer
  Sky Shark, 1945 (Pirate)
  Smash T.V.
  Smurfs, The
  Snow Bros.
  Somari, Sonic The Hedgehog, Super Sonic 5, Sonic 3D Blast 6 (NT)
  Space Hunter
  Space Shuttle Project
  Spelunker 2 - Yuusha heno Chousen
  Spiritual Warfare
  Splatter House - Wanpaku Graffiti
  Spy Hunter
  Square no Tom Sawyer
  Stanley - The Search for Dr. Livingston
  Star Force
  Star Luster
  Star Soldier, Star Soldier Special Version
  Star Trek V - The Final Frontier (Prototype)
  Star Wars - The Empire Strikes Back
  Sted - Iseki Wakusei no Yabou
  Street/Master Fighter II/III - The World Warriors (YOKO)
  Street Fighter III
  Strider
  Strike Wolf (TXC)
  StudyBox
  Stunt Kids
  Sugoro Quest - Dice no Senshitachi
  Summer Carnival '92 - Recca
  Super Chinese 3
  Super Contra 3, Contra Spirits
  Super Contra 7
  Super Contra X (TXC)
  Super Donkey Kong 2 (NT)
  Super Donkey Kong (NT, Ei-How Yang)
  Super Glove Ball
  Super Mario World
  Super Momotarou Dentetsu
  Super Pang
  Super Pang 2
  Super Pinball
  Super Rugby
  Super Shinobi
  Super Spike V'Ball, US Championship V'Ball
  Super Sprint
  Super Turrican
  Super Xevious - Gump no Nazo
  Superman
  Swamp Thing
  Swords and Serpents
  T & C 2 - Thrilla's Surfari
  Tag Team Pro-Wrestling, Tag Team Wrestling, Special Tag Team Pro-Wrestling
  Tai Kong Huan Xiang (Nanjing, NJ016)
  Taito Basketball, Ultimate Basketball
  Taito Chase H.Q.
  Taito Grand Prix - Eikou heno License
  Taiyou no Shinden - Asteka 2, Tombs and Treasure
  Taiwan Mahjoing II
  Takeda Shingen
  Takeshi no Sengoku Fuuunji
  Tantei Jinguuji Saburou - Toki no Sugiyuku Mama ni
  Tasac
  Tashiro Masashi no Princess ga Ippai
  Tatakae!! Rahmen Man - Sakuretsu Choujin 102 Gei
  Tecmo Bowl
  Tecmo Super Bowl
  Tecmo World Cup Soccer
  Teenage Mutant Ninja Turtles II - The Arcade Game, Teenage Mutant Hero Turtles II - The Arcade Game, Teenage Mutant Ninja Turtles (Japan)
  Teenage Mutant Ninja Turtles - Tournament Fighters
  Tekken 2
  Terminator, The
  Tetrastar - The Fighter
  Tetris (Nintendo)
  Tetris (Tengen)
  Tetsudou Ou - Famicom Boardgame
  Thexder
  Thomas the Tank Engine and Friends (Prototype)
  Thunder Warrior (Micro Genius)
  Thunderbirds
  Thunderbolt 2 - Fighting Plane (Game Tech, Open Corp.)
  Thundercade
  Time Diver Eon Man (Prototype), Time Diver Avenger (Nitra)
  Time Zone
  Tiny Toon Adventures
  Tiny Toon Adventures 6
  Tiny Toon Adventures Cartoon Workshop
  Titan
  TM Network - Live in Power Bowl
  Tokoro San no Mamoru mo Semeru mo
  Toobin'
  Top Rider
  Touch Down Fever
  Touhou Kenbun Roku
  Toukon Club
  Tokyo Pachi Slot Adventure
  Toy Story
  Tower of Druaga, The
  Toxic Crusaders
  Trolls on Treasure Island
  Tsuppari Wars
  Tsuri Kichi Sanpei - Blue Marlin Hen
  Tsuru Pika Hagemaru - Mezase! Tsuru Seko no Akashi
  TwinBee 3 - Poko Poko Dai Maou
  Uchuu Keibitai SDF
  Ugadayka (Chudov)
  Ultimate Mortal Kombat 3 (NT)
  Ultimate Mortal Kombat 4 (NT), Mortal Kombat 4 (NT)
  Ultimate Stuntman
  Ultraman Club 2 - Kaettekita Ultraman Club
  Universe Soldiers, The (GamTec)
  Untouchables, The
  Utsurun Desu
  Valkyrie no Bouken - Toki no Kagi Densetsu
  Vegas Connection - Casino Kara Ai wo Komete
  Vegas Dream, Viva! Las Vegas
  Venus Senki
  Volguard II
  Wagyan Land
  Wagyan Land 3
  Wai Wai World
  Wall Street Kid
  Wang Zi Fu Chou Ji (Henggedianzi)
  Wayne Gretzky Hockey
  Wayne's World
  Where in Time is Carmen Sandiego
  Where's Waldo
  Who Framed Roger Rabbit
  Willow
  World Boxing
  World Hero, Chinese Hero
  Wrecking Crew
  Wu Shi Hun, Samurai Spirits, Samurai Showdown III
  Xevious
  Xi Tian Qu Jing II (Journey to the West II)(Waixing)
  Xian Jian Qi Xia Zhuan (Nanjing)
  Xiao Au Jiang Wu (Nanjing)
  Xiao Ma Li, Bingo
  Youkai Douchuuki
  Youkai Club
  Yuefei (Mars, Union Bond G-006)
  Yu-Gi-Oh (Nanjing, NJ032)
  Zanac
  Zhen Ben Xi You Ji (Asder)
  Zhen Shi Hun - Wu Shi Dao Lie Zhuan (Nanjing, NJ033)
  Zhong Guo Xiang Qi, Qi Wang - Chinese Chess
  Zoids 2 - Zenebasu no Gyakushuu
  Zoids Mokushiroku
  Zombie Hunter
  Zunou Senkan Galg

Summary:
unique cheats-1128
total games-720

83-in-1 [p1][!], 100-in-1 (MG109) [p1][!]

(UNI) Test program:
Early "Unchained Melody" multigame carts surprisingly in addition to generic menu have an internal self test program, performing tests of CHR, PRG data, mirroring and banking support. Can be activated by pressing Select + Start at the game menu.
Source: tcrf.net

150-in-1 [p1][!], 200-in-1 - Elfland (Unl)[U][!]

(UNI) Test program:
Some pirate multigame carts surprisingly in addition to generic menu have an internal self test program, performing tests of CHR, PRG data, mirroring and banking support. Can be activated by pressing Select + Start at the game menu.

Super HIK 300-in-1 1994 [p1][!], 9999-in-1 [p1][!], 9999999-in-1 [p1], 10000000-in-1 [p1][!]

(UNI) Secret message:
A later "Unchained Melody" carts haven't internal self test routines, but they had hidden message with the revision number. Just at the menu screen hold Left + Start and press B. There are three different revisions in total: "1.0", "1.1" and "1.2". Multigame cart with 1997 games in one hasn't this menu at all.

Coolboy 198-in-1, Coolboy 400-in-1

Newer revisions type 1:

(UNI) Self test:
Hold A + B and press Reset to enter the ROM/RAM self test. Thire is no this test in older revisions, but in newer ones (type 2) it has replaced with other cheats too, while the test code still sitting in their ROMs.

Newer revisions type 2:

(UNI) Hidden games:
Hold one of the following combinations and press Reset to start instantly a specific game hidden inside the ROM:
A + Select-Undersea Arena
B + Select-Astyanax
Select + Start-Dr.Mario

100 Man $ Kid - Maboroshi no Teiou Hen, Casino Kid

US version:

(UNI) Secret passwords:
Instead "_" symbol you should use "FORWARD" option on the password entering screen. Secret passwords need to be enabled before the game. When you entering level and splash screen gives an advice to you, hold Start before pressing A to skip splash screen.
i_am_a_richman-Gives you $100000.
i_wanna_see_the_king-Final poker battle with the King (Elvis is alive! ;)). If you win you'll see ending sequence. Also enables the Debug mode, see below.
i_wanna_go_bankrupt-Takes you to the game over screen (strange cheat).
debug_monitor_switch_on-Debugging functions.
In addition to A + Start on controller 1, hold Left + A on controller 2 before skipping the splash screen.
To switch to in game debugging monitor hold Left + A on controller 2 then press Start on controller 1,
"MONITOR VERSION 1.00 PRESENT BY HIRO" screen appears. You will be able to view game events, play music and sounds.

Japanese version:

(UNI) Secret warps:
At the casino in any level during the game, a special warp places exists. If you stand on it, then hold Left + A on controller 2, and finally press A on controller 1, you'll be warped to another level.
Lasvegas, warp to Japan-In the bottom-right corner of the casino, there is a two tables, stand from the left of the leftmost table and face to the south.
Japan, warp to New York-Go to the bottom-right corner of the casino, there is a two water pools, from the right of the upper one there is a small single weddin machine. Stand just before it and face to the East.
New York, warp to Monaco-Go to the leftmost corner of the ship, stand before the leftmost light spot, face to the West.
Monaco, warp to Lasvegas-Go to the top-right corner of the casino, find a roulette table, there is a small path from the left of it, walk it up to the wall and face North.

(UNI) Secret message:
During the game, hold Left + A on controller 2, then press Select.

(UNI) Secret words:
Enter one of following words as player name, select "おわり" option hold Start and hold A on controller 1.
おかねもち-Gives you $100000.
うと゛いかに-Final poker battle. If you win you'll see ending sequence. Also enables the Debug mode, see below.
しんて゛い-Takes you to the game over screen (strange cheat).
もにたおん-Debug mode.
In addition to A + Start on controller 1, hold Left + A on controller 2 before skipping the splash screen.
To switch to the debugging monitor hold Left + A on controller 2 then press Start on controller 1,
"MONITOR VERSION 1.00 PRESENT BY HIRO" screen appears. You will be able to view game events, play music and sounds.

Taiwan Mahjong 16, Tai Wan Ma Que 16

(UNI) Secret message 1:
At the title screen, press Up, A, Left, B, Down, B, Right, A, B, B, A on controller 1.

(UNI) Secret message 2:
During the game, during player's turn, press Up, Down, B, B, Left, Right, A, A, Up, Down, Left, Right, A, B on controller 2.

(UNI) Secret message 3:
During the game, during player's turn, press Right, A, B, A, Down, B, A, B, Up, A, A, B, Left, B, B, A on controller 2.

(UNI) Secret message 4:
During the game, hold Up + Select on controller 1 before the player's turn. Repeat this for at least 10 turns. Last three messages are the same andthey are full version of the title screen message. All four message strings are simple encoded with XOR function, each string uses different XOR encoding value, so you couldn't see them in RAW hex or ASCII dump.

1943

(UNI) Auto-fire:
This cheat can be enabled with the Famicom 4-Player Adaptor (4-Score Adaptor for the NES system can't be used, it's incompatible). Hold B on controller 4, then press Reset. Now if you hold B on controller 1, your ship will fire always. So this cheat isn't much useful on any controller with auto-fire buttons, but very useful on Famicom system with the original controllers.

(UNI) Password generator:
Game Level:
Offensive Power:
Defensive Power:
Energy Level:
Special Weapon:
SW Time Limit:
Pts available:
Alt Password:
Password:


1999 - Hore Mitakotoka! Seikimatsu

(UNI) Sound test:
Start a new game, generate your character, and while three other characters are generating, hold A + B + Select + Start. When screen with current year is displayed, a string "さうんと えふく きょく" will appear at the screen bottom. Use D-Pad buttons to select music or sound, play it with A or B accordingly.

3D Block

(UNI) Level select:
At the title screen, press A, B, Up, Down on controller 1 then press A to increase level number. By default you can select only first 10 levels. With this cheat, you can select any level up to 20.

(UNI) Game ending:
At the title screen, press A, B, Up, Down on controller 1 then press Select 10 times. The girl's silhouette will change the color and show actual nude picture. This is what appears if you beat the game.

720

(UNI) Class select:
At the title screen, set cursor to the "CONTINUE" option and press Left + A + Select + Start on controller 2. A small number will appear left to the menu, displaying the current class level. Each time you press the button code, number is increasing from 1 to 4. Now continue the game to play with selected class.

8 Eyes

Japanese version:

(UNI) Password generator:
Random:
Cleared:Arabia
Italia
India
Egypt
Germany
Spain
Africa
Hints:Between Black and White are five jewels
Between Black and White, there is no Yellow
Near Red there is no Orange, Yellow is on the far Left
Near White and Yellow there is no Purple
White is next to Yellow, Black is next to Red
Between Green and Purple are two jewels
Blue is next to Purple, Black is on the far Right
Level:
Password:


US version:

(UNI) Password generator:
Random:
Quest:
Cleared:Arabia
Italia
India
Egypt
Germany
Spain
Africa
Hints:Black is on the far right
White is next to Yellow
Black is next to Red
White, Orange, and purple are all separated
Between Black and White, there is no Yellow
Between Green and Purple are two jewels
Purple is next to Red
Level:
Password:


AV Jiu Ji Ma Jiang 2

(UNI) Slideshow:
At the title screen, after "START" message appears press Up, Up, Left, Left, Down, Down, Right, Right.

(UNI) Extra 900 game points:
At the title screen, after "START" message appears press Up, Up, Left, Left, Down, Down, Right then press Up + Right. A sound will confirm correct code entry.

AV Mahjongg

(UNI) Slideshow:
Press Left, Left, Right, Right, B, A at the title screen.

(UNI) Easy play:
Press Up, Up, Down, Down, B, A, Start at the title screen. When you will be starting any Mahjong game, you'll be able to choose any option before game.

AV Hanafuda Club

(UNI) Easy play and instant win:
During the game, press Start, Select, Start, Select, B, Start, B, Select, B, B. Press B to choose the card to toss. Press Start to instant win.

AV Pachi-Slot, Hot Slot

(UNI) Disable payout:
During the game, when you win something, the machine will payout the prize immediately. You can keep your prize inside the machine as a credit. To do that, before inserting the coins, press Start and immediately press B once (don't hold it) on controller 1, this will not only show you the money you won, but disable the payout for the next winning. You need to do this trick every time after win to keep all your prize as a credit.

(UNI) Slideshow:
During the game, before instering coins, press Left, Left, Right, Left, a nude pictures will appear, press Start or A to advance to the next picture.

AV Pretty Girl Fighting, AV Mei Shao Nv Zhan Shi

(UNI) Slideshow:
Press Up, Up, Left, Right, Down, Down, Up, Down at the title screen. You will see all nude pictures.

AV Soccer, Ultimate League Soccer, Fuetball

(UNI) Slideshow or ending sequence:
At the title screen, press Start once, then during ball animation, but before the team setup appears, quickly press Select, B, Up, A, Down, B, Left, A, Right. For the AV version this will enable the slide show with all nude pictures. For the regular version, this will show the ending sequence.

Aa Yakyuu Jinsei Icchokusen

(UNI) Secret words:
Enter as player name:
さうんと-Sound test

Abadox

(UNI) Maximum powerups:
At the license screen (for the US version) or at the title screen (for the Japanese version), press Up, Down, Right, Right, Up, Left, Right, Down, Left, Up, Start. During the game, press Start, Start to get a maximum powerups.

Abarenbou Tengu, Zombie Nation

(UNI) CRC test:
Hold Up + Left + A + B on controller 2 and press Reset.

(UNI) Special round select:
Power on console then press Reset 25 times, at the title screen now press Up, Up, Down, Down, Left, Right, Left, Right, then press Start. You can select any stage or boss to start with, see the ending or enable stage scroll test from menu. Additionally, put cursor at the "EDIT MODE" option, hold A + B and press Start to enable CHR viewer instead of stage scroll test.

(UNI) Invulnerability:
Power on the console then press Reset 77 times, then use "Restore energy" cheat to obtain invulnerability instead.

Aces - Iron Eagle 3, Ultimate Air Combat

(UNI) Secret passwords:
S3CR3T-Ultimate cheat screen.

Action in New York, Final Mission, SCAT - Special Cybernetic Attack Team

Japanese version:

(UNI) Level select and more:
At the title screen, hold A + B on controller 2 and then press on controller 1:
A + Start-Level 2
B + Start-Level 3
Right + Start-Level 4
Left + Start-Level 5
Up + Start-Ending sequence
Select + Start-Extra 10 lives

US version:

(UNI) Extra 12 lives:
At the title screen, hold Up + A + B on controller 2 and then press Start on controller 1.

European version:

(UNI) Level select and more:
At the title screen, press A, B, Right, Left, A, B, Up, Down, Select on controller 1 to enable cheats. Then press on controller 1:
A + Start-Level 2
B + Start-Level 3
Right + Start-Level 4
Left + Start-Level 5
Up + Start-Extra 12 lives

Addams Family, The

(UNI) Infinite lives:
Press A, B, B, A, Left, Right, Left, Right at the title screen, "c" letter appears in upper left screen corner.
Thanks to Kitsune for corrections.

Addams Family, The - Pugsley's Scavenger Hunt

All versions:

(UNI) Password generator:
Lives:
Random:
Hearts:
Saved:Wednesday
Granny
Uncle Fester
Gomez
Password:


Advanced Dungeons & Dragons - Dragon Strike

(UNI) Sound test:
At the first title screen press Up, Down, Left, Right.

(UNI) Japanese version:
At the copyrights screen press Up, Right, Down, Left, Up, Up, Down, Down, Up, Down, Left, Right. Game will reset. From this point all messages will be in Japanese.

Adventures of Lolo (US)

(UNI) Password generator:
Level:
Password:


Adventures of Lolo 2 (US), Adventures of Lolo (Japan)

(UNI) Password generator:
Level:
Password:


After Burner, After Burner II

All versions:

(UNI) Hardest mode:
At the title screen, hold Right + A + B + Select on controller 1 and Left + A on controller 2 at the same time, then press Start on controller 1.

(UNI) Removed cheat:
Just before the game over screen appears, when explosion animation is on the screen, rapidly press A on controller 2. The game will hang before you press A on controller 2 again. It seems that the real functionality was removed.

US version:

(UNI) Extra missiles:
At the beginning of the stage 5, while refueling / reloading weapons on the ground, press Up + Right on controller 2 and A + Start on controller 1 at the same time and hold it during the take off. You'll get extra 40 missiles. This cheat was meant to be available at the end of refueling sequences at the stages 3, 5, 11, 16 and 21 with variety of extra missiles (20 or 40) and different button codes for each level, but in the final release there were an additional check added, so this cheat is available only on stage 5, and the button codes for all levels present in the unused array are the same. The Japanese version of that game have similar code without level restriction and button code uses just controller 2.

(UNI) Stage select:
During the game, press Select to pause it, then press Down + Left + A on controller 2 and Down + Left on controller 1 at the same time. Press Up or Down to select stage, press Select to play. This cheat can be done in all levels except 8 and 17. But you can still get to these stages with this cheat from any other stages. This cheat was completely removed from the Japanese version.

(UNI) Background test:
Hold Left + B on controller 1 and A on controller 2 at the same time before the title screen appears (at the console power up / reset or after the game over screen). Press Left or Right on controller 1 to change the menu options. Press Up or Down to select the menu option. Hold Select to hide menu. This cheat was completely removed from the Japanese version.

Japanese version:

(UNI) Sound test:
At the title screen, hold A, then press Start.

(UNI) Continue:
After the game over screen, when you returned to the title screen, press B, B, B, B, B, B, B, A, A, A, A, A, A, A, Up, Up, Up, Up, Up, Up, Start. You will continue at the previously played level. If you press additionally to the mentioned button code Up at the title screen, before hitting Start, and the last played game was ended less than on the third level of difficulty, then you'll hear a confirming sound. It means that continue cheat will work. This confirming sound still sitting in the US version but since the Continue button code was shortened just to 8 symbols, the confirming of the 20-buttons code isn't much helpful. ;)

(UNI) Credits:
Power the console on, wait for the 6 demo sequences has played, then press A, A, A, A, B, Up, Up, Down, Down, Down, Down, Down, Down, Start. The staff credits from the ending sequence will start. This cheat was removed from the US version, but some portions of code are still there. Fortunately, the ending sequence in the US version haven't any credits and just doesn't wort watching at all. ;)

(UNI) Extra missiles:
At the beginning of the stages 3, 5, 11, 16 and 21, while refueling / reloading weapons on the ground, hold on controller 2 the corresponding button code from the table below, and hold it during take off. You'll get extra amount of missiles depending on your current stage. Similar cheat is present in the US version, but available only on the stage 5, and the button code involves the controller 1 too.
Stage 3-Left-Extra 30 missiles
Stage 5-Left + B-Extra 50 missiles
Stage 11-Right-Extra 30 missiles
Stage 16-Right + B-Extra 50 missiles
Stage 21-Down-Extra 30 missiles

Ai Sensei no Oshiete - Watashi no Hoshi

(UNI) Sound test:
Hold A + B + Select on controller 1 then press Reset.

Airwolf (US)

(UNI) Skip to the last mission:
At the title screen, hold Up + B on controller 2 then press Start on controller 1.

(UNI) In-game pause:
During the game, press Select + Start on controller 1 to pause it. Press any button on controller 1 to unpause.

Akira

(UNI) Force quit:
During the game, any time while actions selection menu is displayed, press A on controller 2 to jump instantly to the quit menu screen, where you may either select to play the current scene from the beginning or get a password and quit.

Aladdin 3, Magic Carpet 1001

(UNI) Power up:
During the game, every time you press B + Select, the power counter cycles from 0 to 4. So you could be virtually invulnerable if you press these button often.

All-Pro Basketball, Zenbei!! Pro Basket

(UNI) Faster timer:
Hold Down + A on controller 2, then press Reset. Now, timer in game will be 2 times faster. Surprisingly, this cheat exactly the same as in Taito Basketball.

Alpha Mission, ASO - Armored Scrum Object

All versions:

(UNI) Continue:
At the game over screen quickly on controller 2 press A, B, Up, Down, B, A, Right, Left.

Argus

(UNI) Invulnerability:
At the title screen, hold Select on controller 2 then press Start on controller 1.

Arkanoid 2

(UNI) Continue:
At the title screen, press Down, B, Right, Left, A, A, Up, B.

(UNI) +50% Ball speed:
At the title screen, press Right, A, Down, B, Left, A, Up, B.

Artelius

(UNI) Debug mode:
Enter the "CONTINUE" menu, then press B, Right, Start, Right, Right, Select, Right, Left, Right, Right, Right, Left, Select, Left, Right, Select. Two-digit number will appears at the borrom-right corner of the screen. Press A to cycle from $00 to $1A, press B to return to continue menu. Numbers from $00 to $19 are level numbers, where you start when load any game. Number $1A will disable the background music.

Asterix

(UNI) Cheat menu:
During the game press Start to pause it. Then enter following code Up, Up, Up, Up, Up, Up, Up, Up, Down, Down, Down, Down, Left, Left, A, B, Right, Right, Right, Right, Right, Right, Right, Right, Left, Left, Left, Left, Up, Up, B, A. A sound will confirm correct code entry, then press Start and game will return to the title screen with extra "cheat" menu item.

(UNI) Invulnerability:
Input the Cheat menu code as described above, but before pressing Start to return to the main menu, hold Up + Right + A + B. Start a new game with any cheats as you wish and press Start to pause it again. Enter the Cheat menu code one more time. A sound will confirm correct code entry. Press Start to unpause the game. From this point you will be fully invulnerable.

Astro Fang - Super Machine

(UNI) Level select and infinite fuel:
At the title screen, press Up, Up, Down, Down, Up, Down, Down, A then press Start. As the stage map display screen press Select to select any stage. If you press B instead of A in this code, you will no longer care about fuel meter, you still can play even if it is empty.

Astyanax, Lord of King, The

(UNI) Ending sequence:
Enter the Demo select cheat. At the Demo select menu press B, B, A, A, B, A, Up, Down, Start. At the end of this ending sequence a Japanese credits will be displayed, for some reason didn't removed from the US version, which is normally didn't displayed during normal game.

Atlantis no Nazo

(UNI) Debug codes:
All codes should be entered at the title screen.
There is three internal counters for three buttons: Select on both controllers counts as the same value, A on controller 2, and B on controller 1. Each time you press one of these buttons, one of internal counters is increasing, regardless of it's order. When group of counters reaches the desired values, the final test performs for the pressed button combinations on both controllers. The program doesn't care which controller you use for the final combination, you can do any buttons on any controllers you wanted, only one condition must be performed: all desired buttons must be held when counters are reached desired values. Note, that when you press the final combination, internal counters continue to increasing, so if you press one of the "counted" buttons as part of the final combination after counters are reached desired values, your cheat won't trigger. So you must not use them in the final combination at all and use any other free buttons, or combine last counted pressing with final buttons held.
Thanks to Joe for corrections.
Skip current zone-Counters condition: Select on controller 2 or controller 1 - 33 times, A on controller 2 - 22 times. Final combination: A + B.
Infinite lives-Counter condition: A on controller 2 - 11 times, B on controller 1 - 22 times. Final combination: not needed.
Invincibility-Counter condition: B on controller 1 - 33 times. Final combination: Up + Down + A + B + Select.
Then press Start on controller 1 to start a new game.

Attack of the Killer Tomatoes

(UNI) Frame advance:
Press Start to pause game, then by pressing Select you can advance the game frame by frame.

(UNI) Secret message:
After you left last life and before tomatoes eyes animation and message "TRY AGAIN TOMATO FACE" will appear, hold Down + Left + A + B. Instead this message another one appears: "ROB LOVES SANDY". Rob Harris is a programmer of this game.

B-Wings

(UNI) Level and weapon select:
Before triggering one of these cheats you should enable the cheat mode. On controller 1 hold Up then press A, then release Up. Repeat this for Right, Down, Left accordingly, each time holding it, pressing A, then releasing. After this, hold one of the buttons below for according cheat mode then press B. A sound will confirm correct code entry.
Right-Enable stage select.
Press Up or Down to select level. Select "CONTINUE" menu item by pressing Select replaced by "STAGE N" menu item then press Start.
Down-Enable weapon select.
Pause game by pressing Start then by pressing Select choose any weapon.
Left-Enable stage select and weapon select at the same time.

Baby Boomer

(UNI) Level skip:
Any time during the game, hold Up + A on controller 1, then press B. This will enable the level skip cheat. Now, hold B then press Select on controller 1. Total 10 stages are available, after 10th, you will return back to the stage 1.

Bakushou! Star Monomane Shitennou

(UNI) Unknown:
Any time during the game press Up + Left + A + B on controller 1. Seems this causes a permanent luck for any player. Need to investigate.

(UNI) Unfinished game:
Before the title screen, hold Left + Right on controller 1 then press Start. Start a new game, but instead of begin gameplay, you will continue some unfinished long-played game. Need to investigate.

(UNI) Mini-game mode:
Hold Up + Left + A + B on controller 1 and press Reset. Instead of generic game demo loop, you'll see all playable characters in sequence, then will play all mini-games in row until you loose, then return back to the normal game mode. Need to investigate.

(UNI) Slow down the dice roll:
During the game, on the second part of the turn, when the letter dice is rolling, hold Left + Right on controller 1 to slow down it, and you can easily select desired dive values.

Bakushou!! Jinsei Gekijou 2

(UNI) Expanded mapper regs check:
Hold Up + Down + Left + Right on controller 2, then press Reset. Press A on controller 1 to start a mapper test. If fail (most emulators), the "NG" will be displayed on the red background and game will go to the infinite loop. In other case, the "OK" message will be displayed on the green back for the short time then game will return to the title screen.

(UNI) Sound test:
At the title screen, press Up, Down, Up, Down, A, B, Right, Left, Right, Left, Select, Select, A, B, Select, Select, Up, Right, Down, Left, a small number will appear at the bottom-right screen corner. Use Up or Down to change number from 0 to 255, press A to play music (0-31), press B to play sound effects (0-36), press A when number is 255 to enable the microphone test. The rest of the numbers are lead to the program crash.

Banana

(UNI) Stage select:
Start a new game, make three steps down from the starting point, hold A + B on controller 2 then press Reset.
Start a new game again, press A + B on controller 1 to die once, after continue make three steps down from the starting point, hold A + B on controller 2 then press Reset.
Start a new game for the third time, press A + B on controller 1 two times to die twice, after continue make three steps down from the starting point, hold A + B on controller 2 then press Reset.
Finally, start a new game for the fourth time, press A + B on controller 1 two times to die twice, after continue make three steps down from the starting point, press A + B on controller 1 to die for the third time, at the game over screen hold A + B on controller 2.
The game will return to the title screen automatically without a reset. If all done right, the title menus and text color will change from orange to magenta (or blue, if combined with the cheat below).
Now you'll be able to increase or decrease the level counter by 1 instead of 5, just hold A + B on controller 2 and press Left or Right on controller 1.
Additionally you can instantly win the current level by pressing Up on controller 2 during the game, or return back to the previous level by pressing Down on controller 2 during the game. Returning back from the first level will lead you to the stage 0, which is actually an ending.

(UNI) Full items, Extra 8 lives:
At the title screen, select the level 101 and start a new game. Press A + B on controller 1 two times to die twice, then press Reset.
At the title screen, select the level 101 and start a new game one more time. Press A + B on controller 1 three times to die three times, then press any button to return back to the title screen automatically.
If done right, the title screen menu text will change from orange to pink (or blue if combined with the cheat above).
Now you can start a new game with maximum 8 lives, and 255 of bombs, ladders, ropes and stones if hold A + B on controller 2 before the game start.
Additionally, before pressing A + B on controller 1 to die, hold A or B on controller 2 to disable lives decreasing.
When using this cheat, when the game is over, your scores will be erased.
This code additionally will return you back to the title screen after completing the last 105th level instead of showing the ending sequence. To view the ending sequence, at the stage 105 complete screen hold Up on controller 2.
Even more secrets are available! You could PLAY the demo stage either. Before the demo sequence start, at the title screen, hold A + B on controller 1 and controller 2 controllers at the same time.

Banana Prince, Bananan Ouji no Daibouken

(UNI) Debug menu:
Hold Left + A + Select + Start on controller 1 then press Reset.

(UNI) Password generator:
Level:
Shields:
Weapon:
Password:
Note:0 - full banan
1 - half refined banan
2 - full refined banan
3 - banana peel


Barbie

(UNI) Secret message:
Hold Select, then press Reset, continue holding Select at the initial copyright screen and press quickly A, B, Up, Down, Left, Right, A, B. You must hurry, because this code can be entered only first five second during copyright screen show up. Upper copyright strings will change to "CHRISTINE, ROBERT, SCOTT, VICTOR, JEFFERY WESTEFELD" strings. Release all button and press A + B on controller 1 to return all normal copyrights back.

Bard's Tale II, The - The Destiny Knight

(UNI) Secret words:
Enter one of this words as a player name while creating a new character.
もんすたーもにた-Monster Monitor. Shows you every monster in the game, the last one will stop the program.
えんかうんと-Encounters. The same as previous.
おんかくせれくと-Music Select. Use the D-Pad buttons to select music or sound effects, press A to play SE, music will be played automatically.
いちまいえもにた-Picture Monitor. Shows you every single picture of the place or person in the game.

Baseball Star - Mezase Sankanou!!, Baseball Stars

Japanese version:

(UNI) Super team:
Select the "チームつくり" option from the main menu. Then press Down, Right, Left, Down, Down, Right. Doesn't matter what team strength you are select after that, so just let it be at the "バラバラ" option by default. Press A to enter the team name edit screen. A team name "すとくいんの しものくは" will be displayed. Change it to "われてもすえに あわむとぞおもふ", then select "おわり" and now enter a real team name. Complete the team making procedure. Now, team you've created has a lot more power than any other teams.

(UNI) Women's team:
Select the "チームつくり" option from the main menu. Now, move the cursor to the "Veterans" strength option, then select any other option. Repeat selecting and deselecting the "Veterans" three more times, so this should be a 4 times in total you've selected this option. You can now select any other than "Veterans" strenght to your new team, just don't select the "Veterans" option anymore. Press A to enter the team name edit screen. A team name "おののこまちの しものくは" will be displayed. Change it to "わがみよにふる ながめせしまに", then select "おわり" and now enter a real team name. Complete the team making procedure. Now, team you've created will be consists of woman instead of men.

(UNI) Super women's team:
Combining two cheats above will give you the Super women's team after all. First you need to enter the Super team cheat sequence. Note, that while you doing this, you've selected the "Veterans" team once already. When done, do the same procedure as in the second cheat of selecting deselecting the "Veterans" option 3 more times. Press A to enter the team name edit screen. First you'll be asked "おののこまちの しものくは", write the correct answer, select "おわり", then you'll be asked "すとくいんの しものくは" write correct answer one more time, then you'll be finally asked about the real team name. When you complete the team making, you'll obtain a Women's team with maxed out parameters.

Bases Loaded 3, Moe Pro! '90 - Kandou Hen

(UNI) Unknown:
Hold A + B then press Reset. The meaning isn't clear. The cheat flag used for select from two different data sets and two code handlers while moving on the field and bating.

Batman Returns

(UNI) Repeat ending sequence:
After the ending sequence is over and copyright message appears, press Left + A + B on controller 2.

(UNI) Extra batarangs:
During some cutscenes between levels, hold Start on controller 1 and A + B on controller 2 at the same time and press Select on controller 1 to skip the cutscene or just wait to cutscene is over. If done right, you'll start a new stage with 10 batarangs instead of 5. This cheat isn't working at the intro cutscene before stage 1-1. Also, you can use this cheat at the cutscene before stage 4-1, but there are no batarangs used in a car driving sequence, so this will help only in the next regular fighting stage.

(UNI) Password generator:
Some notes about the password system and the game itself:
1. Stage 6-1 doesn't generate any passwords normally during the game, because there is no fatal events on it, you just can't die there. But you still able to get to this stage with the custom generated password.
2. The "Damage taken" counter is what you've got every time you get a hit from enemy or die. Regular hits add 8 times of the hit power value to this counter, the game over add 1024 instantly. The amount of continues you may use is unlimited, but the more you die or get hits, the bigger the damage counter. There are two main effects depends on it:
 a) the amount of HP you got refilled after continue; calculated as 0x28+(damage/128), but not much than your current HP capacity
 b) the different endings; less damage counter, more detailed the ending
 There are total 4 ending variants. Two are the good ones, two are the bad.
  1. The damage counter above 14848: only the staff roll with the stage 1-2 boss easter and the final message "YOU TOOK TOO MUCH TIME TO GET HERE. TRY GETTING HERE SOONER."
  2. The damage counter between 14848 and 9984: additional bat signal screen before the staff, the same stage 1-2 easter and the message "YOUR SKILL HAS IMPROVED, BUT YOU'RE NOT A REAL HERO YET."
  3. The damage counter between 9984 and 5376: the full demo sequence with the scene of the Penguin death, following the bat signal and staff roll with stage 2-3 boss Catwoman easter instead, and the message is "CONGRATULATIONS! BATMAN,YOU'VE SAVED GOTHAM CITY."
  4. The damage counter less than 5376: additionally a Catwoman picture appears on the bat signal screen, and the final message is "AWESOME! YOU ARE THE HERO OF ALL HEROES."
3. The "Game start" flag is used to determine if you access the password menu after the game over screen or you just powered up the console. Depends on it will or not clear some game variables. This prevents the game parameters and flags from erasing between game plays, and even if you choose "END" at the game overs screen, you can always go to the password menu and enter the default generated passwords (which is the same as on the game over screen) and continue the game. However, this flag is set to 1 ALWAYS when you start a new game or continue one way or another, it's is only has value 0 before the first game play after the reset. So technically, every password generated by the game after the game is started has this flag set, and only 4 random default passwords generated after the game reset, has this flag clear. When you generate any valid password, doesn't matter if you set this bit or not.
4. The "Test tube" flag is a special item, not displayed on HUD, but you can obtain it on stage 2-2 inside the cat's eye on the background after beating two trident armed enemies. Used automatically on the stage 2-3 boss Catwoman, cuts its HP by half.
5. The "Conversation" flag is set when you record the Penguins conversation in one of the rooms of the stage 3-1. This will change the level layout and allows you to complete it. You can't avoid setting this flag during the normal game, generated passwords with this flag set lead to the second part of the stage.
6. Also there is a special anti-pirate flag, if set, it makes any valid passwords not working. Here this flag is forced to be disabled for obvious reason.
7. There are two special debug flags, that can't be set during the game, and may be only generated. The invulnerability flag disables the HP decreasing. The Level Select flag is another debug leftover, allows you any time during the game, except the cutscenes, change current stage up to stage 4-2 instantly by pressing Left or Right on controller 2. The stages above 4-2 can't be accessed with this cheat.
8. "Box in hand" and "Box filled" are represents the special HP storage item. First is for amount of this items in your posession (given to you instantly after the stage 1-2 boss, the rest are hidden at some places). The second is amount of filled ones with HP. Actual HP counter in this game is 8-bit in size, so can contain as much as 255 HP. Only 64 HP is displayed in the HP bar on HUD, this takes only 6 lower bits of the number. When calculating your HP, the game will check for amount of boxes in posession and fills the higher two bits of the HP depending on it. So normally during the game you can't get the HP counter more than 64+(box*64) value. However, game doesn't check this when you lose your HP and decreasing it as if it full 8-bit value, so with this password generator, you can set "Hitpoints" + "Box filled" vealues to maximum to get 255 HP ingame without posessing the boxes at all. Unfortunately, the HP will be dropped back to 64 after the first continue.
9. And finally, there are two unused bits in passwords, that can be used for unique passwords generation, but doesn't appears to have any effects during the game.
Level:Game start :
Random:Test tube:
Hitpoints:Conversation:
Damage taken:Invulnerability:
Box in hand:Level Select:
Box filled:Unused:
password:


Batsu & Terii

(UNI) Level select:
At the title screen, press Up, Down, Left, Right, Up, Down, Left, Right on controller 2 then select desired level (only worlds 1, 2, 5, 6 are available) by pressing B on controller 2 corresponding number of times, then start the game:
1 time-World 1, Level 2
2 times-World 1, Level 3
3 times-World 1, Level 4
4 times-World 2, Level 1
5 times-World 2, Level 2
6 times-World 2, Level 3
7 times-World 2, Level 4
16 times-World 5, Level 1
17 times-World 5, Level 2
18 times-World 5, Level 3
19 times-World 5, Level 4
20 times-World 6, Level 1
21 times-World 6, Level 2
22 times-World 6, Level 3
23 times-World 6, Level 4

(UNI) Extra 5 health:
At the title screen, press Left, Left, Left, Left, Right, Right, Right, Right, Left, Left, Left, Left, Right, Right, Right, Right on controller 2 then start the game.

(UNI) Extra weapon:
At the title screen, press A, Up, B, Up, A, Down, B, Down, A, Left, B, Left, A, Right, B, Right on controller 2 then start the game.

(UNI) Extra 99 hearts:
At the title screen, press Up, Up, Up, Up, Right, Right, Right, Right, Left, Left, Left, Left, Down, Down, Down, Down on controller 2 then start the game.

(UNI) Extra 30 seconds:
At the title screen, press A, Up, Left, Left, B, A, Right, Down, Right, Left, Right, Up, A, Down, A, Up on controller 2 then start the game.

(UNI) Extra 99 lives:
At the title screen, press A, A, B, A, B, B, A, B, B, B, B, B, A + B, A + B, A + B, A + B on controller 2 then start the game.

Battle Baseball

(UNI) Sound test:
Hold Up + A + B + Start when "Banpresto" logo appears.

Battle City

Console version:

(UNI) Secret message:
At the title screen, select "construction" menu item then press Start on controller 1 to enter this mode and again Start to return back to the title screen. Repeat this 7 times. After that hold Down on controller 1 and press A on controller 2 8 times. Finally, hold Right on controller 1 then press B on controller 2 12 times. Press Start on controller 1. Message "THIS PROGRAM WAS WRITTEN BY OPEN-REACH WHO LOVES NORIKO" appears.

Arcade version:

(UNI) Stage select:
Insert credit then hold A + B on controller 2 and press Start on controller 1. You must choose desired level in 10 seconds.

Battle Formula, Super Spy Hunter

(UNI) Anti continue:
Normally, continues in this game are unlimited. For some unknown reason, you can limit it with maximum 80 continues. Just before the title screen is show up (during the game boot or after selecting the "END" option at the game over screen), hold Start. Start a new game, and after exactly 80 continues you'll be returned back to the title screen immediately after the game over screen.

Battle Stadium - Senbatsu Pro Yakyuu

(UNI) Debug mode:
At the main game menu, select the bottom-right ("power off") option, when "oyasumi..." ("good night") message appears on the screen, press Up, Up, Down, Down, Right, Left, Right, Left, A, B, Start.

(UNI) Second player time out:
Usually, during the game the second player couldn't pause it and change the game settings, just like it can be done by the first player. To enable the ability to the second player to pause the game, on controller 1 hold A + B, then press Reset. Now during the game, if the second player will shout to the internal microphone on controller 2 for a one or two seconds constantly, the pause will be triggered.

Battle Storm

(UNI) Ending sequence:
At the title screen, press Up, Left, Down, Right, A, B.

(UNI) Sound test:
At the title screen, press Up + Left + B + Select.

(UNI) Super challenge 1:
Enter the Sound Test mode. Point the cursor to the music called "THE CHALLENGE" and press Right + Select + Start.

(UNI) Super challenge 2:
Enter the Sound Test mode. Point the cursor to the music called "THE CHALLENGE" and press Left + Select + Start.

(UNI) CPU vs CPU:
During the game, press Start to pause it. Press Down + Left + B + Select. Select with Up or Down the player control mode "COMPT" to give the control of your side to the computer, now two computerw sill fight each other. Select "HUMAN" to return the controls to the human back again. This cheat can't be done in two player mode and the Challenge battles mentioned above.

Battleship

(UNI) Secret passwords:
0914-Unlimited weapons
0528-Shows enemy grid after the player's grid when push Start

(UNI) Sound test:
At the title screen, press Select on controller 2 to cycle the background music from the whole game.

Battletoads & Double Dragon - The Ultimate Team

(UNI) Warp zone Extra 5 Lives:
Press B, A, Down, B, Up, Down ot the player selection screen. A sound will confirm correct code entry. Press Start to enter Level selection menu up to 5-2 level and you'll start with extra 5 lives.

Be-Bop-Highschool - Koukousei Gokuraku Densetsu

(UNI) Ending easter:
Beat the game for the Good ending (under 8 days as Nakama Tooru or under 9 days as Katou Hiroshi). While the very first exclamation line before the Staff roll ("んがっ") displayed on the screen, quickly press A, B, Down, Up, Down, Up. At the "終" ("The End") screen, the main character instead of still smiling face will show you a grin with a fig.

Bee 52

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Best Keiba - Derby Stallion

(UNI) Horse stats:
During the game, in the stables, select any horse from the left part of the field, then on the info screen hold Right + B on controller 2 and press A on controller 1 to see all numerical parameters of the selected horse.

(UNI) Ending sequence:
At the title screen, while demo race is in progress, hold Up + B on controller 2 and wait for the end of the race.

Best Play Pro Yakyuu

(UNI) Debug menu:
Choose first option at the main game menu ("リーグデータ" or "league data") then select 2nd team name, press A, then edit it to そのべ and return to main menu by pressing B twice. Press Select, Right, Left and menu will appear. You can listen game music and view ending and other sequences.

(UNI) SRAM clear:
Before the powering the console on, hold A + Select.

(UNI) Autoplay mode:
Start a new game with two CPU controlled players. At the team presentation screen press A + Select. The message "AUTOPLAY" will appear. This will change some internal CPU behaviour, while playing agains each other. Need investigate.

Best Play Pro Yakyuu '90

(UNI) Debug menu:
Choose first option at the main menu ("リーグデータ" or "league data") then select 2nd team name and edit it to the そのべ (to enter edit mode, press A at the team name, then move cursor Up and again press A, edit name, press B to exit edit mode), return by pressing B to main menu and choose second option at the main menu ("日程表" or "にっていひょう" or "shedule"), move cursor down 13 times to set blue bar to the next to last position. Then return to main menu again and press Start at the currently selected menu option. You'll be able to hear the music, view ending and other sequences and edit custom sounds with sound editor.

Best Play Pro Yakyuu Special

(UNI) Debug menu:
Choose first option at the main game menu ("リーグデータ" or "league data"), select any league then select 2nd team name and edit it to そのべ (to enter edit mode, press A at the team name, then move cursor Up and again press A, edit name, press B to exit edit mode), return by pressing B to main menu and choose second option at the main menu ("日程表" or "にっていひょう" or "shedule"), move cursor down 12 times to set blue bar to the next to last position. Then return to main menu again and press Select at the currently selected menu option. You'll be able to hear the music, view some winning sequences and edit custom sounds with sound editor.

Best Play Pro Yakyuu II

(UNI) Debug menu:
Choose first option at the main game menu ("リーグデータ" or "league data") then select 2nd team name and edit it to そのべ (to enter edit mode, press A at the team name, then move cursor Up and again press A, edit name, press B to exit edit mode). After that, select 5th team name and change it to すだぴん the same way. Return to the main menu, point cursor to second option at the main menu ("日程表" or "にっていひょう" or "shedule") and press Start. You'll be able to hear the music, view ending and other sequences and edit custom sounds with sound editor.

Best of the Best - Championship Karate

(UNI) Secret words:
Enter one of following words as first player name. Note: there is two spaces before and three spaces after words in name.
"  LAYER   "-Your opponent health level down from 255 to 10.
"  OLRAC   "-Secret copyright message: "Conversion on NES by Movie Software (Perconti Carlo) Fax number: 33 1 60084528".

Big Nose Freaks Out

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Big Nose the Caveman

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

(UNI) Hidden credits:
At the Codemasters logo hold A + B + Select + Start before the title screen appears. Instead you'll see a hidden credits.

Bill Elliott's NASCAR Challenge

(UNI) Easter egg:
During the game demo sequence, when DSI logo and credits are displaying, hold Up and wait about 10 seconds, then while still holding Up press A, B, Start, Select, Select, Start, B, A. A screen with the DSI developer's photos will be displayed.

(UNI) Skip cutscene:
A "Drivers, start your engines!" cutscene may be skipped by pressing Up + A + B at the same time.

Bio Hazard

(UNI) Earter egg:
During the game, press Up, Up, Down, Down, Left, Left, Right, Right, A. A message with the full company name ("Computer Technology Co., Ltd. Fuzhou Waixing") will appear.

Bionic Commando, Hitler no Fukkatsu - Top Secret

(UNI) All weapons:
In the Japanese version, go to the interrogation room in level 17 and beat the prisoner 255 times, so he gives to you all weapons from the game.
Source: tcrf.net

Black Bass 2, The, Black Bass USA, The

Japanese version:

(UNI) Secret words:
MIRUN-Attractive Bait Meter

Blodia Land - Puzzle Quest

(UNI) Stage and level skip:
Hold A + B on controller 1 and controller 2 at the same time then press Reset. Press B while in map mode to change the stage. Press Up or Down while on level to change the current level. Press A to play selected level.

Blues Brothers, The

(UNI) Level skip:
Any time in the game press on controller 2 Down + Left + A + B + Select + Start and the same time press Up + Right + A + B + Select + Start on controller 1. This will enable level skip feature. To skip level press A + B + Select + Start on any controllers, input from both controllers merges into one button combination.

Bokosuka Wars

(UNI) Higher level:
Hold Select + Start then press Reset. Immediately after reset, start shouting to the microphone until the title music starts. If done right, you can start a new game with some altered parameters of your character (K320), so you can fight without loose.

Bomberman II, Dynablaster

(UNI) Password generator:
Level:-
Bombs:
Blast range:
Random:
Password JP:
Password US:


Boogerman

(UNI) Debug feature:
Pause the game then press A + B to enable cheat mode, then press Up, Left, Down, Right, A, A, B, character will disappear and you will be able to scroll any place of level. To put character back, press Start.
Source: Yakovlev Victor

Break Time - The National Pool Tour

(UNI) Disable AI thinking:
This cheat only available in the "NINE BALL", "ROTATION" and "NATIONAL POOL TOUR" game modes. During the game, before the opponent starts thinking, hold Up + Select on controller 1 and Down + Left + A on controller 2 at the same time.

(UNI) Instant win:
Select the "NATIONAL POOL TOUR" game mode. Before the game starts, at the US map screen hold A + B + Select. The password screen will load instead of the game, mean you automatically beat this tour. Hold these buttons all the time until the ending sequence.

(UNI) Secret passwords:
SJNG-Sound test
FNDG-Ending
VRHK-Speech test

(UNI) Password generator:
Name:
Match:
Password:


Bucky O'Hare

All versions:

(UNI) Password generator:
Bucky:
Jenny:
Deadeye:
Blinky:
Willy:
Toad's Ship:
Random:
Password:

Thanks to Awl for corrections.

Bugs Bunny Crazy Castle, The, Bugs Bunny Fun House

(UNI) Password generator:
Level:
Password:
Note: levels 61, 62, 63, 64 are Special.


Buzz and Waldog (USA), Ko Ko Eo Deu Ben Ce (Korea)

(UNI) Rest screen:
Every 50 minutes of the game play, no matter if you die or got the game over screen, the game will show the special screen with "REST" message on it. So it looks like this game wanted you not to play too much and rest. If you be patient and wait 5 minutes at this screen, you'll obtain one extra life and the counter will be reset and stopped. Press Start to exit back to the game and timer will restart again, so you can repeat the process and obtain up to 99 lives.

Cadillac

(UNI) Pre-defined card stack:
Enter the "Game Level Set" menu option, on controller 2 hold B, then press Up, Right, Right. The screen color will change from green to pink. Now start a new game, at the card shuffling screen, quickly press A on controller 2 before the cards start shuffling.

California Games

(UNI) Easter egg:
For any player, enter name as "PAUL" or "RACHEL". During "SKATE" competition, when this player is active, just before the end of the route, the flashing writing "PP & RME" will appeat on the ground. Initials stands for Paup Proctor and Rachel M. Edwards.

Captain Ed

(UNI) Invulnerability:
During BOSS fight in no-flight game mode, pause the game then press on controller 1 Up + A + B + Select. After the game is unpaused you will be invulnerable.

(UNI) Secret passwords:
こひあ-Invulnerability for all game modes.

(UNI) Secret words:
Enter as player name:
きんた-The BOSS rush mode.

Captain Saver, Power Blade 2

(UNI) Sound mode:
At the title screen, hold Left + A + B on controller 2, then press Start on controller 1.

Captain Skyhawk

(UNI) Star speed:
During docking sequence after the dog-fight levels, press A or B on controller 2 to accordingly decrease or increase speed of the background stars. Normally the game automatically set this speed at maximum only on the final boss fight.

Captain Tsubasa, Tecmo Cup - Soccer Game, Tecmo Cup - Football Game

(UNI) Password generator:
Bits:










Japan:
USA:
Note: "#" means "Jr."


Captain Tsubasa Vol. II - Super Striker

(UNI) Password generator:
Some notes:
1. There are 34 valid rounds in this game, but the password system allows up to 64 rounds, so all rounds between 35 and 66 will obviously glitch the game or hang it. You can try it by setting the corresponding checkbox.
2. The Jun Misugi's guts test starts from round 17. If its guts drops under 100 after the round is over (no matter if you win or loose) then in the next round it will have zero guts. This behaviour can be stored in the password as well.
3. There are much more characters in this game in 3 different teams than the password system can store. So, one player position in the password used to store level for a multiple characters, for three teams at once. Here is the table with the lists of characters in all teams for every player slot in password.
Player slot|Sao Paulo Team|Nankatsu Team|Japan Team
1|つばさ (Tsubasa)|うらべ (Urabe)|つばさ (Tsubasa)
2|レナート (Renato|なかやま (Nakayama), きしだ (Kishida)|たかすぎ (Takasugi), いざわ (Izawa), たき (Taki), きすぎ (Kisugi), もりさき (Morisaki)
3|リマ (Lima), マリーニ (Marini)|もりさき (Morisaki)|みさき (Misaki)
4|アマラウ (Amaral)|たかすぎ (Takasugi)|いしざき (Ishizaki)
5|ドトール (Doutor)|みさき (Misaki)|にった (Nitta), かずお (Kazuo), まさお (Masao), じとう (Jito), みすぎ (Misugi)
6|バチスタ (Batista)|いざわ (Izawa)|そうだ (Soda), さの (Sano), さわだ (Sawada), そりまち (Sorimachi)
7|タハマタ (Tahamata)|たき (Taki)|ひゅうが (Hyuga)
8|バビントン (Babinton)|いしざき (Ishizaki)|まつやま (Matsuyama)
9|ジウ (Gil)|にった (Nitta)|わかばやし (Wakabayashi)
10|プラトン (Plato)|きすぎ (Kisugi)|わかしまづ (Wakashimazu)

Random:
Round:Allow unsupported rounds
LevelsCurrent Exp
Slot 1:
Slot 2:
Slot 3:
Slot 4:
Slot 5:
Slot 6:
Slot 7:
Slot 8:
Slot 9:
Slot 10:
Extra:Unlock Cyclone Shoot
Unlock Drive Overhead Shoot
Misugi guts lower than 100
Password:

Thanks to Gennadiy_Master for info.

Castelian, Kyoro Chan Land

(UNI) Secret message:
At the game over screen, hold Up + A + Select, wait until the title screen is displaing, instead you'll see a secret message: "COPYRIGHT TRIFFIX 1991".

Castle Quest

(UNI) Secret words:
Enter one of these words as a player name in any game mode.
たろっと-Tarot - Tarot cards viewer
でも-Demo - Demo sequence viewer
くみんしーど-Kumin Seed - Ending sequence
もりきゅう-Wood 9 - Special round
よこがお-Profile - Character viewer
さしえ-Illustration - Picture viewer
とらんぷ-Playing cards - Playing cards viewer
もにたー-Monitor - Debug monitor
おおくほななこ-Ookubo Nanako - Easter representing the Ookubo's newborn daughter with some speech
なかしままさと-Nakasima Masato - Easter with small one-eyed girl, walking through the screen and shouting "MA!"

Castle of Deceit

(UNI) Level skip and invulnerability:
Any time during the game, except the title screen, hold Up on controller 2 and Up + A on controller 1 at the same time then press B on controller 1 to enable the level skip and invulnerability cheat. Now hold B and press Select on controller 1 to skip current level, hold A and press Select to enable invulnerability.

(UNI) Unlimited continues:
After the game over screen, hold A then press Start to continue from the last level you've played. It works only three times. Hold additionally Down on any controller before pressing A + Start every time you get a the game over screen and your continue will be unlimited.

Castle of Dragon, Dragon Unit

(UNI) Easter egg:
While walking through the corridor to the princess after beating the last boss of the game (the Red Dragon), hold Up + Left + A + B + Select + Start on controller 1. The princess, surprisingly, meets you topless. You can't see the topless princess in the Sprite Viewer of the Test Menu, though.

(UNI) Test mode:
At the title screen, press A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left. Test menu will appear. You will be able to select some game options, listen to music, view sprites and backgrounds. You can enter the game in test mode but cannot complete any level. To return back to the normal game, select "EXIT" option.

Castlevania II - Simon's Quest

(UNI) Password generator:
Exp. level:Days:
Whip:
Silk Bag:Cross:
Crystal:
Items:
Rib
Heart
Eye
Nail
Ring
Weapons:
Dagger
Silver Dagger
Gold Dagger
Holy Water
Diamond
Flame
Oakstake
Laurel:Garlic:
Random:
Password (NTSC):
Password (PAL):


Caveman Ninja, Joe & Mac

US version:

(UNI) Secret words:
Enter one of following words as player name for the hi-score table:
BUNNYEAST-Player name will change to "EXCELLENT", from now in game you will have infinite lives and can skip current level by pressing Select on controller 1.
DATABUNNY-Player name will change to "YO DUDES", from now in game you will have infinite lives. If you appears to enter hi-score table name again, any your name will be always "YO DUDES" after using this cheat.

European version:

(UNI) Secret words:
Enter as player name for the hi-score table:
NESRABBIT-Player name will change to "B BUNNY", from now in game you will have infinite lives. If you appears to enter hi-score table name again, any your name will be always "B BUNNY" after using that cheat.

Challenge of the Dragon (Color Dreams)

(UNI) Level skip:
Any time during the game, hold Up on controller 2 and Up + A on controller 1 at the same time then press B on controller 1 to enable the level skip cheat. Now hold B and press Select on controller 1 to skip current level.

Chess Academys

(UNI) Cheat mode:
At the title menu press A, A, Up, Down, Left, Right, Select, B, B, A, A. Sound will confirm correct code entry. From now all tiles of your opponents will be open and some other game features cheated to win easy.

Chester Field - Ankoku Shin heno Chousen

Beta version:

(UNI) Debug mode:
Any time during the game, press A + B on controller 2 to enable the debug mode. The game will hang and waiting for the commands, which changes some parameters in game.
Press Up or Down on controller 2 to enable or disable invincibility.
Press Up on controller 1 to enable the Mornig Star weapon.
Press Select on controller 1 to enable the Stage Select mode. A small number appears at the center of the screen. Press Left or Right on controller 1 to change it. Press Start to start with desired level.
Press A + B to continue the normal game with changed parameters.

Chiki Chiki Machine Mou Race, Wacky Races

US version:

(UNI) Double Jump:
Press Up, A, B, Right, Down, Left while in pause. From now you can perform double jump by pressing jump button twice.

Chiller

AGCI version:

(UNI) CRC test:
Hold Up + A + Select, then press Reset. Messages "NTSC PAL VERSION 21 SEPT 1990, NTSC MODE, PRG CHECKSUM 1681, MODS BY SCOTT SCHRYVER" will appear.

Chinese Odyssey, A, Da Hua Xi You

(UNI) Easter egg:
During the game, enter the menu by pressing Select then press Left + Select + Start on controller 1. A "MARS" logo will appear at the top-left corner of the screen.

Chip's Challenge (Prototype)

(UNI) Secret passwords:
cred-Credits screen
hard-Extra 13 Levels (no pass for them)
ybli-Ending screen
jhen-Extra Level 133 "CAKE WALK"
coza-Extra Level 134 "FORCE FIELD"
rgsk-Extra Level 135 "MIND BLOCK"
digw-Extra Level 136 "SPECIAL"

Chitei Senkuu Vazorudaa, Wurm

(UNI) Sound test:
At the title screen, hold Up + A + B on controller 2.

(UNI) Stage select and invulnerability:
At the title screen, hold Up + A + B on controller 1 and Down + A + B simultaneously on controller 2. Release buttons and by pressing B change level and press Select to switch to "TEST" mode for invulnerability.

Chou Hen, Galactic Crusader, Papillion

All versions:

(UNI) Level and weapon select:
At the title screen, press Down, B, Left, A, Up, A, B, Right, then press one of the following buttons:
Up-Level 2
Down-Level 3
Left-Level 4
Right-Level 5
Select, Right-Wave
Select, Left-Spiral
Select, Down-Trident

Kinema Music version:

(UNI) Slideshow:
At the title screen, press Down, B, Left, A, Up, A, B, Right, Select, A, B.

Chu Da D

(UNI) Easter egg:
Press Up, Down, A, B, Left, Right, B, A at the title screen. The title will change to the company emblem.

Chubby Cherub, Obake no Q Tarou - Wanwan Panic

Japanese version:

(UNI) Infinite lives:
To enable this cheat you must plug in the 4-Player adapter for Famicom (4-Score adapter for the NES isn't compatible), then at the title screen press Up + Down + Left + Right + A on controller 1. Start a new game, if done right, the Q-Tarou character picture on the stage info screen will change from standing to walking.

Chuugoku Janshi Story - Tonpuu

(UNI) Version display:
At the title screen, press Left, Left, Left, Left, Left, Left, B. The current known dump version is 1.05.

(UNI) Voice test:
At the title screen, press Left, Left, Left, Right, Right, Right, Right, Right, Right, Right, Right, Start.

Chuugoku Senseijutsu

(UNI) Sound test:
At the title screen, press Select 5 times then hold Up and press B. A "SOUND REQEST" screen will appear.

(UNI) Hidden gambling game:
During the game, when at the Slot Machine Oracle, run the machine, when all the rows are stopped, hold Up and press A a couple of time to skip the messages. After the last message is skipped, the Slot Machine Oracle will turn to the Gambling Machine. You'll have some credits and can place the bets and win some money. Hold Up and press B to return to the main game with money won.

Chuuka Taisen

(UNI) Cheat menu:
At the title screen, hold Up + Left + B on controller 1, then press Start. A sound will confirm correct code entry. Now release previously pressed buttons and enter button code Select, B, Left. A cheat menu will appear. You can select difficult level, number of player lives and toggle power selection mode. When power selection is "ON", during the game press Start to pause, then cycle through 6 power levels by pressing B on controller 1.

(UNI) Auto fire:
Start a new game, at the "READY!" screen press Down + B once. A sound will confirm correct code entry. Now you can hold A or B to fire automaticly. This cheat will be disabled after the game over screen.

City Adventure Touch - Mystery of Triangle

(UNI) Sound test:
Hold A + B on both controllers at the same time then press Reset.

Clash at Demonhead, Dengeki - Big Bang!

All versions:

(UNI) Instant death:
During the game, press Select to enter to the item select screen, press A + B at controller 2.

Japanese version:

(UNI) Secret passwords:
TENSAIWAWASURETA
KOTOWOOMOIDASUYO
-Full HP/MP and equipment.

US version:

(UNI) Secret passwords:
TENSAIWAWASURETA
KOTOWOOMOIDASU
-Full HP/MP and equipment.

Columbus - Ougon no Yoake

(UNI) Skip fight:
Select the "Load Game" option from the main menu, hold Up + B on controller 2 and B + Select on controller 1 at the same time, then press A on controller 1 to enter the selected option. Do not load any games, press B to return back to the title screen and start a new game. From now, you can finish any battle just by pressing Start on controller 1. This cheat will be saved also to your save slot and you won't need to enter it again, just load a previously saved game.

Commando, Senjou no Ookami

All versions:

(UNI) Secret message:
Finish the last level 4-4 with exactly 3 lives and 24 grenades and you will see secret message "ARIGATOU GOZAIMASHITA, 31ST JULY 1986 CAPCOM" .

Japanese version:

(UNI) Frame advance:
At the title screen, press B, Down, Up, A, Left, Left, Right on controller 2. In game press or hold Select to stop or move frame by frame enemies. In the US version this cheat was disabled.

Contra, Probotector, Contra 1993, Super Contra II

Japanese version:

(UNI) Stage select:
At the title screen, press Start, then hold Up + Left + A + Select before the title screen disappear.

Pirate version:

(UNI) Konami code:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A. Instead of 5 starting lives, you'll obtain just 2.
Source: Yakovlev Victor

(UNI) Stage select:
At the title screen, press Select, Left, Right, B, A.
Source: Yakovlev Victor

(UNI) Extra 11 lives:
At the title screen, press Up, Down, B, A, then start a new game.
Source: Yakovlev Victor

(UNI) Extra 30 lives:
At the title screen, press Up, B, Up, A, Up, Up, B, A, then start a new game.
Source: Yakovlev Victor

Cool World

(UNI) Unlock `Ocean Plaza` level:
Press A, B, B, A, Left, Right, Left, Right at the title screen, triangle appears in left upper screen corner.

Corvette ZR-1 Challenge, Race America

All versions:

(UNI) Racers info skip:
At the racer's name entry screen, press B + Select to jump right to the race info screen, instead of watching the racer's presentation.

(UNI) Higher speed and accelerate:
At the initial copyright screen, press every single button at the same time on any controllers to make a combination of Up + Down + Left + Right + A + B + Select + Start in total. You can press the opposite D-Pad directions on the different pads. For example press Up + Right + A + B + Select + Start on controller 1 and Down + Left on controller 2. A sound will confirm correct code entry. Instead of 192 mph, you'll reach the 201 mph and the faster acceleration.

(UNI) Secret words:
Enter one of the following words as a Player 1 name in the single player mode to change the name of your opponent to the secret one, mentioning developer's name, his relatives and Jesus itself.
PROTECTOR-Player 2 name will be "ALEX DEMEO"
VICTORIOUS-Player 2 name will be "VICKY DEMEO"
IN GODS IMAGE-Player 2 name will be "TIFFANY DEMEO"
FOLLOW CHRIST-Player 2 name will be "CHRISTOPER D"
LITTLE LAMB-Player 2 name will be "RACHEL DEMEO"
GREATEST TRUTH-Player 2 name will be "JESUS IS LORD"

European version:

(UNI) Scene skip:
In the European version an ability were added to skip more info and animation screens, not really needed for the game. Just press A + B at the the title screen, next few screens, after a rave start, etc.

Cosmic Epsilon

(UNI) Invulnerability:
At the title screen, press Up, A, Right, B, Down, A, Left, B, Up, Select. A sound will confirm correct code entry.

(UNI) Copyright message:
At the title screen, press Select, Up, B, Left, A, Down, B, Right, A, Up after entering success Invulnerability code. Message "1989 home data" will appear.

(UNI) Easter egg:
After beating the game, before the Staff names is displaing, hold Select on controller 1. A small pictures, represents the staff members will appear at the top-left corner of the screen for every name.

Cosmic Wars

(UNI) Ending sequence:
At the title screen, hold Up + Right + A + B + Select then press Start on controller 1.

(UNI) Extra 20 of every unit:
At the game mode selection screen, hold Down + B + Select, then press Start on controller 1, then start a new game. You and your opponent will obtain 20 pieces of every unit for free from start.

(UNI) Skip Animation Between Turns:
During the game, hold Up + Right + A + B on controller 1 after the current round ends, but before the next one is started.

Cosmos Cop

(UNI) Extra lives:
During the game, pause the game then press Up + B + Select to increase the lives counter.

(UNI) Extra weapon:
During the game, pause the game then press Down + A + Select to increase the weapon counter.

Creatom

(UNI) Instant unlock:
During the "Unlock you universe" level, press Left + B + Select, then Right + A + Start and finally A + B + Start to instatnly complete the level.

(UNI) Instant game over:
During the game, press Up + A + Start to instantly over the current game.

(UNI) GL counter:
During the game, press Start to pause it, then press Left + B + Select, after that press Right + A + Select, then hold Up + Select and press A or B to increase or decrease the "GL" cointer.

(UNI) GameGenie:
XVUAOTAV-Re-enables the debug variables display, while increasing/decreasing the GL counter values.
XTEPKYAV-More debug display when unlocking.
GEXAZSGK+GESAASGK-More debug display during the "Unlocking" mode.

Cross Fire

(UNI) Level select:
At the title screen, press Select, Select, A, B, B, Select, B, Select, A then press Start.
Source: Yakovlev Victor

(UNI) Invulnerability:
At the title screen, press B, B, B, A, B, Select, Select, B, A, A, Select then press Start.
Source: Yakovlev Victor

(UNI) Invulnerability and Level select:
At the title screen, press Select, B, Select, B, A, B, B, A, B, B, Select, Select then press Start.
Source: Yakovlev Victor

Crystal Mines

(UNI) Stage select and Extra lives:
At the title screen, you must hold some buttons on controller 1 and press Select, when the right combination of pressings is done, the cheat will be enabled. There is a various ways to enable this cheat, for example you can hold Right, press Select twice, release Right, press Select twice, hold Right, press Select twice, release Right, press Select, hold Right, press Select, release Right, press Select three times. Or you can just hold Up + A + B, press Select, release the buttons, hold Up + Left, press Select, release all buttons, press Select twice. A sound will confirm correct code entry and the title menu corsor will reset to 1 Player option. Now, at the stage number screen, press A or B to increase or decrease the level number by 1, instead of 5 and this allows you to select stages up to 100, instead of 81. Press Start to increase the lives. Press Select to enable the far range robot weapon, instead of generic one. Additionally, if you increase the stage number above 100, the stage counter will be reset to 1, but now all levels will be more difficult, due to faster enemy and obstacles movement. This mode can be reached normally, when you beat more than 255 stages. This all is works for both, the first and the second players.

Crystalis, God Slayer - Haruka Tenkuu no Sonata

All versions:

(UNI) Game pause:
For pause the game press B on controller 2.

Japanese version:

(UNI) Cheat mode:
Hold A + B on controller 1, then power off and on again the console, this doesn't work if you just reset the console. Now, during the game, press Start to enter the status screen. Press A on controller 2 to enable the super fast movement, press any D-Pad button to enable the invulnerability and add all items and equipment and 255 MP.

Cyberball

(UNI) Soft reset:
During the game press A + B + Select + Start on any controller.

Cycle Race - Road Man

(UNI) Bike replace:
During the game press Down + B on controller 1 to ask for bike replacement at any time.

(UNI) Stage select:
Hold A + B at controller 1 then press Reset. Now you could select any stage on the map to race.

Dai Meiro - Meikyuu no Tatsujin

(UNI) Sound test:
Press A, B, Up, Right, Down, Left, A, B, Start at the title screen.

(UNI) Cheat mode:
At the title screen, select the "START" or "CONTINUE" options, hold A + B and press Start on controller 1. During the game, on controller 2, press A to instantly cleat current level, press B to refill POW meter, press Up to obtain all items at maximum amount (shows the full map, and movig direction as well).

(UNI) Secret passwords:
OWARIDAI-Ending sequence

Daikaijuu Deburas

(UNI) Map select:
When you completed the game and your last save were between levels 15 and 16, you can use the cheat codes before starting a new game. Don't clear the SRAM data or save any other games to the last save slot to keep this ability. At the title screen, press Start, while intro cut scene is running, press Up, Down, Down, Down, Down, Down, Down, Up, Left, Left, Left, Left, Right, Right, Right, Down, Up, then press Start to select any map for the 1 player game.

(UNI) VS Map select:
When you completed the game and your last save were between levels 15 and 16, you can use the cheat codes before starting a new game. Don't clear the SRAM data or save any other games to the last save slot to keep this ability. At the title screen, press Start, while intro cut scene is running, press Left, Left, Left, Left, Right, Right, Right, Right, Down, Down, Up, Up, Down, Right, Left, then press Start to select any map for the versus game.

(UNI) Sound select:
When you completed the game and your last save were between levels 15 and 16, you can use the cheat codes before starting a new game. Don't clear the SRAM data or save any other games to the last save slot to keep this ability. At the title screen, press Start, while intro cut scene is running, press Up, Up, Down, Down, Up, Up, Down, Down, then press Start to listen the game music and sounds.

Daiku no Gen San 2 - Akage no Dan no Gyakushuu

(UNI) Level select:
At the "Irem" logo, quickly press Up, Right, Down, Left, Up, Right, Down, Left, then start the new game.

(UNI) SE test:
After the "Irem" logo, during the intro sequence, hold A on controller 2 and press Start on controller 1.

(UNI) BGM test:
After the "Irem" logo, during the intro sequence, hold B on controller 2 and press Start on controller 1.

Daiva - Imperial of Nirsartia

(UNI) Secret passwords:
たたかう-The Final Planet

Dalton McGuinty's Kids' Computer Game, M.C. Kids

(UNI) Player 2 pause:
Any time during the game, except the dialogs, press or hold Select on controller 2 to temporarily stop the game.

(UNI) Unlimited lives:
Find all 6 secret and access the "Ronald’s PuzzLeWoRlD". In the bonus worlds, collect all arches, do not complete the stage, but die instead. Do this for all three stages, then go to the Ronald and he will give you an infinite lives.
Source: tcrfwiki.tumblr.com

Dancing Blocks

(UNI) Cheat mode:
After the "Sachen" logo disappear from the screen, hold A + Select then press Start. Release A, but while still holding Select press B, Start, A, B, Start, Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start. If done right, three huge white kanji "陳關和" will appear on the screen and game will reset. This gives to you, an infinite lives, powerful weapon and ability to fire any direction at once and finally, you can select levels up to 65 with B, A still count up to 30 only.

(UNI) Hidden copyrights:
After the "Sachen" logo disappear from the screen, hold Up + Start. Release Up, but while still holding Start press Left, Down, Right, Up, Left, Down, Right, A, B, Select, A, B, Select, Select, Select, Select, Select. If done right, the copyright string will reappear on the screen alone.

Darkman

(UNI) Level select:
At the title menu, select the "HI SCORE" option, hold Right on controller 1 then press A or B. Now you will be in "DARKMAN CONTROL ROOM" instead of "RECREATION SYSTEM V1.00" and there will be password needed to access it. Enter "DERMA" as password. Now you can select any game sublevel and boss shooting, including the ending sequence.

(UNI) Soft reset:
Any time during the game, except the copyright screen, press Left + Select + Start on controller 2 to reset the game.

Dash Galaxy in the Alien Asylum

(UNI) Secret message:
During the game, pull at least 20 movable block to the elevator shaft. You can do this at any floor and continue to pull blocks even after death, no matter. Before the game over screen, all blocks pulled to the elevator are counts. When you pull the last block, a messages will appear, and after that you'll be rewarded with 10000 score points, 10 bombs, 10 keys and 10 detonators.

(UNI) GameGenie:
XOOOSKNO+VEOOUKLZ-Brings back the copyright screen from the development stage. There is just "COPYRIGHT SCREEN" and "LICENSED BY NINTENDO OF AMERICA INC." text used.

Datach - Battle Rush - Build Up Robot Tournament

(UNI) GameGenie:
LEXKTEIA-Re-enables a complex Debug Menu and Sound Test instead of "FACTORY" menu option.
IPOXGAPO-Re-enables a password entry screen used to generate a Robot.
Source: tcrf.net

Datach - Dragon Ball Z - Gekitou Tenkaichi Budou Kai

(UNI) Selftest:
Hold Select on controller 1 and Select + Start on controller 2 at the same time, then press Reset. The game will perform a quick PRG bank switching test, and 8-bit summing for first and last bytes of every PRG bank. If test is pass, then game will continue normal operation. If fails, then screen will turn white and game stops.

Datach - J League Super Top Players

(UNI) Backup mode:
At the title screen, hold Select then press Start on controller 1.

(UNI) Credits:
At the title screen, hold Down + Left + B + Select then press Start on controller 1.

Datach - Ultraman Club - Supokon Fight!

(UNI) Selftest:
Hold Select on controller 1 and Select + Start on controller 2 at the same time, then press Reset. The game will perform a quick PRG bank switching test, and 8-bit summing for first and last bytes of every PRG bank. If test is pass, then game will continue normal operation. If fails, then screen will turn white and game stops.

Datach - Yuu Yuu Hakusho - Bakutou Ankoku Bujutsu Kai

(UNI) Unknown:
Any time during the game, hold Start then press Select. The $0469 should be 3 or higher. The mode where it changes is unknown, but present somewhere in the game. This mode sets NMI sub index $7F, the last one, there you can change some values on the screen, seem like some player data editor.

Datsugoku, POW - Prisoners of War

(UNI) GameGenie:
IPKGAKIY+XTNKGTAV-The GameGenie code enables in-game level select cheat routine. To use it on controller 2 press A to switch level select mode on or off, press Right to cycle from 1 to 5 level number. Then press B to advance to the selected level.

Days of Thunder

(UNI) Hidden message:
At the title screen, when "PRESS START TO PLAY" is displayed, hold A, press B 4 times, release A, hold A, press B 1 times, release A, hold A, press B 26 times, release A, hold A, press B 5 times, release A. So this stands for word "DAZE" (D is a fourth letter, E is a fifth, etc...). A "GALERY" screen will appear. Press A to advance to the next secret screen. There is a total 9 secret screens with dot pictures of the game developers.

Deadly Towers, Mashou

(UNI) Debug mode:
Several debugging tools can be activated via the Family BASIC keyboard. Hold A + B on controller 1 along with one of the following keys, then reset the console:
@-CHR RAM test
L-CRC test
M-Monitor adjust
C-Color adjust
T-Timer on
S-Sound check
ESC-Reset
Source: tcrf.net

Deathbots

(UNI) Extra 60 lives:
At the copyright or the title screens, press on controller 2 A, B, Start then on controller 1 A, B, Start to begin the new game with extra 60 lives instead of 5.

Deep Dungeon 3 - Yuushi heno Tabi

(UNI) Maximum experience:
At the main menu, enter the "Load Saved Game" option, then select any game to play, hold Left then press Start. Release all buttons, then enter the code Up, Down, A, Select, Left, Start, B, Up, Down. All of your 4 characters will now have maximum of 65535 experience points.

Derby Stallion - Zenkoku Han

(UNI) Horse stats:
During the game, in the stables, select any horse from the left part of the field, then on the info screen on controller 1 press Select, Left, Up, Left, Up, Right, Up, Start to see all numerical parameters of the selected horse.

(UNI) Extra 5bil yen and instant Ending sequence:
During the game, in the stables, press B to enter the main menu, enter the last option ("SAVE"), press Select to enter the "TURBO FILE" menu, now on controller 1 press Right, Up, Left, Left, Down, Up, Down, A, after the message about loading, another message will appear, means you have now extra 5 billions yen and you can see the ending sequence instantly without using the cheat above, just wait for the demonstration.

Destination Earthstar

(UNI) Cheat mode:
To enable the cheat mode, hold Down + Select and press B, B, B on controller 2 during the game play. Release all buttons and you will hear a sound confirm correct code entry. Then press one of the following combinations on controller 2 to get corresponding effect.
Right + A + Start-Advance to the next level.
Left + B + Select-Repair damage during the space flight levels.
Up + Right + A-Difficulty of the flight levels (?). Need to investigate.
Left + B + Select-Extra 9 lives during the planet flight levels.

(UNI) Easter egg 1:
At the game over screen in the planet flight levels, hold Left + A + B on controller 1 to reverse the "GAME OVER" message to "REVO EMAG" for some strange purpose.

(UNI) Easter egg 2:
During the planet flight levels, when the Shield is obtained, hold A + B on controller 1 then press Up or Down to make the ship rotate around instead of sliding up or down.

(UNI) Disable music:
During the game, in the space flight levels, pause then unpause the game by pressing A + B twice on controller 1 to disable the backround music. In the planet flight levels, pause the game by pressing Start or Select then press A + B on controller 1.

Diablo (Nanjing)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box, but the proper graphics or text was removed from this version of the game. This cheat can be found in a couple of Nanjing games on the same engine.

Die Hard

(UNI) Speedup time:
During the game, pressing Start brings you to the status screen, where the time is stop. Press A + B + Select while in the status mode screen to run and speedup the time. It will lead to increase locks counters, and then the final time to leave the building. If you skip all this time, the game will over. Also this can be done during staircase events, when the game displays how much time you spent on climbing to another floor of the building.

(UNI) Continue:
Immediately after you were killed, before screen fades out, hold Down + A + B + Start. After the game over screen the "Continue" screen will show up. You have only two continues there though.

(UNI) Picture test:
At the difficult select screen, hold Up + Left + Select before starting a new game. Press A, but before the new game starts, you'll see all in-game splash screens with just one the same text: "Theo: "Lock one is down, Hans! I Estimate about a half hour to go!".

Digital Devil Monogatari - Megami Tensei

(UNI) Easter egg:
There is a specific monster encounter appears in the game. It's a BULL, which is flipped upside-down, with "BUG" text on his side. The game contain some Easter egg concerning this "BUG". When you encounter this enemy in battle, hold Down + Left + A + B on controller 2, then select option "AUTO" to start the automatic battle mode. The generic message about your character being fighting with a monster ("ナカジマたちはたたかっている。", which means "Nakajima and others start fighting."), will change to the secret message: "カブちゃんはDEBUGをはじめて。", which means "Cabu-chan begins debugging.".

Digital Devil Monogatari - Megami Tensei II

(UNI) Enemy stats:
After the game ending sequence (which is shows you all of bosses/places you've encountered during the game), the screen "END" will appear and loops. But if you hold Up + Right + A + B or Up + Left + A + B on controller 2 and Up + Right + A + B + Select + Start or Up + Left + A + B + Select + Start on controller 1 at the same time, the "END" screen will disappear and you will see all the enemies/bosses/monsters and demons with it's names, levels, HP/MP stats. All monsters are sorted by classes, and by levels from the higher ones to the lower ones. After all monsters are displayed, "DDSII" logo will continuously flashing on the screen, each roll changing colors from the whole colors palette.

Dizzy The Adventurer

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

(UNI) Soft reset:
During the game press A + B + Select + Start on controller 1 to return back to the title screen.

(UNI) Free movement:
During the game press Start to pause it, then hold Up + A and press Start again. Now, any time hold A + B + Select and move your character using the D-Pad buttons to any location. Be careful, some locations are still deadly.

Doki! Doki! Yuuenchi, Trolls in Crazyland, The

(UNI) Secret passwords:
"DB !"-First ending sequence
"DW *"-Second ending sequence
"!MGB"-Sound test
"Z!N*"-Secret message + Extra 99 Lives (The European version haven't a secret message but 99 lives is still there).

Don Doko Don

(UNI) Extra 12 credits:
At a player select menu press Left + A, Up + A, Right + A, Down + A, Right + A, Left + A, Down + A.

Donald Land

(UNI) Level select:
At the title screen, before the Ronald has jumped from the window, press A, B, Right, Left at the title screen, then hold one of the following combinations and press Up on controller 1.
A-Level 1 - Home Town World
B-Level 2 - Lake Side World
A + B-Level 3 - Forest World
Select-Level 4 - Sky World
A + Select-Level 5 - Oasis World
B + Select-Level 6 - Cave World
A + B + Select-Level 7 - Pond World
Right-Level 8 - Harbor World
Right + A-Level 9 - Ocean World
Right + B-Level 10 - Ghost Town World
Right + A + B-Level 11 - Dark Forest World
Right + Select-Level 12 - Castle World

Dong Dong Nao II - Guo Zhong Ying Wen

(UNI) Hidden game:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A then press Start to start a hidden "Pyramid" game instead of learning English.

Donkey Kong Country 4

(UNI) JY company's Easter egg:
At the title screen, press Up, Down, Up, Down, Left, Left, Right, Right.

Doraemon

(UNI) Debug mode and Easter Egg:
This can be done only for World 3. Before the World number screen appears, hold Up + Left + A + B + Select + Start on controller 1 and Down + Right + A + B on controller 2 at the same time. During the game use D-Pad on controller 2 to jump to the next screen in corresponding direction. Press A + B on controller 2 to show the Easter screen with blue DORAMI and word "KiKu". You can use World warps cheat to reach World 3, but instead of just A + B you must hold complete combination for Easter at the title screen.
Source: tcrf.net

Doraemon (Waixing)

(UNI) Stage select:
At the title screen, press A, B, Select, Up, Down, Left, Right, A then press Start.

Double Dragon II - The Revenge

US version:

(UNI) Continue:
The Japanese version of this game have "Continue" after the game over screen by default. The US version haven't continues normally, but you can use it with this cheat code. At the game over screen press one of the following combinations to enter the "Continue" mode and start again from the last played level.
on controller 1 Up, Right, Down, Left, A, B-For Levels 1-3
on controller 1 Up, Down, Left, Right, B, A, A-For Levels 4-7
on controller 2 A, A, B, B, Down, Up, Right, Left-For Levels 8~

Double Dragon III - The Rosetta Stone, Double Dragon III - The Sacred Stones

(UNI) Title screen skip:
At the "TECHNOS" logo screen in the US version, hold A + B on controller 1 and wait until the screen fades out. There is no such skip in the Japanese version.

Double Strike, Twin Eagle (Sachen), Shuang Ying (Joy Van)

(UNI) Extra 30 lives:
A the title screen, press Up, A, Down, A, then start a new game.

Downtown - Nekketsu Koushin Kyoku - Soreyuke Daiundoukai

(UNI) Watch the game:
At the Technos logo screen, hold Up + Select then wait for the title screen. Start a new single player game, 1P must be in the firs position, then setup the game parameters as you like. When all this done right, the game will start with all 4 players being controlled with the CPU, so you can just sit and watch.

Downtown Special - Kunio-kun no Jidaigeki Dayo Zenin Shuugou!

(UNI) Auto fight:
At the game mode selection screen before the game start or during the game, move cursor to the character selection option, hold Down + B on controller 1 then press Start. If done right, you will automatically start a new or continue current game, but now when any encounters appear on the screen, you'r character will fight automatically, just like your CPU opponent. Anyway, you still can control it yourself and fight if you want, or travel by your own. You can see if cheat is working, when your character will always turn face-to-face to your CPU controlled player if you stay still a while.

(UNI) Disable AI:
As the opposite type of cheat to the previous one, at the game mode selection screen before the game start or during the game, move cursor to the character selection option, hold Right + B or Left + B (according to the game mode you prefer) on controller 1 then press Start. If done right, you will automatically start a new or continue current game. From now, any encounters on any location will be helpless dummies, doesn't able to fight.

Dragon Fighter (Sofel)

(UNI) Sound test:
At the title screen, hold A + B then press Start.

(UNI) Level select:
Hold A + B button on controller 1 and press Reset, continue holding A + B after the title screen appears about 30 seconds. A sound will notice you that the cheat is enabled and you can release the buttons. Before the demo sequence starts, you can hold one of the following buttons on controller 2 to select desired level and then press Start on controller 1.
Right-2 level
Down-3 level
Up-4 level
B-5 level
A-6 level

Dragon Fighter (Flying Star, Unlicensed)

(UNI) Ending sequence:
At the title screen, hold Down + A + B on controller 2 and wait for a couple of seconds.

Dragon Quest II, Dragon Warrior II

All versions:

(UNI) Weird easter:
During the game, your position on the map should be $EB,$00 and $31 flag should be $00 (normally $01 on the world map, $40 in the dungeon, etc.) After a fight in this partucular location, when the reward is displayed, hold A on controller 2, then press A on controller 1. This will cause the message speed flag to be increased by 1 (var $62C, for fast is $28, normal $46 and for slow $FF). Only noticeable effect of this cheat would be different speed for different parts of the game, dialogs shoul be now slow speed, but fight message speed should be fast or normal if was slow.

Dragon Quest III, Dragon Warrior III

All versions:

(UNI) Forbidden names:
There is a forbidden name for name entry screen for both regional versions of the game. In the Japanese version you couldn't enter a name "ろと". For the US version, forbidden name is "Erdrick" in any combination of letter cases.

Japanese version PRG1:

(UNI) No random encounters:
This cheat was NOPed in PRG0 versions for all regions, but for some reason it was re-enabled in the PRG1 of the Japanese version. During the game, hold A on controller 2 while walking on the world map, the random encounter won't bother you anymore. Release this button to meet the enemy again.

Dragon Scroll - Yomigaerishi Maryuu

(UNI) A god's Narime promise:
After completing the game, people on the screen will throw a coffin and message "THE END" will slide right. After that, some people will start walking through the screen again. While they are walking, press Up + A + B on controller 2. A screen called "A GOD'S NARIME PROMISE" will appear. Here is some other cheats are available:
Press Down + A + B on controller 1-Return to the ending sequence with walking men and coffin, but this time all this will happen on the same "Narime" screen. You can return back to the normal "Narime" screen again with the same cheat as you did it before.
Press A + B + Select on controller 1-A message "あいことばは。。。。 ひみつが あるかも" will appear. From now, press A to return to the ending sequence starting from the dragon scene.
Press A 3 times, B 9 times, A 6 times and B 9 times on controller 1-A bottom message will disappear, now press A + Select. A message "きみの しあわせを しんじて" will appear. Press Select then message "ぼくは きみのますから さります" will appear. Finally, press Select to the final message "しあわせに まこ、、のぶちゃんより" and program will locked. You can't do anything any more here.

Dragon Slayer 4 - Drasle Family, Legacy of the Wizard

(UNI) Ending sequence:
To trigger this cheat you need a 4-player adaptor. With the same method as for previous cheat, you must press the button combination Left + Right + A at the title screen, but using the controllers 3 and 4. If done right, the title screen music will fade out and the staff roll begins.

Dragon, The

(UNI) Easter egg:
At the title screen, press Up, Down, A, B, Left, Right, B, A.

Dream Master

(UNI) Global skip:
Press A + B on controller 2 during the game to skip current cut scene or any other game's mode with no player involved. With this code, you can skip from the title screen just to the first dream intro and next to the game itself.

Dreamworld Pogie (Codemasters, Prototype)

(UNI) Extra 40 lives:
At the title screen, hold A, then press Start.

Drop Zone

(UNI) Secret words:
Play the game, score at least 10000pts to get to the name entry screen. Enter one of the names from the list below, then at the hi-score screen press Up, Right, Down, Left on controller 1. A small green enemy will appears as an animated cursor. This cursor will point only to secret names in the hi-score table. There may be more than one secret name entered previously. Choose any of it with Up/Down, then press Select. The effects cannot be combined, only one cheat at once.
ZOQ-Extra 10 bombs and Lives
NOJ-Extra 25 bombs and Lives
RRP-Doubles the cloak time
CZN-Start from WAVE 5
FHO-Start from WAVE 10
INR-Invulnerable to volcano particles and NMEYE enemy
KEN-Faster moving acceleration
LOB-Slower moving acceleration
BAZ-Higher gravity
WOW-Start from WAVE 75, Extra 25 bombs and Lives as well
MPS-Set the pinkish game palette and set the 10pts award for any destroyed object, even for those which has no award in the normal game.
HDB-Set all names to "JNR" and all scores to 100, so this will erase all previously entered secret names.

Duck Tales, Wanpaku Duck Yume Bouken

(UNI) Avoid falling from upper stages:
During the game, only bottom levels of the stage are deadly if you fall into the holes. When falling from the upper levels, you just moving to the lower ones. To avoid falling from the upper levels and loop back from the top of the screen, hold Up on controller 2 while falling.

Dungeon & Magic - Swords of Element

(UNI) Extra 18 HP and 2nd level:
At the first scene of the opening sequence (threes) wait for text starts displaying then press A, A, A, A, A, A, A on controller 2 before text stop. You can wait for the next opening sequence scenes to enter other cheats, but can press Start on controller 1 and begin a new game.

(UNI) Hidden level map:
At the third scene of the opening sequence (eye) before text starts displaying press A, A, A on controller 2. Then press Start on controller 1 and begin a new game. During the game you can press Up on controller 2 to view current level map.

Dusty Diamond's All-Star Softball, Softball Tengoku

(UNI) Credits screen:
Beat the game, any time during final animation, on controller 2 hold Up, press A 3 times. Then hold Down and press B 6 times. Then press Select on controller 1.

Dynamite Bowl

(UNI) Ending sequence:
Hold Select on controller 1 just before the reset the console or before the title menu appears. Now at the title menu press A to increase internal counter to 1, press B to increase internal counter to 10. You need a number 31, so you can just press A 31 times, or B three times, then A one more time, or any other available sums. Press Start at the title screen to view the ending sequence.

Earth Worm Jim 2 (Shin-Shin)

Single game version:

(UNI) Easter egg 1:
Press Down, Down, Right, Left, Left, Up, Right, Left, Down, Right at the title screen.

(UNI) Easter egg 2:
Press Up, Down, Left, Left, Left, Right, Up, Right, Left, Down at the title screen.
Source: Yakovlev Victor

2-in-1 game version Part 2:

(UNI) Secret passwords:
XFILE-Easter Egg

2-in-1 game version Part 4:

(UNI) Secret passwords:
NBA96-Easter Egg

Earth Worm Jim 2 (Super Game)

(UNI) Debug feature:
Pause the game then press A + B to enable cheat mode, then press Up, Left, Down, Right, A, A, B, character will disappear and you will be able to scroll any place of level. To put character back, press Start.
Source: Yakovlev Victor

Earth Worm Jim 3

(UNI) Easter egg:
Press Up, Up, Up, Down, Down, Down, Left, Right at the title screen.

Egypt

(UNI) Super free play mode:
Choose "edit" mode at the title menu. Move cursor up (do not move it left or right!) and point it to the area right above the edit menu window frame, just between two first horizontal background lines, then press A. Message "super free play mode on" will appear. Now choose "free play" mode and you'll be able to select any level.

(UNI) Password generator:
Level:
Difficulty:
Magic:
Rooms:
Password:


Eliminator Boat Duel

(UNI) Stage select:
At the title screen, hold Up + B on controller 1, then press Start. While the opponent's speech screen is displayed, hold Left and press Select on controller 1 to switch to another opponent, hold Right and press Select to instantly win the current match.

Elite

(UNI) SRAM clear:
Hold Up + Left + B + Select on controller 1, then press Reset and wait before the title screen appears. This will write some garbage to the SRAM and force the check routine to rewrite it and restore.

(UNI) Credits:
At the demo screen with the rotating objects, hold A + B + Select + Start, then release all the buttons at once. Instead of initial "Practice combat sequence" text you'll see a Credits roll.

Elysion

(UNI) Secret passwords:
Enter one of the following password to enable the location warp for the corresponding class, along with higher specs/experience, etc. During the game press Start to warp to the next key location (just like in Crystalis/God Slayer). At some points in the game you can switch current class and continue to warp to the corresponding locations, which is different for every class. There is no indication, where it can be enabled, depending on the story itself, but if you at the such point, press A 5 times, then press Select to cycle between 4 possible ways to continue, then press Start to warp to selected story line.
たいりよ くいちば んみのすくん-Minos class.
せいせき ゆうしゆ うあいれ ちやん-Aylex class.
おによが はやいぞ でおねあ ちやん-Dionea class.
みりよく さいこう びすかむ くん-Viskam class.
くかいら いんじい ていえす-Minos class, ultimate specs/experience, etc.

Emoyan no 10 Bai Pro Yakyuu

(UNI) Auto infield play:
Hold B on controller 1 and press Reset. During the game, when in the infield closeup mode, the catcher will always throw the ball immediately to the base, instead of waiting for player input. As well as runner will always run automatically to the next base, according to the situation.

Erunaaku no Zaihou

(UNI) Starting point warp:
During the game, hold Down + A + B on controller 2, then prees A on controller 1 to immediately return back to the starting point of the level.

Escape From Atlantis

Prototype 1 version:

(UNI) Level skip:
Any time during the game, press Select + Start on controller 2 to skip current level. This cheat was removed from next Prototype version.

Esper Dream 2 - Aratanaru Tatakai

(UNI) Secret words:
Enter one of following words as a player name, then hold on controller 2 corresponding button combination and press Start, release the controller 2 buttons when the next screen appears. Both words has the same effect, gives you extra 255 gold.
こや 2-Hold Up + Left on controller 2
あ0き -Hold Up + Right on controller 2

Exciting Boxing

(UNI) Secret masked opponent:
After you beat all 7 opponents and the "END" screen is displaying, hold Up + A on controller 2, then press any button on controller 1. Instead of regular title screen, you'll get to the secret opponent challenge request. Press Start then select the "VS MODE" to play it. You also can obtain the password with this secret opponent.

F-1 Sensation, Formula 1 Sensation

(UNI) Empty cheat 1:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A (also can be entered on pause during the game), a sound will confirm correct code entry. Cheat does nothing. Probably there was some other cheat at the development stage.

(UNI) Empty cheat 2:
At the title screen, press B, A, B, A (also can be entered on pause during the game), a sound will confirm correct code entry. Cheat does nothing. Probably there was some other cheat at the development stage.

(UNI) Cheat mode:
Press A, B, A, A, A, B, A, A at the title screen (also can be entered on pause during the game), a sound will confirm correct code entry. Effect identical to "ED.ED" secret word effect except it can be used in "FREE MODE".

(UNI) Speed boost:
During race, pause the game, hold Up + A and then press Start to unpause. The speed of the car will be temporarily boosted to it's maximum, even if you were standing. Speed will return to it's normal value or to 0 if you don't accelerate.

(UNI) Add lap time:
During race, pause the game, hold B + Select and press A to increase the internal lap timeout timer. If this timer is dropped down to 0, then you'll get retired from the current race. With this cheat you can increase this timeout counter up to maximum as much as you need and stay on the race for a long time you need.

(UNI) Secret words:
Enter one of following words as a player name in the "GRAN PRIX" mode. When name is entered right a sound "GO!" will confirm correct name entry.
KONAMI-Does nothing
MOAI-Does nothing
BEST-Does nothing
ED.ED-Unlimited tires and more cheat features.

F-15 City War

All versions:

(UNI) Extra 30 lives:
At the game start of after the game over screen, at the tile menu, press Select 20 times, cursor should stop at the "CONTINUE" option, then press Start to continue the game with 30 lives. This only works if you continue from the first two levels.

REV 1.x version:

(UNI) Stage select:
At the tile menu, press Select 10 times, cursor should stop at the "CONTINUE" option, press A to switch between 1, 3 and 5 levels (press A to play the same sound as Select now), press Start to play from selected level.

F1 Circus

(UNI) Ending sequence:
Hold Up + A + B + Select + Start on controller 1 and press Reset.

(UNI) SRAM clear:
Hold A + B on controller 2 and press Reset.

(UNI) Skip current race:
During the game press Down + Select on controller 1. This ends the current race with worst results. Additionally to these buttons, hold A + B on controller 2 during qualify race to complete it with the best result ever: 00:00:00. But you can't get the best result during regular championship race, anyway.

(UNI) Machine select:
During World Championship, highlight the "LAP" menu option, hold Up + A on controller 2, then press A on controller 1 to select the Machine, which is not available during normal game.

(UNI) Course select:
During World Championship, highlight the "LAP" menu option, hold Right + B on controller 2, then press A on controller 1 to select the Course, which is not available during normal game.

Famicom Disk System BIOS

(UNI) Self test:
Hold Select + Start then press Reset. Messages "PRAM CRAM" and "PORT" will appears. If internal RAM test fails, instead "OK" will be displayed first bad RAM address.

(UNI) Secret message:
Hold Select + Start, press Reset, then in next two seconds release Select + Start and hold Right + A. Message "2C33 INTERNAL ROM PROGRAMED BY TAKAO SAWANO NINTENDO CO.,LTD. DEV.NO.2" will appears.

FamicomBox

(UNI) Easter egg:
Turn key on the FamicomBox front panel all the way to the left. When "GAME TITLE & COUNT DISP." screen displayed, press Up, Down, Left, Right, A, B, Select, Start on controller 1. The screen will scroll up, instead of menu "NINTENDO ENTERTAINMENT SYSTEM (FAMICOMBOX) DEVELOPMENT..STAFF" screen will appear. Now, press Select to cycle through the staff members.

Famicom Jump II - Saikyou no 7 Nin

(UNI) SRAM test:
When no save data is present (first boot or battery was removed or saves are damaged), hold Left + A + B on controller 2 then press Reset. This will init the whole SRAM with particular byte pattern. The screen will turn green and game stops. Now, hold only A + B on controller 2 and press Reset again. The game will test for the particular pattern presence, if test is ok, the game will reinit it's SRAM and continue normal play. If not, the screen will turn red and game stops. With this feature, you can test as well SRAM integrity or how is battery keeps save data, if you remove the cart between two mentioned above operations.

Famicom Meijin Sen

All versions:

(UNI) SRAM clear:
Hold A + B on controller 1 and controller 2 at the same time, then press Reset.

Famicom Wars

(UNI) SRAM clear:
At the main game menu, before the game starts, hold A + B both on controller 1 and controller 2 at the same time, then press Start on controller 1.

Family Boxing, Ring King

(UNI) Super power:
At the gym screen, where you can set up your parameters before the fight. Enter the following button sequence: A on controller 2, A, Select, A on controller 1, B on controller 2, Select on controller 1, A, B on controller 2, B, B on controller 1. From now, your punch power will be at the maximum and enemy's punches won't damage you. But you couldn't save your progress with the passwords. A password string will be always "ANTAWOTUYOI", which means "YOU ARE STRONG".

Family Circuit

(UNI) Extra acceleration:
Normally, during the game, if you press B, your car will brake. But, if you hold A at the title screen and press Start, the brake button will turn into acceleration button. So, pushing B during race will twice the acceleration speed as well the speed itself. There is other method for enable this cheat, seems its just a bug. If you start a new "Kansen" mode race, the acceleration button will be enabled too. You just need to skip the race by pressing Select to return back to the title menu. This cheat also disables the random opponent car selection in the Sprint Race or Taikyuu Race modes. You will always race with the first 8 cars from the predefined cars list.

Family Circuit '91

(UNI) Retire from race:
During the game in any game mode, press Select + Start to retire from the current race.

(UNI) Clear Sprint Race memory bank:
While selecting the memory bank in the "SPRINT RACE" game mode, hold Select on controller 1, then press B to erase selected memory bank.

(UNI) Clear Time Attack record:
Enter the "TIME ATTACK" mode, select a course. Now at the Record Data and Settings screen hold Select on controller 1 and press B to clear current record.

(UNI) Special practice courses:
Enter the "COURSE SELECT" in either the "FREE PRACTICE" or "TIME ATTACK" game modes. Highlight either the "LONG RUN" or "FRANCE" courses, hold Select on controller 1, then press A. This will gives to you two extra hidden courses.

(UNI) Special endurance course:
Enter the "ENDURANCE RACE" mode. Highlight the "LONG RUN 50" course, hold Select on controller 1, then press A. This will gives to you an extra hidden course "OLD LONG RUN".

Family Computer - Othello, Othello

(UNI) Edit mode:
At the time limit select menu for any mode, except "SLOT", press Right + A on controller 2 and A + B + Select on controller 1 at the same time and hold all buttons until the name entry screen appears. Before the game start, you will be able to put black or white stones on the table by pressing A or B, then press Start to finally start a new game with given field configuration. To edit field configuration in the "SLOT" mode, hold the same button combination at the mode selection screen. Unfortunately, you couldn't see the ending credits if using this cheat on any difficult level.

(UNI) Slot game:
In addition to the main "SLOT" mode, there is other "SLOT GAME" mode can be enabled. When 2 player game is over and message "GAME END" is displayed, hold Select on controller 1, the press A on any controller. The player who pressed A, when in "SLOT" mode type 1 or regular 2 player game, will be asked to roll the dices then pick up a color. When in "SLOT" mode type 2, a random star will be jumping over the field, press B to stop it, then pickup a color. A stone of the selected color will be placed on the field in given position. Other player should do the same next. This may change the game results by luck.

(UNI) Hidden staff screen:
There are two endings in this game, the first one you get when beat the Level 4 computer, the second one you gen when beat the Level 5 computer in a special game after that. The Staff screen is displayed always in the second ending, but if you hold B on controller 1 during the first ending, you can see the same Staff screen as well.

Family Mahjong II - Shanghai heno Michi

(UNI) Luck control:
In the Mahjong Grand Prix mode, the program does some additinal luck manipulation. Although the tiles are shuffled once before the match, sometimes, the game can look for the tile, that can help you to complete the mahjong, and swap it with the topmost tile in the stack, which should be tossed to the player in the next round. It depends on the player's stats (mahjong power, luck and stamina), which determines how many tiles in the nearest stack will be checked for the tile you need. If sum of your stats is greather than 200, then no tiles will be checked, if sum is between 150 and 200, then first 10 tiles will be checked, first 7 tiles will be ckecked if sum is between 100 and 150, and finally only first 4 tiles will be checked if sum less than 100. Obviously, if there are no useful tiles in the nearest stack, you'll just get the next random tile from the stack. This also does mean, that you just obtain the tile you need much earlier, but all the tiles you don't need will be given to you later anyway.
Normally, you can only control the depth of mentioned search by keeping the player's parameters in the proper range. This gives you a little more luck during the game. But you can obtain the useful tile only when the programm picks one of your tiles in hand to check if any other useful tiles in the stack, this means a random value in range from 0 to 255 should be less than 13. However, you can increase it's probability slightly, by using the buttons on controller 2. Every button stands for a number: A - 1, B - 2, Select - 4, Start - 8, Up - 16, Down - 32, Left - 64, Right - 128. When you hold a button combination, the numbers are summing, and resulting value is using as the divider for the random generator. The resulting random number calculated as remainder of division. For example, hold A on controller 2 during the game, and all random numbers will be divided by 1. Remainder of this operation is always 0, so, the game will look for the tile that exactly or less by 1 than leftmost player's tile in the hand. Or, hold A + Select + Start on controller 2, to divide the random number by 13. In this case, it will always look into the player's hand and pick up any of it's 13 tiles to look for in the stack, resulting in higher probability.

Family School

(UNI) Instant game over:
During the game press A + Select + Start on controller 1 to instantly over it and see the results. There is no exit from the results screen except reset.

Family Trainer - Athletic World, Athletic World

Japanese version:

(UNI) Secret words:
Enter one of the following words as a player name:
はたなかまさこ!!!-This will allow you to select the stage of the game to start with, and some additional features (need to investigate), to do that you need fill the year in the date field. To select a special features, enter for the first number of the year any non-zero value. To select a stage, enter the second number of the year to any value from 0 to 4, values from 5 to 9 can be entered too, but they cause a heavy glitches to the rounds.

Famista '89 - Kaimaku Han!!

(UNI) Credits:
At the title screen hold A + B on controller 1 then press Start.

Famista '92

(UNI) Soft reset:
Press Start then immediately press Select.

(UNI) Test menu:
At the title screen, press Left 9 times and Right 2 times (in any order), then press Start.

Famista '93

(UNI) Test menu:
At the title screen press Left 9 times and Right 3 times (in any order), then press Start.

Famista '94

(UNI) Test menu:
At the title screen press Left 9 times and Right 4 times (in any order), then press Start.

Fantastic Adventures of Dizzy, The

All versions:

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Aladdin version:

(UNI) Soft reset:
During the game press A + B + Select + Start.

(UNI) Extra life:
At the intro screen after the title screen, press Left + Select.

(UNI) Minigames warp:
During the game, in the Dizzy's house, stand under the table in the middle between two cupboards. Pause the game, then hold A + B and press one of the following buttons to select corresponding mini game. Now release all the buttons, unpause the game and exit from the house. Instead of outside of the house, you'll start a selected minigame.
Up-Ride on the trucks.
Down-Shooting range in the Castle.
Left-Underwater bubbles ride.
Right-River ride.

Fantasy Zone (SunSoft)

(UNI) Sound test:
After beating that damn hard game, when the "staff" roll is about to over, press on controller 2 Left 33 times. After "staff" ends, sound test mode will appear.

Fantasy Zone (Tengen)

(UNI) Invulnerability:
In game press Select then press A, B, B, Start, Start, Start, B, B, A, Select.

(UNI) Level skip:
In game press Select then press B, A, B, A, Start, Select.

Faria - A World of Mystery and Danger!, Faria

Japanese version:

(UNI) Secret words:
Enter one of following words as player name:
むしか-Sound test. Note: after entering three symbols, press "end" option.
つっょい-Begin game play with invulnerability, unlimited gold and other bonuses.
っりわお-Begin game play with all quests completed.

Fighting Hero (Unl)

(UNI) Secret moves:
At the title screen, press Up + Left + A + B on controller 1, then start a new game, and while on the stage select screen press Down + Left + B on controller 1. Now you'll be able to use three secret moves: Up + A + B - high uppercut, Left + A + B - round kick, Right + A + B - fireball.

Fighting Hero III

(UNI) Secret moves:
Start a new VS CPU game, loose 4 times. At the continue screen, when the number of continues is 6 and the countdown timer is 6 too, press Start. Now you'll be able to use three secret moves: Select - high uppercut, B + Select - round kick, A + Select - fireball.

Fighting Road

(UNI) Test mode:
Hold A + B on controller 1 then press Reset.

(UNI) Secret passwords:
TO LAST !!-Ending sequence
DEBUG*MODE-Enable in game debugging mode.
Pause the game and use following buttons to get additional effects:
A-Toggle player's invulnerability
B-Toggle enemy's invulnerability
Select-Enemy kill
Up-Restore player's health
Down-Fill power bar
Left-Restore enemy's health

Final Combat

(UNI) All weapons:
At the title menu, select the "START" option and press Start, then while a sound is playing quickly hold Up + Left + A + B.

Final Fantasy III

(UNI) Secret message:
Holdin Up + Left + Select + Start, power the console off, then on again, and then release Select. There is no software protection involved, just another way to hide the developer credits if the normal ones is removed.
Source: tcrf.net

Final Fantasy V (Mars)

(UNI) Easter egg:
During the game, enter the menu by pressing Select then press Left + Select + Start on controller 1. A "MARS" logo will appear at the top-left corner of the screen.

Final Fight 3

(UNI) JY company's Easter egg:
Press Down, Down, Left, Up, Right, Left, Up, Down at the title screen.

(UNI) Stage select:
During the game, press Start, then press Select. The screen will turn black. Press A or B a number of times, corresponding to the desired level. For example press A 1 time to go to the stage 1-2, press A 16 times to go to the stage 6-2. Do not press more than 16 times, this will crash the game.

Fire 'n Ice, Solomon no Kagi 2 - Coolmin Tou Kyuushutsu Sakusen, Solomon's Key 2

US version:

(UNI) Password generator:
12345678910
World 1-
World 2-
World 3-
World 4-
World 5-
World 6-
World 7-
World 8-
World 9-
World 10-
Random:
Password:


Fire Emblem

(UNI) Sound test:
After saving current game, when asked, select "no continue" option to end current game. Then press Up, Down, Left, Right, Up, A.

Fire Emblem Gaiden

(UNI) Sound test:
When first messages appears on screen after powering up the NES system, press Up, Down, Left, Right, Up.

Fire Hawk

(UNI) Mission 4:
At the title screen, hold Up + Right and press Start.

(UNI) Extra life:
At the title screen, hold Left + B + Select and press Start.

(UNI) Invincibility:
At the Mission screen, hold Up + B + Select and press Start. The helicopter color will change, now you are invincible, but the fuel still may run out. You should re-enter this cheat before the every mission.

(UNI) Mission skip:
At the Mission screen, press one of the cheat sequences below, corresponding to the mission number, to skip to the next mission instantly:
Up, Right, Down, Left, Left, Left, Left, Left-Skip from Mission 1 to Mission 2
Up, Left, Down, Right, A, B, B, B-Skip from Mission 2 to Mission 3
A, B, Up, Right, Down, Left, Up, Right-Skip from Mission 3 to Mission 4
A, B, Select, A, B, Select, Select, Select-Skip from Mission 4 to Mission 5
Up, A, Down, B, Left, A, Right, B-Skip from Mission 5 to Mission 6
Left, B, A, Up, Right, Down, B, A-Skip from Mission 6 to Mission 7

(UNI) Credits:
Before the title screen appears (at the Codemasters logo, or after the game over screen, or after the demo loop is over), hold B. This cheat can be done via the secret player's name, see below.

(UNI) Dizzy demo:
Before the title screen appears (at the Codemasters logo, or after the game over screen, or after the demo loop is over), hold Right + A + Start. This cheat can be done via the secret player's name, see below.

(UNI) Secret words:
Enter one of the following words as a player name in the hi-score table and you'll see some programmer's messages and demos:
"DIZZY......"-"BUY IT NOW!" (Dizzy demo)
"CREDITS...."-"FAMOUS NOW " (Credits)
"OLIVER TWIN"-"THE AUTHORS"
"CODE MASTER"-"BRILLIANT! "
"CAMERICA..."-"GOOD GUYS! "
"POGIE......"-"WE LOVE YOU"
"YOLKFOLK..."-"DIZZY FAN "
"DENZIL....."-"COOL DUDE "
"DORA......."-"DIZZYS SIS "
"DAISY......"-"DIZZYS GIRL"
"GRAND D...."-"YE WISE ONE"
"DYLAN......"-"OH WOW MAN!"
"DOZY......."-"ZZZZZZZZZZZ"
"MIG 29....."-"ITS 3D FUN "
"BMX SIM...."-"WE WROTE IT"
"BMX SIMULAT"-"ONE OF OURS"
"ROBIN HOOD."-"WE WROTE IT"
"ANDREW OLIV"-"AUTHOR "
"PHILIP OLIV"-"AUTHOR "
"PAUL ADAMS."-"ARTIST "
"GAVIN RAEBU"-"MUSICIAN "
"           "-"SOMEBODY "
"TOYOTA MR2."-"MY NEW CAR "

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Flintstones, The - The Rescue of Dino & Hoppy

Japanese version:

(UNI) Debug mode:
When the "PUSH START BUTTON" message starts flashing, press A, A, B, B, Right, Down, Down, Down, Down, Down, Down, Down, Left, Start to enter the debug mode. First, choose one of two game modes "NORMAL" and "NOHIT", then a number will appear. Press Up or Down to change it, press A to hear a sound with the corresponding number, or press Start to start from the level with the corresponding number. In the "NOHIT" mode, you will have an invulnerability and all extra abilities. Additionally, during the game on controller 2 press B to switch the game into the frame advance mode (press A to advance frames or B to switch back to the normal mode), and press Up on controller 2 to skip current level.

(UNI) Test mode:
When the "PUSH START BUTTON" message starts flashing, press A, B, A, B, Up, Right, Right, Right, Down, Down, Down, Down, Left, Left, Start to enter the test mode. This mode is a simple version of "Debug mode", allows you to select and hear a sound and music and set up the desired level. There is no "NOHIT" mode and no extra abilities are available.

Flipull - An Exciting Cube Game

(UNI) Level select:
At the title screen, press Down, Left, Right, Up, A, Right, Down, B, Up, Left, Start.

Flying Hero

(UNI) Continue:
At the game over screen, press Up, Up, Down, Down, Select, Select, Select, Select, Start.

Flying Warriors, Hiryuu no Ken II - Dragon no Tsubasa

US version:

(UNI) Intro skip:
To skip the starting intro, press A + Select.

(UNI) Secret passwords:
MUSIC-Sound test
END-Ending
888-Characters presentation. One by one will be displayed characters cards with short descriptions.
8xy-Level select.
x - stage number from 1 to 4.
y - substage number from 1 to 3.
For example, password "843" means the latest stage.
Source: Yakovlev Victor

Fong Shen Bang - Zhu Lu Zhi Zhan

(UNI) Debug:
To enable debug mode, during the game, hold for a while Up + B + Select + Start. A sound will confirm if code is enabled. Now, press Select to toggle on and off walk through the walls, press Start while in fight mode, to end it instantly.

(UNI) Unknown:
Hold Select or A + B, then press Reset. The gray glitchy square or two will appear. Probably there was some copyright screens, currently removed.

Free Fall, Sunday Funday (Wisdom Three)

Sunday Funday game:

(UNI) Skip level:
Just like in the original version of this game "Menace Beach", start a new game, then press Up on controller 2 and Up + A + B on controller 1 at the same time. Now, during the game press B + Select on controller 1 to advance to the next level, up to ending animation sequence.

Freedom Force

(UNI) Sound test:
Connect controller 2 to the console instead of the Zapper. At the game mode selecting screen hold Up + Left + A + B on controller 2. Use controller 2 to selecting and playing music. Press A + B to exit.

(UNI) Secret message:
After beating all 5 levels, when message "CONGRATULATION" appears on the screen, on controller 2 press A. Message "HIRO-KUN" will appear.

(UNI) Level skip:
Pause the game (controller 1 must be connected), then press A 16 times and additionally one more time for each level. For example, you must press A 17 times to skip Level 1, and 21 times to skip fifth level. This works only once per game.

Fushigi no Umi no Nadia

(UNI) Secret words:
Enter one of the following words as a player's name:
でばッぐ-Maximum stats by default for all units. Note, that before "ぐ" used symbol from Katakana slphabet, not the Hiragana as the rest of the symbols.

Fuzzical Fighter

(UNI) Extra gold and maximum HP and MP:
Enter the Palette editor mode, as described above, when your maximum HP is exactly 224, and amount of gold meet the rule: in a hexadecimal notation, the lower 8 hex nibble of the gold number should be the same as higher 8 hex nibble (for example, first obvious amount is 0, also decimal 257 in hex notation is $0101, or decimal 1285 is $0505 in hex, both meets this condition). If all conditions are met, hold Down on controller 1 and press Select or Start to exit the Palette editor mode. You'll get the 7777 gold and 240 both to maximum and current HP/MP, as well as 9 Fuzzy points.

(UNI) Free magic:
During the game, select any magic, use it by pressing A on controller 1 while holding any button on controller 2, except Up, to cancel MP consumption. This means that any magic can be used any time any number of times, and seems this cheat is one more development leftover, since it's very easy to beat the game with this cheat with no need to upgrade and lift up your abilities.

(UNI) Hyper debugger mode:
At the title screen, hold A + B on controller 2 and A or B on controller 1 at the same time, then press Select on controller 1.

G.I. Joe

(UNI) Secret passwords:
ZLGMZLGMZ-3 Members, Leader Duke, Maximum level
ZSFXZSFXZ-2 Members, Leader Duke, Maximum level
ZKNZZLBBZ-2 Members, Leader Duke, Maximum level
ZMSCZTSTZ-Sound test
Z1STZNDGZ-Ending sequence

G.I. Joe - The Atlantis Factor

(UNI) Copyright screen:
Hold A, then press Reset. This will show the Capcom logo and the copyright screen, that will be showed by the game itself at the game's boot. So, the Capcom logo will be displayed twice. One more seemingly useless cheat, like the previous one, probably intended to keep copyrights if the game was somehow hacked (ant IT IS!).

Galaxian

(UNI) Music player:
Power the console, press Reset 44 times. Then, hold A + B on controller 2 then press Reset one more time. Screen will changes, at left side of screen will fall flashing in music rhythm tile, until it reaches bottom of the screen you can press Reset again, each 45 pressings will change music. There is total 5 melodies hidden between graphic tiles in CHR ROM. For last two melodies offset in CHR ROM shifted by 128 bytes, or 8 tiles from starting play offset, so you will hear some strange "music" while first 8 tiles with normal graphics will play. It is possible to trigger this player another way. Reset the system only 10 times after power on, then shout in microphone on controller 2 of Famicom console 4 times. This need additional 34 resetting before reaching second melody.

Gambler Jiko Chuushin Ha - Mahjong Game

(UNI) Autoplay menu:
Normally during the game, only in the Free play mode you could enter the in-game menu by press Select and select either to open all players tiles or enable autoplay. However, you can open the same menu in any other mode if hold Up + Down + Right on controller 1 before pressing Select.

Gambler Jiko Chuushin Ha 2

(UNI) Autoplay menu:
Normally during the game, only in the Free play mode you can see the opponent tiles using the menu by press Select. In any other mode, however, you can enable this option too, using the 4-Player adaptor for the Famicom. During the game, enable the autoplay mode, then hold for a short time Up + Down + B on Controller 3, to enable the rest of the menu options. Now, you can disable the autoplay mode and open your opponent's tiles.

Game Party

(UNI) Cheat controls:
Hold A on controller 1 and B on controller 2 at the same time, then press Reset. During any game, except "MIND Q", press Select on controller 1 to enable cheat controls, using D-Pad on controller 2 move the ball in any place, additionally while holding A or B on controller 2 you can move also the player 1 or player 2 rackets in the "AIR HOCKEY" game or lift up or down the ball in the "BASKETBALL" game. Press Start to return controls to normal state and continue playing. If you press Select at the main game menu, the cheat controls will be disabled. Was actually a part of this cheat, involving the additional key press after the game selection, when some flag is displayed, but for some reason isn't used.

Ganbare Goemon! - Karakuri Douchuu

(UNI) CRC test:
Hold A + B, then press Reset. After some time message "ごえもん 1ばん" and "こなみ 1ばん" appears. First one is results for PRG CRC test, second one for CHR CRC test. If test fails, then message will be "2ばん".

Ganbare Pennant Race!

(UNI) Secret passwords:
S-Sound test
ふらの-Ending sequence

Garfield - A Week of Garfield

(UNI) Level select:
At the title screen, press Up + Left + B on controller 2 to increase the starting level number up to 8, press Start to play from the selected level.

Gargoyle's Quest II - The Demon Darkness, Red Ariimaa 2

(UNI) Secret passwords:
14142135-1732050-Start a game with extra 9 lives and all magic available.

Gegege no Kitarou - Youkai Dai Makyou, Ninja Kid

(UNI) CRC test:
Hold any button on controller 2 then press Reset. The game will test PRG and CHR ROMs consistency with 16-bit checksum. If the PRG test fails, then screen will locked with the red color. If the CHR test fails, then screen will be blue. If all is ok, then game will continue as usual. The US version has the checksums from the Japanese version, so PRG test don't pass.

(UNI) Unlimited lives:
Hold on controller 1 Left + B, press Reset, release the buttons.
Hold Right + B, press Reset, release the buttons.
Hold Up + Down + Left + B, press Reset, release the buttons.
Hold Down + B, press Reset, release the buttons.
Hold Right + B, press Reset, release the buttons.
Hold Up + Right + B, press Reset, release the buttons.
If all done right, the live counter won't be decreasing after death. Note, if you write down the button codes for this cheat: 42 41 4E 44 41 49 in ASCII, you'll get the string "BANDAI".

Ghoul School

(UNI) Debug mode:
At the "Electro Brain presents" screen press quickly B, Up, B, B, Left, Select. You can select any game screen or level to start, play sound or game music, and after start you will have all items in inventory.

Gilligan's Island

(UNI) Episode select:
At the episode number screen, hold Down + Right + B on controller 2, then press Down on controller 1 to increase the episode number from 1 to 4.

Goal! 2, Goal! Two, Goal!!

(UNI) Hard mode:
Hold Up + A + B + Select + Start on controller 1 and press Reset. Title name color will change to blue for the Japanese version, or Title background color will changed to dark blue for the US version.

(UNI) Music test:
Hold A + B on controller 2 and press Reset.

Godzilla - Monster of Monsters!, Godzilla

(UNI) Password generator:
Note, there are a lot of redundancy in this password system. Most of parameters can be invalid (valid stages are from 0 to 7, valid locations not higher than 64, etc...), there are two unused Monsters slots for unused player characters (see tcrf.net). It is possible to generate malformed password without valid structure with almost any data inside, so passwords like "GH1D0RA" are possble (can be generated using the "Hack" option).
Stage:
MonstersAliveLocationLevel
Godzilla:
Mothra:
Unused:
Unused:
Ghidora:
Mecha-Godzilla:
Hedorah:
Gigan:
Baragon:
Moguera:
Varan:
Gezora:
Hack:
Size override:
Extra bits:
Random:
Password:


Golf '92, The

(UNI) Hole select:
Hold Down + Left + A + B + Select on controller 1, then press Reset. During the game press Select to switch to the hole select screen.

(UNI) Autoplay mode:
Hold Up + Right + A + B + Select on controller 1, then press Reset. Now both players will be CPU controlled.

Golgo 13 - Dai 1 Shou - Kamigami no Tasogare, Golgo 13 - Top Secret Episode

Japanese version:

(UNI) Lyrics easter:
During the game, press Start to pause it. While lyrics is displaying, sing into the microphine on controller 2. If you sing long enough, after the lyrics is over, the game will display your score from 10 to 100.

Golgo 13 - The Riddle of Icarus, Mafat Conspiracy - Golgo 13

Japanese version:

(UNI) Debug menu:
Any time during the game, hold Select on controller 1, then quickly press A, B, A, B, A, B, A, B, A, B, A, B, A, B, A, B on controller 2. You will be able to select any plot animation or level, also use the D-Pad buttons on controller 2 controls to play music and sound effects.

Goonies II, The - Fratelli Saigo no Chousen, Goonies II, The

Release versions:

(UNI) CRC test:
Hold A + B on controller 1, then press Reset. After some time, the message "GOONIES2 ONE" will appear if the PRG CRC test is OK, or "GOONIES2 TEN" if the CRC test fails. The European version of the ROM has the "TEN" message.

Prototype version:

(UNI) Secret messages:
During the game, when you find the "TRANSCEIVER", enter any door, from the menu select the "TOOLS" option, highligh the "TRANSCEIVER" in the tools list, hold Down + A + B on controller 2, then press A on controller 1. One of the 12 secret "KONAMI STAFF!" messages will appear randomly each time you press A, while holding the buttons on controller 2.

Great Battle Cyber

(UNI) Ending sequence:
Press Up, Down, B, Right, Down, Up, Up, B at the title screen, then select player and start the game.

(UNI) Extra 9 lives:
Press B, Left, Left, Up, Down, A, Right, Up at the title screen, then select player and start the game.

Great Deal

(UNI) Level select:
At the stage number screen, press A + B on controller 2 to increase the current game's level.

Great Tank, Iron Tank

(UNI) Password generator:
Level Index:
Password:
Note:Smaller indexes leads to farther levels.
There is only 84 save points in game
so many of indexes leads to the same places.


Great Waldo Search, The

(UNI) Soft reset:
During the game, press Select + Start.

(UNI) Search hint:
During the game, hold A on controller 2 to scroll to the next hidden object on the screen automatically.

Great Wall, The (Sachen)

(UNI) Sound test:
At the title screen, press A on controller 1, then select the music with Left or Right.

(UNI) Extra pts.:
During the game, press A + B + Select to add 500 pts to your score.

(UNI) Easter egg:
Before the title screen appears, hold A + B + Select. When screen turns black, release the buttons and enter A + Select, B + Select, Select + Start, A + Select, B + Select, Select + Start. Message "SACHEN" will appear on the screen.

Guerilla War, Guevara

Japanese version:

(UNI) Hidden game:
Enter the Level select mode as described above. Select 5th level, then hold Up + A + B on both controllers at the same time and press Start on controller 1. Minigame "Sasuke vs. Commander", an early game by SNK, will appear.
Source: tcrf.net

Guardian Legend, The, Guardic Gaiden

(UNI) Password generator:
Items obtained #1:
 Unused
 X23:Y 8 Blue Lander
 X21:Y13 Weap 12
 X17:Y23 Weap 12
 X12:Y22 Blue Lander
 X 8:Y11 Red Lander
 X 6:Y 3 Shield
 X 0:Y 3 Power
 X 1:Y 0 Weap 12
 X12:Y 4 Power
 X16:Y12 Power
 X 8:Y13 Weap 4
Mini-bosses eliminated:
 X14:Y 9 Blue Lander
 X 4:Y11 Weap 6
 X 0:Y 6 Red Lander
 X 5:Y17 Attack
 X 1:Y14 Red Lander
 X 1:Y20 Weap 12
 X 6:Y23 Shield
 X16:Y 3 Weap 1
 X18:Y 1 Attack
 X19:Y 8 Weap 3
 X21:Y 4 Shield
 X18:Y10 Shield
 X17:Y16 Red Lander
 X16:Y18 Weap 5
 X22:Y20 Shield
 X12:Y18 Red Lander
 X12:Y22 Weap 12
 X 5:Y 3 Weap 3
 X 2:Y 0 Blue Lander
 X11:Y 4 Shield
 X12:Y 0 Weap 12
Items obtained #2:
 X 8:Y 9 Weap 1
 Unused
 X 4:Y12 Weap 11
 X 3:Y10 Weap 2
 X 3:Y14 Blue Lander
 X 0:Y 9 Power
 X 0:Y22 Shot Rate
 X 6:Y22 Red Lander
 X19:Y 6 Blue Lander
 X17:Y 2 Weap 11
 X23:Y 6 Weap 4
 X23:Y 3 Weap 5
 X18:Y12 Weap 1
 X20:Y10 Weap 6
 X19:Y19 Weap 8
 X22:Y23 Shield
 X10:Y18 Power
 X14:Y20 Weap 12
 X 3:Y 6 Blue Lander
 X 3:Y 3 Red Lander
 X12:Y12 Shot Rate
 X 2:Y17 Shot Rate
 X16:Y 0 Shot Rate
 X 9:Y19 Weap 9
 X 9:Y14 Weap 10
Shop items bought:
 X13:Y11 Weap 3
 X13:Y10 Weap 7
 X12:Y10 Weap 2
 X10:Y10 Weap 8
 X10:Y11 Weap 9
 X 1:Y18 SR/HRT/W1
 X23:Y21 SR/HRT/W3
 X18:Y 0 BL/POW/W4
 X15:Y12 RL/POW/W5
 X12:Y 5 W7/POW/W6
 Key 1
 Key 2
 Key 3
 Key 4
 Key 5
 Key 6
 Key 7
 Key 8
 Cor 1
 Cor 2
 Cor 3
 Cor 4
 Cor 5
 Cor 6
 Cor 7
 Cor 8
 Cor 9
 Cor 10
 Cor 11
 Cor 12
 Cor 13
 Cor 14
 Cor 15
 Cor 16
 Cor 17
 Cor 18
 Cor 19
 Cor 20
 
 
 
 
 Weap 1
 Weap 2
 Weap 3
 Weap 4
 Weap 5
 Weap 6
 Weap 7
 Weap 8
 Weap 9
 Weap 10
 Weap 11
 Weap 12
 EE Rounds
 Random
 Red Landers
 Max HP
 X Pos
 X Pos
 Attack
 Shield
 Shot Rate
0 Scores
USAJapan


Gun Nac

US version:

(UNI) Invulnerability:
Wait until the starting cut scene sequence is about to end and hold A + B at controller 1. Demo sequence will continue with additional graphics from the Japanese version removed from the US version and messages "DEATH & NON-DEATH FREE SELECT MODE OK!" (this will enable "Invulnerability" option in configuration menu) and "OPTION DEMO" will appear.

(UNI) Extra ending:
After game completion, when the first demo sequence is about to end, but before the credits roll, hold A + B on controller 1 to view ending sequence from the Japanese version removed in the US version. This will enable "Invulnerability" option in configuration menu as well.

Gun Sight, Laser Invasion

Japanese version:

(UNI) Secret passwords:
HARD-Hard "one-touch" mode
9PLY-Extra 9 players

Gun.Smoke

(UNI) Change controls:
At the title screen, press quickly A, B, B, Right, Right, Right, Left, Left, Left, Left, Up, Up, Up, Up, Up, Down, Down, Down, Down, Down, Down, Start. You can control the fire direction with D-Pad, instead A or B or A + B.

Hanafuda Yuukyou Den - Nagarebana Oryuu

(UNI) Gallery:
During the game, hold Up + A + B + Select on controller 1 for a couple of seconds.

Hanjuku Eiyuu

(UNI) Random towns:
At the map screen duging game, on controller 2, do the same as for the Sound test cheat, but instead of pressing Right, press Left at the end of the cheat sequence. From now, if you shout to the microphone on controller 2, the town occupations will be randomly shuffled, even if some towns was previously occupied by the same flags, they all will be randomly shuffled again to all players. This will also enables the Time speed increase and Unknown cheats at the same time. To forbid this to happed, hold Down on controller 2.

(UNI) Increase time speed:
Duging game, on controller 2, do the same as for the Sound test cheat, but instead of pressing Right, press Down at the end of the cheat sequence. Now the time will go much faster, as well as the movement speed of all enemies. If combined with the Random towns cheat, this will disable the shop events.

(UNI) Unknown:
Duging game, on controller 2, do the same as for the Sound test cheat, but instead of pressing Right, press Up at the end of the cheat sequence. Something happen when you select your last or castle with number 12. Need investigate.

Harry's Legend, Titenic

(UNI) Water level change:
Seems this is a leftover or debug feature for the "Titenic" versions of the game. During the game, press Up or Down on controller 2 to change the level of water filling the current screen.

(UNI) Call support:
During the game, on controller 2 press A to enable the selection for the supporting character. Press Left or Right to select between 4 characters, including the Harry itself. Press any other button on controller 2 to enable the supporting character. All other characters, except Harry will be CPU controlled, if Harry is selected, the controls will be synchronized with the controller 1 input, so two Harry's will be do the same moves.

Hatris

All versions:

(UNI) Harder mode:
At the title screen hold Down then press Start. Shop mode will be "SHOP Bx" instead of "SHOP Ax" for the Japanese version.

Japanese version:

(UNI) Credits:
At the title screen press Left + B + Select.

Heisei Tensai Bakabon

(UNI) Soft reset:
During the game, hold Start, then press Select.

Hell Fighter (Sachen)

(UNI) CRC test:
Hold A + B + Select + Start on controller 1, then press Reset. Continue holding these buttons, until the message with checksums for the CHR and PRG appears. For unknown reason, probably due to program or emulation bug, the CHR test check only default CHR bank, but should check the whole CHR ROM, just like the PRG ROM does. Anyway, there is no internal CRC values to campare or verify againts.

(UNI) Easter egg 1:
After the game start, while the "Sachen" logo animation in progress, hold A + B + Select + Start on controller 1. Continue holding these buttons until the logo is stand still. Release all the buttons except Select, and while holding it press A, B, Start, A, B, Start, Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start, Start, Start, Start, and finally press any other additional button to enable the "SACHEN" logo kanji scroller from bottom to the top of the screen.

(UNI) Easter egg 2:
After the game start, while the "Sachen" logo animation in progress, hold A + B + Select on controller 1 and A + B on controller 2 at the same time. Continue holding these buttons until the logo is stand still. Release all the buttons except Select on controller 1, and while holding it press A, B on controller 1, A, B on controller 2 and Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start, Start, Start, Start on controller 1 again, then press any other additional button to enable another kanji message scroller.

(UNI) Quick level restart:
During the game, hold A + B on controller 2, then press Reset to quickly restart the current level from the beginning. Note, that the default value of lives is 5 in this case and rapid fire is on.

(UNI) Extra stage select:
In the "OPTION" menu, hold A + B on controller 2 while selecting the starting level number to be able to select from all 6 levels.

Hello Kitty World

(UNI) Sound test:
Beat the game, then at the "おしまい" screen press A + B + Select + Start on controller 1. If done right, you will be able to select the music track with Up or Down, then play it by pressing A.

Hi no Tori - Houou Hen - Gaou no Bouken

(UNI) CRC test:
Hold A + B, then press Reset. If CRC is ok, a message "HINOTORI ONE" will appear, in the other hand "HINOTORI TEN" will appear.

(UNI) Extra 90 lives:
To obtain extra 90 lives, you must meet some conditions: you must hold 50 stone blocks and your score must ends with xx23450 (e.g. 0023450, 322345, etc.). Then, when the time reaches exactly 100 seconds, hold Up + Right + A + B. From now, your lives counter will be 90.

Highway Star, Rad Racer

Japanese version:

(UNI) Maximum speed:
During the game, hold Up while accelerate, your speed will reach maximum in 255 km/h.

Hissatsu Doujou Yaburi

(UNI) Invulnerability:
Hold Up + A + B + Select, then press Reset, the game skips directly to the title screen. Now, you will be invulnerable in fighting sequences during the game.

Hissatsu Shigoto Nin

(UNI) Sound test:
At the title screen, before selecting the new game or continue, press Right 32 times.

Hit Marmot

(UNI) Ending sequence:
At the title screen, press Right + A + B + Select + Start.

(UNI) Stage select:
At the title screen, press Left + A + B + Select + Start.

(UNI) Extra bullets:
Enter the Stage Select mode, then press Up + Right + A + B + Select + Start. Now you can have 99 bullets instead of 30 in normal game mode.

Hit the Ice

(UNI) Sound test:
At the title screen, the after message "PUSH START BUTTON" appears, quickly press A, Up, B, A, Right, B, A, Down, B, A, Left, B.

(UNI) Easter egg:
During the game, when beated any of the random encounter hockey battles, on the victory sequence press A + B + Start on Controller 3, connected to the 4-Score adaptor, to restart animation sequence. You could watch the girls walking to the winners unlimited amount of times with this code.

Hokuto no Ken

(UNI) Player 2 reverse controls:
At the title screen, shout to the microphone on controller 2 10 times, then hold Down + Left + A + B on controller 2 and press Start on controller 1. Start a two players game. If done right, the second player's movement controls will be reversed. This strange cheat is exactly the same as in another game by the same developer: "Nagagutsu wo Haita Neko".

Holy Diver

(UNI) Extra lives:
Start a new game, in the beginning jump right to the top of the three. Press Start on controller 1 to pause the game, hold A + B on controller 2, then press Start on controller 1 again. The lives counter will be increased each time you doing this. It is only works on the specified height coordinates, there is a lot of places with such coordinates on the level, just try and find it.

Home Alone 2 - Lost in New York

(UNI) Secret message:
Go to the 16th floor of the hotel, grab the invincibility item from the first room and enter the second room while still invincible. Make sure you have no ammo for the dart gun and press Up on the closet door. Pressing Start during the message will put you back at the beginning of level 1, but with all the items you had collected up to that point. After the message finishes, you will be warped to the next stage.
Source: tcrf.net

(UNI) Secret items:
In Level 1, in Lobby, after the Gift Shop, there is a lamp in the middle between the jumping couch and the couch to the left of it. Jump above it using the jumping couch to reveal two special items with names "BECKY" and "CHRIS". Each gives to you 1000 score points. Similar items can be found literally in every game by the same developer.

Home Run Nighter '90 - The Pennant League

(UNI) Sound test:
At the title screen, press A + B on controller 2.

Honoo no Doukyuuji - Dodge Danpei

(UNI) Secret passwords:
HEBE-Cut scene test mode. You can select one of game cut scenes to play.

Honoo no Doukyuuji - Dodge Danpei 2

(UNI) Memory dump:
Any time during the game, press Up + Down + Left + Right + A + B + Select + Start both on controller 1 and controller 2 at the same time. This will dump the $0000-$01FF and $0400-$04FF areas to the SRAM and go to the infinite loop. Probably was used at the development stage to dump internal variables.

(UNI) SRAM clear:
Hold Left + Right on controller 2, then press Reset. The screen will be pure white. It will initialise the SRAM and then wait for the memory dump keys or do nothing.

(UNI) SRAM test:
Hold Up + Down on controller 2, then press Reset. The screen will be blue if SRAM is initialized with the first one cheat. Otherwise it will be red. Then programm will wait for the memory dump keys or do nothing.

Hook

(UNI) Credits and free map:
Press Right, Up, Up, Down, Down, Right, Left, Up at the title screen. A sound will confirm correct code entry. Now press Select to view the ending credits or start a new game and select destination on map, then press B to go there immediately without level completion.

(UNI) Soft reset:
Any time during the game, on controller 2 press Left + Select + Start to reset the game.

Hoshi no Kirby - Yume no Izumi no Monogatari, Kirby's Adventure

(UNI) Soft reset:
Hold A + B + Select + Start during the game.

Hototogisu

(UNI) Disable music:
Hold A + B on controller 1, then press Reset. This will turn off the background music during the game.

(UNI) Skip to the intro:
Hold Left + A + Select + Start on controller 1, then press Reset, then release all the buttons. This will skips directly to the intro sequence.

(UNI) Repeat demo sequence:
At the title screen, when music is playing, wait for the demo sequence starts and over. When at the title screen again and the copyright logo appears on screen for a couple of seconds, quickly press Up, Up, Down, Down, Left, Right, Left, Right, B, A on controller 1 and demo sequence will start instatnly.

Hottaaman no Chitei Tanken

(UNI) Cheat commands:
At the title screen, enter one of the following cheat sequences, wait for the title screen start moving and press Start. After entering any cheat, you'll be returned to the title screen again. You can enter as many codes as you like, all effects are combined and will work at the same time. To start a new game with all enabled codes, just press Start while title screen is stand still and music is playing.
ALARBDUSU-Command menu. Show the complete cheats list with it's description. There is total 14 cheats available.
UALBRRAUD-Continue play.
LBRUADSRB-Stage Time Limit x2.
BRSALBDUD-No Jiminko enemy.
RDLASRAUB-No Magma.
DSRDAULBA-x2 Score.
BUDSADRBB-Laser Powerup.
UUBARBRAL-All items Equipped.
ALDRLBUSU-Bomb Powerup.
LBUDBLSRD-Infinite Bombs.
DBARSLRUD-Hottaaman Powerup.
RSDUBARRL-Hotsutaman +15 People.
BSRBLAUDL-Stage select.
URSDUADBL-???. If any of cheats 1-5 and 9-12 are enabled, you coulnd't see a password for the current level, this cheat seems removing that limitation.

Hu Lu Jin Gang (Nanjing, NJ039)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box, but the proper graphics or text was removed from this version of the game. This cheat can be found in a couple of Nanjing games on the same engine.

Huan Shi Lu (Nanjing, NJ034)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box, but the proper graphics or text was removed from this version of the game. This cheat can be found in a couple of Nanjing games on the same engine.

Huang Di

(UNI) Cheat mode:
At the "ASDER" logo, hold Down + Left + B + Select on controller 1, palette flashing will change. This will enable some debug features during the game. First of all, it's enabling "permanent flight" effect, when you can jump as high as you wish, just by pressing the "jump" button. Additionally, during the game press Up + B to increase your power state, which gives you more powerful weapon and an extra hit points.

Huang Jin Tai Yang (Nanjing)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Hudson Hawk

All versions:

(UNI) Infinite lives:
At the title screen, press Up, Up, Left, Left, Right, Left, Down, Select, Select. The screen flashes and sound will confirm correct code entry.
Thanks to Kitsune for corrections.

Huge Insect

(UNI) Extra live:
Pause the game, press Up + Right + A + Select to increase lives counter by 1.

Hunt for Red October, The

(UNI) Invulnerability:
Pause the game, press Up, Down, Left, Right, Up, Down, Left, Right, Up, Down, Left, Right, Up, Down, Left, Right, A, A, A, B, B, B, Select, Select, Select, Right, Right, Right, Up, Up, Up, Down, Down, Down, Left, Left, Left, A, B, B, A. The bottom of the screen will turn green. This code can only be used once per game.

(UNI) Music toggle:
Pause the game, press Select. The bottom of the screen will turn green for the REV0 version and won't change for the REV1 and European versions. Also the REV0 version only disables the music and doesn't allow to enable it back, but in the REV1 and European versions this was fixed and you can toggle the background music on/off any time.

HVC Kensa Cassette Controller Test

(UNI) Hidden game:
Hold Down + B on controller 2, then press Reset. Press the button which marked by the program as fast as possible. Try to press all correct buttons.

Hydlide 3 - Yami Kara no Houmonsha

(UNI) Sound test:
First you must complete the game. When the title screen appears again, select the "CONTINUE" option from the title menu and return to the Cemetery South-East of the game's starting point. You should be at least 7th level or should have INTELLECT at least 50th level to open the hidden passage leading to the Hidden Village. Just step before the grave in 5th column from left, and 2nd row from bottom. The secret passage will open. Enter the Hidden Village and head to the west, then step under the roof of HANGAR to the left from the INN. Menu with music titles will appear. Press any button to cycle through compositions, press B to exit.

I Love Softball

(UNI) Easter egg:
Hold B on controller 2 and A on controller 1 at the same time, then press Reset. At the title screen, press Select + Start on controller 1. Now all the players will be in a swimsuits instead of the regular uniform.

Ide Yousuke Meijin no Jissen Mahjong 2

(UNI) Secret passwords:
Enter as password in Story Mode:
いいてぶく ろいいようふく
いいはいが わたしはほしい
-Max Stats at Start
おかねほし いおかねほしい
これであな たもおかねもち
-200,000 Money, Max Stats, and All Equipment
おかねほし いもつとほしい
にじゆうま んぐらいほしい
-80,000 Money

Idol Shisen Mahjong, Tiles of Fate

Hacker version:

(UNI) Picture view and Level select:
At the stage number screen, press Select, A, B. The music will start playing. Press A or B to select the stage number from 1 to 21, press Start to view the stage's final image. Press Start to return back to the stage number screen, where you can now can play a selected stage or enter the cheat one more time and select another stage.

AVE version:

(UNI) Level select:
At the stage number screen, press Select, A, A, B, B, B, A, A, B, B, B, A, B, A, B. The different music will start playing. Press A or B to select the stage number up to 7-1, and press Start play it.

Ike Ike! Nekketsu Hockey Bu - Subette Koronde Dai Rantou

(UNI) Secret passwords:
7031-Sound test
4728-Harder scenario
Source: Johnny Undaunted

Ikinari Musician

(UNI) Musc speed select:
At the music board, put the cursor at the speed multiplier, then hold Down and press Start to set the music speed at half of the normal. Hold Up at any music board control and press Start to return speed back to normal.

(UNI) Different notes visualization:
At the music board there is three diferent notes visualization is available: by displaying the notes in notes window, with a bobbles of different colors popping up from the key cursor position and by displaying the rabbits in notes window. Modes can be selected with blue flashing button at the top-right. Select the bubbles mode (slow flashing blue bubble, once pressed), then hold Right then press Start to switch bubbles to alphabet letters.

Immortal, The

(UNI) Password generator:
Hitpoints:
Level:
Power:
Inventory
 Usual:
 Special:
Gold:X10
Password:


Incredible Crash Dummies, The

(UNI) Level select:
Press Right, Right, Up, Left, Up, Right, Down, B, A, Select at the title screen. A sound will confirm correct code entry.

Indiana Jones and the Last Crusade (UBI Soft)

(UNI) Password generator:
Level:
Score:
Whip:
Gun:
Random1:
Random2:
Password:


Insector X

(UNI) Secret message:
Enter to the "OPTION MODE" menu, move cursor to "EXIT" option then press Right 35 times and then press Left once. A message "PRGD. BY JYOJI HIRAYAMA" will appear.

(UNI) Level select and no hit mode:
Enter to the "OPTION MODE" menu, move cursor to "EXIT" option and press Left, then exit options menu and start the new game. At the "PLAYER SELECT" menu press Up to select level and Down to toggle between "HIT" and "NOT" options, which means normal mode and invincibility accordingly.

International Cricket

(UNI) Sound test:
Immediately after power on or right before it hold A + Select + Start on controller 2. Continue holding it while copyright screen is displayed. The cheat triggering depends on how long you holding these buttons. The whole time from power on to title screen will take $FA cycles, you need to hold mentioned combination not less than $E1 cycles. Then Sound Test mode will appear.

(UNI) Secret message:
Enter the "Sound test" mode as described above. Play any "Sample" (25-29). Select "Off" (0) then press Select, Select, Select on controller 2. Message "SUE ANDERSON: A GURU FOR THE NINTIES" appears.

(UNI) The Beam team:
Enter the "Sound test" mode as described above. Select "Off" (0) and press A ten times, slowly. A sound will confirm correct code entry. Press Start to back to the game. From now you can choose hidden 9th team with name "The Beam Team" in any mode with team selection menu. Beam team have funny names for players and all team are green-skinned, like tru programmers. ;)

(UNI) Screwed delivery:
Enter the "Sound test" mode as described above. Select "Theme" with number 10 and press A ten times. After tenth pressing music will stop confirms correct code enty. Press Start to back to the game. Now you can choose extra delivery method with highly screwed ball. On delivery selection screen hold Down to choose "Short" delivery and press A or B to select fast or medium bowler. Instead of short delivery you will be able to throw uncatchable ball.

Ironsword - Wizards & Warriors II

(UNI) Extra 255 continue:
At the title screen, hold Up on both controllers, then press Start on controller 1.

(UNI) Bonus chance cheat:
At the title screen, hold Up + B + Select then press Start on controller 1. You can play in bonus chance game at any shop without loosing, because of known game behavior. The skull will fall into the cups in the following order: 1, 4, 3, 2, 1, 4, 3, 2, etc. So you can win 12000 gold.

Isolated Warrior, Max Warrior - Wakusei Kaigenrei

(UNI) Secret passwords:
Using any of these passwords will lock you out of stage 7 (continue flag $06C8=01).
6502-Full HP and bombs
6285-Full weapon power
6666-1 HP
5350-Invalid, no effect (password routine bug; should stop checking at 6666)
Source: BMF54123

Itadaki Street - Watashi no Mise ni Yottette

(UNI) Sound test:
At the title screen, hold Up + Select then press Start. Screen with copyright message "all songs written by t.ueno programmed by ohmorita" will appears. Each song has it's name.

Jajamaru Gekimaden - Maboroshi no Kinmajou

(UNI) Sound test:
At the very end of the game, enter the village by the sea (use the secret name trick to reach the final boss, loose and you'll appear at exactly needed village), reach the 4th screen of the town and enter the lower-left house (it should be empty). Once inside, press Up, Down, Up, Down, B, Left, Right, Right, Left on controller 2. Leave the house and come back in again. If done right, there will be a blue ninja, when you press A on it, the bacgroung music will change, cycling throught all game music.

(UNI) Secret words:
Enter one of the following words as a player name during new save slot creation. Any slot can be selected. Additionally, for all names except for the first one, B on controller 2 should be held before the intro sequence is over. Note, that some names starts with the space character denoted as "_" in following table.
_かわいい_たくらみ-The final battle. No matter if you win it of loose, when you return back to the map, the game will over and you can see the ending.Info from ReyVGM
みこちゃん-Infinite items.
しのふ゛をち-Infinite items.
し゛ゅんちゃん-Debug name, gives to you an infinite items and your weapon will be all powered up. Also, allows you to skip action levels on map, just hold B and move through the map. Additionally this cheat allows you to see all game locations. Enter the map mode, press Select. The number in the middle of HUD will display current location index. Press Up or Down to change it, press A to apply changes, now the number will display current sublocation index. Change it the same way, press A to advance to selected location. Unfortunately, the screen won't update automatically, in order to see the new location, enter the game menu and return back. Be careful, some indexes aren't correct and can hang the game or you couldn't exit it at all.
ひめりん-Infinite items and your weapon will be all powered up. Also, allows you to skip action levels on map, just hold B and move through the map.Info from ReyVGM

Jajamaru Ninpou Chou, Taro's Quest (Prototype)

Prototype version:

(UNI) Scenario warp:
Start a new game. During the intro breifing, hold B on controller 2 to start with Hanna from second part of scenario. In the Japanese version ths can be done with simple scenario selection at the game start.

Jangou

(UNI) SRAM clear:
Hold Up + Start, before the title screen appears, or just press Reset.

(UNI) Pause mode:
Hold B + Start, before the title screen appears, or just press Reset. In this mode, all players can make the moves, only after any button is pressed by the player, so you have a lot of time to think during game.

Jarinko Chie - Bakudan Musume no Shiawase Sagashi

(UNI) Disabled cheat:
Press Up, Up, Down, Down, Left, Right, Left, Right, B, A at the title screen, a sound will confirm correct code entry. Does nothing.

Jaws

(UNI) Sound test:
Hold Up + Left + B on controller 2, then press Reset. At the title screen, on controller 1 press Left/Right to increase/decrease sample index by 1, press Up/Down to increase/decrease sample index by $10. Press A to play sample, press B to stop playing.

(UNI) Cheat mode:
Enter the Sound test cheat. During the game, enter pause mode, then hold one of the following buttons on controller 2 and exit pause mode to get corresponding effects:
A-For the map mode: enter "You've hit Jaws!" instantly.
For the diving mode: exit diving instantly.
B-For the map mode: enter "You've hit something!" instantly.
For the diving mode: kill Jaws instantly and go to the boss fight.
A + B-For the diving mode only: get extra 9 lives.

Jesus - Kyoufu no Bio Monster

(UNI) Secret passwords:
ふあみこん せいさくの なかまたち みせてくれ-Secret staff message. First, a normal staff roll appears, then a secret staff roll will be displayed.
もつくんは わかままて れいさろん ひきたかる-Piano mini game. You can play simple melodies by pressing piano keys.
はいもとの えみさんへ とくさんの よめにこい-The same as previous, but with extra palette edit mode.
たくりんは おんかくか ききたいと ないてるし-Sound test with pictures. Each melody assigned to according game picture and have name in Japanese.
さりゆくも のたちきら めくひとみ そらのはて-The same as previous.

Jia A Fung Yun (Waixing)

(UNI) Hidden credits:
At the title screen, press A, B, Up, Down, A, A, B, Start.

Jigoku Gokuraku Maru, Kabuki - Quantum Fighter

All versions:

(UNI) Level select:
At the title screen, on controller 2 press A 8 times, B 4 times, Right 16 times, then press Start. This also activates a debug mode of sorts. During the game play, Up and Down on controller 2 can be used to alter the player's chip levels, and pressing A on controller 2 will skip the level.
Source: BMF54123

US version:

(UNI) Sound test:
Additionally to the ending screen, the Sound Test mode can be enabled at the game start. At the HAL logo, when animation stops, press Down + B + Select.

Jikuu Yuuden - Debias

(UNI) Secret passwords:
ふりきちすとoけoつぬつらえもすはひりはへoよくすはひりむけつ゛-Debug Mode.

Jin Yong Qun Xia Zhuan - Shu Jian Jiang Shan (Nanjing, NJ031)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Jing Ke Xin Zhuan

(UNI) Soft reset:
During the game, press Select + Start.

(UNI) Maximum stats:
At the title screen, press Down, Down, A, Up, Up, B, Left, Right, Select. Now, very time you press A during the game play, you'll renew HP/MP and exp parameters at its maximum.

(UNI) Debug cheat:
During the game, press Select, Select, B, Right, Right, Select, a sound will confirm correct code entry. You can now free walk on any maps, as well this will disable the random encounters. Press Start to disable this cheat back or press B, B, B to warp directly to the end of the game (the clothes will change and your wife is coming).

(UNI) Instant kill:
During the fight sequences, press Down, Up, Up, Down, Left, Left. Now press Select to instantly kill your enemy.

Journey to the West (Micro Genius)

(UNI) Invulnerability:
At the title screen, press Select, Up, Select, Down, Select, Left, Select, A.

(UNI) Ending sequence:
At the title screen, press Select, Up, Select, Down, Select, Left, Select, B and start a new game.

(UNI) Stage select:
At the title screen, press Select, Up, Select, Down, Select, Left, Select, Right.

Jovial Race

(UNI) Extra 29 lives:
At the title screen, after two car crashes, press A, B, Up, Down, Up, Down, B, A, then any other button except A and Start.

(UNI) Stage select:
At the title menu, press Up, A, Down, A, Left, B, Down, A, Right, A, Left, B, A, then any other button except A and Start. Press A or B to change the stage number by 5 up to 46.

Jumbo Ozaki no Hole in One Professional

(UNI) Twice strike power:
During the game, press B to select the close view of the hole. Hold Up + Left on controller 1, then press Down + Right on controller 2 a small number will appear to the left of the player character. A Number "2" means the cheat is on, "1" means the cheat if off. If enabled, every time you beat the ball, it will fly a lot more farther than usual, due to strike power increased twice.

Juuryoku Soukou Metal Storm, Metal Storm

(UNI) Gravity switch control:
During the game, hold Select then press Start, Start to toggle between two modes of the gravity control switch. In the first mode, you need to press D-Pad in the same direction you want to switch gravity. In the second mode, you need to press D-Pad in the opposite direction.

Kaettekita! Gunjin Shougi - Nanya Sore!

(UNI) Manual debug display:
At the title screen, highlight the "1PLAY" option, then hold Right + A + B on controller 2 and press A or Start on controller 1 or wait for the demo sequence is started. During single player game or the demo sequence, a small number will be displayed at the center of the screen before enemy's turn, representing some enemy's parameters. Also, hold B on controller 2, then press B on controller 1 to switch on or off the enemy's names.

(UNI) Auto debug display:
Do the same as for Manual debug display cheat, but additionally hold B before press A, or hold A + B before press Start or before the demo sequence is start. Before every player's turn the names of the enemies will be switched on automatically and switched off before the enemy's turn as well. The small number appears the same.

Kagerou Densetsu

(UNI) Full equip:
Open the menu on the world map, put the cursor over the "CHARACTER" option, then hold Down + B on controller 2 and Up on controller 1 then press on controller 1 A.

(UNI) RAM test:
Hold Up + Down + Left + Right on controller 2 and press Reset, screen will be blue, then press A. The program is testing for $7F80=$55, $7FFF=$AA and all data between these addresses are zero. If all ok , the screen will flash with green screen and game continue as usual, if not, screen will be red and game will freeze. Similar tests can be found is some Taito games with specific mappers. Why this game uses the same type of tests is unknown.

Kaiketsu Yanchamaru 2 - Karakuri Land

(UNI) Sound test:
At the title screen, press B + Select.

Kame no Ongaeshi - Urashima Densetsu, Xexyz

(UNI) Full power and speed in even levels:
At the beginning of the flight levels with bosses (areas 2-1, 4-1, etc.), there is a little pause before you start to play, when you just sit on the entry door for a couple of seconds. During this time, hold Select, then quickly press Up, Down, Right, Left. If done correctly, you'll obtain a maximum power and speed instantly.

Kamen Rider SD - Guranshokkaa no Yabou

(UNI) Ending sequence:
Hold Right + B, then press Reset.

Karaoke Studio, Karaoke Studio Senyou Cassette Vol 1, Karaoke Studio Senyou Cassette Vol 2

(UNI) Microphone test:
Hold A + B on controller 2, then press Reset. Press A on controller 1 to hear a tone, press B to change the screen color.

Kero Kero Keroppi no Daibouken 2 - Donuts Ike ha Oosawagi!

(UNI) Level select:
At the title screen, hold Select, then press Up, Up, Down, Right. A sound will confirm correct code entry, also the "PUSH START BUTTON" message will turns green. Now during the game, press Start to pause the game, press A to increase level number up to 13 or B to decrease level number. Unpause the game to jump straight to the selected level.

Keroppi to Keroriinu no Splash Bomb!

(UNI) Secret passwords:
さうんと゛をきく-Sound test
らすとた゛けみる-Ending Sequence
れいくんけ゛えむ-Rei-kun Game. Hold any of following buttons or its combinations on controller 2: A or B or Up or Left, before entering this password to enable some kind of paper-scissors-rock mini-game.

(UNI) Password generator:
Note, the password system allows to store some parameters which cannot be generated by the game (radius can't be higher than 3). This leads to the glitch passowrds, which doesn't allow the correct password generation further during the game if used.
Also note: the password system has a bug causing the game can't generate the passwords with symbols "゛゜", this bug has a workaround in the code, so such passwords cannot be generated at all. Still, you can use these symbols when generating the password and they will be decoded correctly. This also can be allowed with the "Glitch pass" checkbox.
Players number:
Stage:
Random:
BombsRadius
1P:
2P:
Glitch pass:
Password:


Kick Master

(UNI) Password generator:
Level:Glitch:
Sector:
Lives: note: 0 means 3!
Quest:
Magic:

MP:
Random:
Password:

Thanks to Awl for corrections.

(UNI) Secret passwords:
K!N!!! L!BB!?-Debug room
L!W!!G !M!N!?-Enable player's level selecting. Just press B at Spell selecting screen.

Kid Icarus

(UNI) Password generator:
Bits:
















Password:


King Kong 2 - Ikari no Megaton Punch

(UNI) Level select:
At the title screen, press Right, Left, Right, Left, B, A, Up, Down, Up, Down, then press any other button before pressing Start. During the game you can press A on controller 2 to switch level or B to hold a game.

(UNI) Secret message:
After beating the game, when THE "STAFF" roll is about to over, before messages "PRESS START BUTTON" and "PLAY TIME" appears, hold A + B. Another message appears, depending of how much hours in total you've played. There are total 24 messages:
0 Hours-KIMI WA TENSAIDA 573
1 Hours-NAKANAKA NO MONDA 291
2 Hours-TAMANI WA KYUKEIO 999
3 Hours-YOKU KOKOMADE KORETANO 450
4 Hours-GOKUROUSAN 5963
5 Hours-6 JIKANMO SURUTOWA 606
6 Hours-7 JIKANMO YATSUTANOKA 778
7 Hours-YATSUPARI TENSAI...444
8 Hours-KURUSHIKUTEMO GAMAN 964
9 Hours-KIMI WA ERAI 747
10 Hours-KONO JIKAN OBENGAKUNI 555
11 Hours-HAYAKU NENASAI 889
12 Hours-TADAMONO DEWA NAINA 046
13 Hours-MOU 14 JIKAN 140
14 Hours-SHIKUDAI YATSUTAKANA 498
15 Hours-KONG WA SAIKOU 7777
16 Hours-KING KONG WA OMOSHIROI 321
17 Hours-ICHIKA BACHIKA OWARINA 180
18 Hours-KONG WA KIMIGA SUKIDA 375
19 Hours-HA-A 8080
20 Hours-TENSAI WA KUSAI 931
21 Hours-IMA WA NANJI DAROU
22 Hours-ATO 1 JIKANDE 1 NICHI 1111
23 Hours-KIMIMO SHITSUKOINA 4517

(UNI) CRC test:
Hold A + B, then press Reset. A "KINGKONG" string stands for the PRG ROM checking, a "KONAMI" string stands for the CHR ROM checking. "ONE" means test is OK, "TEN" means test has failed.

King Neptune's Adventure

(UNI) Cheat mode:
During the game, hold Up + A on controller 1 and Up on controller 2 then press B on controller 1. From now, bubble bombs will be unlimited. Additionally hold B, then press Select to skip current level. Hold A, then press Select to enable unlimited lives.

King of Fighters 96

(UNI) JY company's Easter egg:
At the title screen, press Down, Down, Left, Up, Right, Left, Up, Down.

King of Kings

(UNI) Secret words:
At the game save screen select 4th slot, then enter as name "オオタニ トモコ" (Ootani Tomoko) or "アヘ゛ ヒロミ" (Abe Hiromi) then before entering "オワリ" option hold A or B or both on controller 2. Name of save record will be now "ILOVEYOU".

Kinnikuman - Muscle Tag Match, M.U.S.C.L.E.

(UNI) Round select:
At the wrestler selection screen, hold A + B on controller 2 and B on controller 1 at the same, then press Up or Down on controller 2 time to increase or decrease round number accordingly.

Klash Ball

(UNI) Sound test:
At the title screen, when message "push start button" appears, press Down + A + B + Start on controller 1 and Right + B on controller 2 at the same time.

(UNI) Music test:
Hold Right on controller 2, then press Reset.

Knight Rider

US version:

(UNI) Secret password:
MIYAZAWASAKAI-Enter the Level select mode, which can be accessed as well with button code above.

Koushien

(UNI) Secret team:
Hold A on controller 1, then press Reset. While demo cut scene is rolling, before the title screen appears, press Up, Up, Down, Down, Left, Right, Left, Right, B, A on controller 1. Select one or two player mode, the first player's default home place will be "東西南北" or Touzainanboku (East, West, South and North) and team name will be "こうしえん高校" or Kuoshien koukou (Koushien senior high school).

Krion Conquest, The, Magical Doropie

Japanese version:

(UNI) Extra character 1:
At the title screen, press Up, Down, Up, Down, Left, Right on controller 2, then on controller 1 hold Select and press Start. After game starts main player character will change to male character.

(UNI) Extra character 2:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, A, B, A, B on controller 2, then on controller 1 hold Select and press Start. After the game begins, the main character will change to male.

(UNI) Level select:
At the title screen, press Up, Down, Up, Down, Left, Right on controller 2, then on controller 1 hold Select and press A. Press Up or Down to change level number, press Left or Right to select between level and sublevel index. Press B to reset level number. Press A or Select to start new level. Level 5-4 actually doesn't exist. After some animation sequence you will be in the middle of nowhere.

(UNI) Invulnerability:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, A, B, A, B on controller 2, then on controller 1 hold Select and press A.

Krusty's Fun House

(UNI) RAM clear:
Hold B on controller 1, then press Reset to reinit game's memory. This will reset all scores and entered passwords, which otherwise won't be erased until power off.

Kujaku Ou 2

(UNI) Sound test:
At the title screen, hold A + B then press Start.

Kunio-kun no Nekketsu Soccer League

(UNI) Sound test:
On the Waiting Room screen (before the match), choose "おうえん きょく" ("Select BGM"), and then put cursor to the 6th option "ねっけつFCの てーま", hold Left and press Select.
Source: tcrf.net

Kurogane Hiroshi no Yosou Daisuki! - Kachiuma Densetsu

(UNI) SRAM clear:
Enter the third option at the title menu (Backup Data), hold A + B on controller 2, then press Start on controller 1. All saved games will be erased.

Kyatto Ninden Teyandee

(UNI) Sound test:
At the title screen, hold A + B + Select and press Start on controller 1.

(UNI) Main character select:
There are three main characters in the game. Normally, you can select only one of them to play before every Round. Pause the game, hold A + B on controller 2 and press Select on controller 1 to cycle between main characters. Deselect and select the main character in the Pause menu to apply the changes.

Kyonshiizu 2

(UNI) Extra 100000 money:
Any time during the game, when you need a money, go to the Temple (the very first building where you appear at the game start and where you can sleep). This trick is working only during noon (reddish), so you must wait until it comes (not be mistaken with morning, which is reddish too, but appears after a night). Stand under the gate's roof, so you should be completely hidden with it. Pause the game and press Down + A + B on controller 2. Now unpause and enter the Temple. Select "Oyasumi" ("Sleep") option, if all done right, before you get to sleep, you'll obtain an extra 100000 money. This trick can be done multiple times. If you doesn't want to wait too long for the evening, while staying under the roof in pause mode, press Select to switch to the next part of day immediately. If currently is a day, press Select once, if night or morning, you must press it 3 or 2 times accordingly.

(UNI) SRAM clear:
Hold Up + Down + Left + Right on controller 2 then press Reset. Now, the program is waiting for A on controller 1 to be pressed. When you press it, if SRAM is properly initialized, a message "WORK RAM INIT OK" will be displayed all along with the "PROM OK!" and "CROM OK!" messages for a very short time. In other case, you'll see a message "WORK RAM NO INIT. BUSH B" and then "PLEASE SET POWER OFF" when B is pressed and WRAM is initialized. CRC tests for the PROM/CROM data is performed at the game's boot automatically, so if you can reach this WRAM test, it's mean, that tests are passed. Instead, if one of PROM/CROM data is damaged, the messages "PROM ERROR" or "CROM ERROR" will be displayed.

Kyuukyoku Harikiri Koushien

(UNI) Debug menu:
At the main game menu, enter the last option. In the new menu, point cursor to the last option again and press Select.

(UNI) Skip to 6th round:
At the PLAYBALL!! screen, hold Left + Select. When the game starts, a sound will confirm correct code entry. Now you'll start from 6th round.

(UNI) CRC test:
Hold Up + Down + Left + Right on controller 2, then press Reset. Game will perform a self-testing for the PRG, CHR ROMs and a SRAM test.

Kyuukyoku Harikiri Stadium

(UNI) WRAM test:
Hold Up + Down + Left + Right on controller 2, then press Reset. The screen will remain blue until you press A on controller 1. Then simple WRAM test will be performed. If data isn't match (from $7F80 to $7FFF, first byte is $55, last is $AA, the rest is $00), then "NG" on the pink background will be displayed and held. If match, then "OK" will be displayed for a short time on the green background and game continues to boot as usual.

Kyuukyoku Harikiri Stadium - Heisei Gannen Han

(UNI) WRAM test:
Hold Up + Down + Left + Right on controller 2, then press Reset. The screen will remain black until you press A on controller 1. Then simple WRAM test and init will be performed. If WRAM wasn't initialized, then "NG" on the red screen and then "OFF" will be displayed and held. After initialization, "OK" will be displayed for a short time on the green screen and the game continues to boot as usual.

Kyuukyoku Harikiri Stadium 3

(UNI) Field madness:
When a right-handed catcher gets DEADBALL from the pitcher, quickly hold Up + A + B on controller 1. Team gets mad and going to FIGHT!

(UNI) WRAM test:
Hold Up + Down + Left + Right on controller 2, then press Reset. The screen will remain black until you press A on controller 1. Then simple WRAM test and init will be performed. If WRAM wasn't initialized, then "NG" on the red screen and then "POWER OFF" will be displayed and held. After initialization, "OK" will be displayed for a short time on the green screen and the game continues to boot as usual.

Lagrange Point

(UNI) Unknown:
During the game, before speaking with certain characters (mostly those who joins you), hold Select on controller 1 and A + B on controller 2 at the same time, then press A on controller 1. This will alter some parameters, calculated before the conversation. Meaning is unknown. For example, you can do it when first meet Dennis at the game's beginning. The meaning of such calculations is unknown.

Last Armageddon

(UNI) Movement speed select:
During the game, while walking on the map, press Up + B to switch between slow and fast movement.

Last Ninja, The

(UNI) Cheat mode:
Start a new game, get the key from the garden gate, go outside and find a shuriken weapon, return to the garden gate, open it and go to the next location with a river and a floating boat. Stand at the left corner of the square between bush and bench, turn face to the leftmost tree at this location, switch weapon to shurikens and throw them into the same direction. When 1 shuriken is left, a sound will confirm trigger switching. Then you should jump into the river and die 6 times, so keep all your lives before this place! After the game over screen you'll see the message "Isn't that lucky? You've got CHEAT POWER". Now start a new game again and follow instructions.

Layla

(UNI) Secret passwords:
Password-Pistol|Machine
Gun
|Grenade|Flame
Thrower
|Axe|Grenade
Launcher
|Knife|Shield|?|Speed|Level|Keys|Iris
ONOMATSUNONAKAJIMA-10|100|50|50|50|50|50|50|5|5|||no
AHK0TINAMS1RIALYAL-10|||||||||1|||no
MANTOINUMONKUNEKOO-1|||||||||1|7||no
147147147147147147-1||147||147||147|||1||1, 4, 7|no
KAKUSHIKOMANDODAZO-2|||||||||2|3||no
NUKENINHAVOLGUARD2-1|||||200||||9||1-4|no
OPUSYONHAIRISDESU0-1|||||||||1|||yes
CAKEICERINGOKOHRII-1|||||||||1||1-7|no
MUTEKIKAMOSHIRENAI-1|||||||255||1|||no
0123456789ABCDEFGQ-3|30|5|200|20|100|15|2||5|2||no
MAHOUTUKAISARINANO-1||||||||255|1|||no
IRUKIBOMOTIHONODNI-1|||||||||1|||no

Legend of Prince Valiant, The

(UNI) Cheat mode:
Wait for the title screen is showed up after the initial copyright screen at the game's boot. Now, any time during demo loop, press Select, Up, Left, Right, Down, Left. The screen will turn b/w for a short time. This will enable the invulnerability during the game, as well as level skip cheat. Press Down + B + Select to instantly complete current level.

Legends of the Diamond

(UNI) Sound test:
At the "BANDAI" logo screen, hold B on controller 1, then press Right + A on controller 2.

Lei Dian Huang Bi Ka Qiu Chuan Shuo (Nanjing, NJ046)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Lethal Weapon (Taiwan)

(UNI) Invulnerability:
At the title screen, press Up + Left + A + B + Select. A sound will confirm correct code entry.

Liang Shan Ying Xiong (Nanjing, NJ023)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Linus Spacehead's Cosmic Crusade, Cosmic Spacehead

(UNI) Soft reset:
Press A + B + Select + Start on controller 1.

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Lion King, The

(UNI) Invulnerability:
First, set the "SKILL" level in the options menu as "COB". Start a new game, complete the first round, collect one bonus bug in the second round, complete the second round with exactly 2 lives left. Pause the bonus game and press B, A, Right, Down. If done right, the bonus game will continue automatically. Finish it, no matter if you win or loose. Now, at the third stage loose the rest of your lives. Select "NO" option at the "CONTINUE" screen and return to the title screen. Now start a new game, and you will be invulnerable.

(UNI) Easter egg:
Do the Invulnerability cheat. Highlight the "OPTIONS" menu item, hold Left and press A. Or if you already in the options menu, select any option except "EXIT", hold Up or Left or borh and press A. The skill name will change to "BOY LOVE".

Little Magic

(UNI) Cheat mode:
At the Data East copyright screen, before the title screen appears, hold A + B on controller 1 and controller 2 at the same time. From now, you can turn the CPU controlled opponent to the manual controlled opponent by player 2. To do that, just press Select during opponent's turn. Additionally, you'll be allowed to change any battle settings during battle, which is impossible in normal play, as well as select CPU vs CPU battle mode, inaccessible in normal game.

Little Mermaid - Ningyo Hime, Little Mermaid, The

(UNI) Invulnerability:
At the title screen, hold Right + A + B on controller 2, then press Start on controller 1. Select "NO DAMAGE" to enable invulnerability.

Little Ninja Brothers, Super Chinese 2 - Dragon Kid

(UNI) Debug mode:
Hold Right + A + Select + Start, then press Reset. Now, during the game, while walking on the map, hold Start to disable random encounters. While walking on any stages, including in fighting mode, hold Select to free move throught the obstacles. In the Field Meeting mode this enables the CPU control for both players, so field meeting will play automatically.

Little Samson, Seirei Densetsu Lickle

(UNI) Restore energy:
At very end of the game on Normal mode, when the dark castle have arrived, at the screen with the castle image and a flashing lightings, press Up, Down, Up, Down, Right, Left, Right, Left, A, B, A, B.

Locksmith

(UNI) Secret copyright:
Any time during the game, press A, B, B, Select, A, B, Select, B, A, Select.

Loopz

(UNI) Soft reset:
During the game, press A + B + Select to immediately return back to the title screen.

Lost Word of Jenny

(UNI) All keys:
At the title screen, press Start and wait until the pumpkin carriage stops in the center of the screen. At that right moment, press Select once, then Down, Right, B, Left, Right, A, Up, Down, A, Left, Up, B.

Lunar Ball, Lunar Pool

All versions:

(UNI) Easter egg:
Press Reset 10 times. Now, at the game over screen you'll hear a different music.

US version:

(UNI) Round skip:
Press Reset 58 times. Now, during the game press Select to skip current round.

Lupin Sansei - Pandora no Isan

(UNI) Level warps:
At the title screen, press one of the following button codes:
Up, Down, Left, Right, B, A-Level 2
Left, Right, Up, Down, A, B-Level 3
Down, Up, Right, Left, A, A-Level 4

Magic Bubble, Mermaids of Atlantis, Bubble Bath Babes, Soap Panic

Early versions:

(UNI) Level select:
Start a new game, while the "STAGE x-x" message is displaying on the screen, press Start to pause the game, then press Up, Right, Down, Left. From now you can change the level and sublevel numbers by pressing B and A accordingly. Press Start to end level editing, then press Start again to unpause and begin to play from the selected level.

Later versions:

(UNI) Ending sequence:
At the title screen, press Select then press Up, Up, Down, Down, Left, Left, Right, Right, A, A, B, B.

Magic Candle, The

(UNI) Sound test and debug mode:
Hold Up + Right + A + B on controller 2 and Up + Right + A + B + Select + Start on controller 1 then press Reset. Use Left or Right on controller 1 to select music and Left or Right on controller 2 to select sounds. Press any other buttons to exit back to the game. This cheat additionally enables the debug mode. Now, during the travel mode, on controller 2 press A to add 1000 gold, press B to advance to the next level. Additionally, when you start a new game, before exit the name entry screen, hold one of the following buttons on controller 2 to start from corresponding chapter:
A-Chapter 1
B-Chapter 2
Right-Chapter 3
Left-Chapter 4
Up-Final Chapter

Magic Darts

(UNI) Program version:
Hold Select at the "SELECT YOUR GAME!" menu until message "VERSION 01.02" appears.

(UNI) Secret message:
At the title screen, hold A + B, press Start to enter "SELECT YOUR GAME!" menu, do not release A + B and hold additionally Select until message "BY K1 NAKANISHI" appears.

Magic Jewelry

(UNI) Easter egg:
At the game over screen, hold Right + Select then press Start to see the developer's logo screen.

Magic Jewelry 2

(UNI) Easter egg 1:
Hold Up + A + Select on controller 1, then press Reset, to see the developer's name "Hwang Shinwei" in chinese.
Source: BMF54123

(UNI) Easter egg 2:
At the second title screen (with a player number selection), any time during the game, hold Down + Left + A on controller 1 and press Select to see the publisher company logo.

(UNI) Easter egg 3:
At the second title screen (with a player number selection), only after the setup screen, hold Up + A + B + Select on controller 1, then press Start to see the full publisher logo and company name both in english and chinese.
Source: BMF54123

Magic Mathematics (Sachen)

(UNI) Secret message:
Start a new game in any mode, after the current question is written on the screen and programm is waiting for your answer, press Up, Up, Up, A, A, A, Down, Down, Down, B, B, B, Left, Left, Right, Right on controller 2 . A secret copyright message will appear.

Magnum Kiki Ippatsu - Empire City - 1931

(UNI) Secret passwords:
8E3B, A57D-Level select and invincibility. Select "CONTINUE" option, enter the first password, press Start, repeat with second password. Now, at the main menu, press A to increase level number up to 5, press B to increase sublevel number up to 8, press Start at the "START" option to begin game from selected level with invincibility.

(UNI) Password generator:
Stage:
Random:
Password:


Mahjan Samit Kabukicho Hen (Sachen), Mahjong World (Sachen)

Sachen-Hacker version:

(UNI) Tile select:
At the opponent selection screen, press A, A, B, Right, A, Left, B, Down, A, Up, then start a new game. During the game, press A to enable the tile select mode, press Up or Down to select a tile, press B to pick selected tile. The "Sachen"-only version of this game still checks for this cheat at the adult warning screen (third game option), but does nothing, even if you enter the correct code. The "Sachen-FC" version have this cheat completely removed.

Mahjang Companion (Sachen)

All versions:

(UNI) Tile select:
At the opponent select screen, press A, A, B, Right, A, Left, B, Down, A, Up, then start a new game. During the game, press A to enable the tile select mode, press Up or Down to select a tile, press B to pick selected tile.

Sachen version:

(UNI) Easter egg:
During the game, at the player's turn, press A, A, B, Right, A, Left, B, Down, A, Up on controller 2. Note, that this easter doesn't work if you enter the "Tile select" cheat first.

Mahjong Academy (Sachen)

(UNI) Slideshow:
At the opponent selection screen, hold Select + Start on controller 2 and Select on controller 1 at the same time, then press Start on controller 1.

Mahjong Club - Nagatachou

(UNI) Autoplay menu:
In any game mode, using the 4-Player adaptor for the Famicom, during the opponents turn, hold Up + Down + B on Controller 3 for a short time, then release the buttons. A menu with two options will appear, first option allows you to open all players tiles, the second option enables the autoplay mode, where all players including you will be CPU controlled.

(UNI) Extra Pts and points:
In the main game mode (first menu option), after every round you can trade some Pts in the special Shop for tickets. When asked, if you want to buy tickets, select "Yes" and press A, then immediately hold Up + Down + B on Controller 3, using the 4-Player adaptor. If done right, when the Shopkeeper appears, you'll get 300000 Pts and 270 tickets, and you can play the final round against most skilled players.

Mahjong RPG Dora Dora Dora

(UNI) Tile select:
During mahjong battles, while selecting tile to discard from hand, hold A or B on controller 2 then press Select on controller 1 to change the rightmost tile to any you need.

Mahjong Taikai

(UNI) Cheat mode:
At the title screen or at the KOEI copyrights, hold Down + A + B on controller 2, then press Select on controller 1. This will set your level to 7 before the game. When you select to save the game, all players will obtain $9,999, including you, and you can continue the game. During the game, press Select and using the D-Pad buttons change any tile in your hand to any other. Enter the game menu and press Select to view the opponent's tiles.

Mahjong Taisen

(UNI) Faster animations:
Every screen transition in this game fades-in and fades-out the display with some speed. If you hold at least one of A or B or any D-Pad buttons on controller 2, the display will fades 4 times faster during screen stansitions. Additionally, B on controller 2 will speed up some cutscene animations during the game or the intro.

(UNI) Clear game statistic:
Every mahjong round, the game collects some info about number of rounds played, points won and other statistic. This statistic will be saved until the battery on cartridge is dead, no matter if you save or load other games, or start a new one. However, you can clear this statistic. Just before starting a new game at the title menu, hold Right + B + Start on controller 1. Unfortunately, there is no use of this statistic in this game at all, so itself it's useless.

Mahou no Princess Minky Momo - Remember Dream

(UNI) Secret passwords:
おねかいーきいて♥-Start a new game with all minigames enabled at the Game Center, including the final boss minigame, which is normally can't be accesible there and replaces the Fortune Teller minigame.

Majaventure - Mahjong Senki

(UNI) Cheat menus:
At the title screen, press Select to highlight the "CONTINUE" menu option. Hold Up + Select (the menu cursor should return back to the "START" option) and press Start to enter the stage select menu. Hold Select again and press Start to enter the enemy select menu, and finally hold Select then press Start to enter the sound test menu.

Majou Densetsu II - Daimashikyou Galious

(UNI) Password generator:
Bytes 0-3:
Bytes 4-7:
Bytes 8-B:
Bytes C-F:
Bytes 10-13:
Note:bytes $00, $04, $10 are decimal numbers, each octet not greater than 9.
Random:
Password:


Maniac Mansion (Japan)

(UNI) Move the head:
During the game, on controller 2, hold B and press the D-Pad buttons to move the main character's head to the corresponding direction.

(UNI) Secret passwords:
おわりをみたい
おわりをみたい
おわりをみたい
-Ending sequence
しらとまなふ-"mattakuu" message
おわひ-"password ga nagaku de sumimasen" message
RESET-Reset NES system
せたかやくようか-"JALECO" message
JALECO-"jibun no tikara de tokou ne" message
よいおとかかたいなあ-Sound test

Mappy Kids

(UNI) Cheat options:
The cheats in this game tested in a very odd way. Instead of just checking the button combinations, pressend on any Controller, this game is counting the time how long you hold corresponding button. The combination of buttons held and how long they are held will trigger some effects. You can hold these buttons in any order or simultaneously, but only while the title screen is displayed, before the demonstration start, then press Start on controller 1. There are total 4 counters and 4 corresponding buttons. A complete list of combinations and timings for each button described in the table below.
Hold B on controller 2 for a 3-4 seconds (value between $3C and $78)
Hold Select on controller 1 for a 4-5 seconds (value between $78 and $B4)
Hold A on controller 2 for a 5-7 seconds (value between $B4 and $F0)
-Sound test
Hold A on controller 2 for a 4-5 seconds (value between $78 and $B4)
Hold B on controller 2 for a 5-7 seconds (value between $B4 and $F0)
-Level select
Hold Select on controller 1 for a 5-8 seconds (value between $B4 and $FF) in addition to the Level select buttons-In addition to Level select, this adds an 765000 yen to each player.
Hold B on controller 1 for about 4 seconds (value between $5A and $78)-Extra 20 lives both for 1 or 2 Player modes

Mappy-Land

Japanese version:

(UNI) Stage select:
At the title screen, press Up, A, Down, B, Left, A, Right, A, Select + Start.

Mario & Yoshi, Yoshi, Yoshi no Tamago

English versions:

(UNI) Soft reset:
Any time during game press A + B + Select + Start on controller 1.

Mario is Missing!

(UNI) Password generator:
New York complete
Rome complete
Syndey complete
San Francisco complete
Tokyo complete
Paris complete
Montreal complete
Moscow complete
London complete
Buenos Aires complete
Mexico City complete
Cairo complete
Nairobi complete
Beijing complete
Random
Password:


Mario Open Golf, NES Open Tournament Golf

Japanese version:

(UNI) Continue:
Start a new "STROKE PLAY" game. When asked to confirm the game select ("YES" or "NO") hold A + B on controller 2. The game will continue from the last played match.

Mario's Time Machine!

(UNI) Password generator:
80m B.C. complete
776 B.C. complete
31 B.C complete
1192 complete
1520 complete
1602 complete
1687 complete
1862 complete
1879 complete
1903 complete
1905 complete
1947 complete
1969 complete
1989 complete
Random
Password:


Masuzoe Youichi - Icchou Made Famicom

(UNI) Script debug:
During the game, hold A on controller 2, then press Up, Up, Down, Down, Left, Right, Left, Right on controller 1. Two numbers will appear, the first one is a chapter number, the second one is current event number. When you advance in the game, this number will increase.

Mechanized Attack

(UNI) Debug menu:
At the title screen, hold Down + Left + B + Select on controller 1, then press Right + A + B on controller 2. Then release all the buttons. Additionally, you can remove the clothes of the girl, used as the cursor menu. Initially, girls is fully dressed. Set "PLAYER", "MAGAZINE", "GRENADE" and "CONTINUE" options accordingly to values described below, to step by step undress the girl: 1776, 1815, 1266, 6666. If you enter finally 4444, then screen will change to just a single pentagram and locks.

Meiji Ishin

(UNI) Strategy mode:
At the title screen, press Up, A, B, Left, A, A, A, A, B, Right, B, A, Down, B, B, A + B on controller 2, then press A on controller 1 up to 8 and press Start. If done right, the game will start right from the strategy events, at the level according to how many times A was pressed.

Meimon! Dai San Yakyuu Bu

(UNI) Secret passwords:
みたいみ たいおわ りみたい-View Ending Sequence

Meimon! Takonishi Ouendan - Kouha 6 Nin Shuu

(UNI) Sound test:
At the very first briefing screen after selecting the game mode (start new or continue), before the map screen appears, hold A + B + Select + Start.

(UNI) Invulnerability:
At the map screen, select and enter "パスワード" option where your current password is displaying, then press Up, Up, Down, Down, Left, Right, Left, Right, B, A. A sound will confirm correct code entry. Enter this code one more time to toggle this cheat off. Every time you enter it, it will toggle on and off again.

(UNI) Credits:
After the game completion, at the "完" screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A, B, A, A, B, A, B, Right, Left, Right, Left, Down, Down, Up, Up.

Meitantei Holmes - Kiri no London Satsujin Jiken

(UNI) Sound test:
At the title screen, press A 20 times then press Start.

Menace Beach

(UNI) Skip level:
There are two different ways to trigger this cheat. First one: at the title screen, press Left, Select, Left, Left, Left, Left, Left, Left, Up, Up, Up, Up, Up, Up, Right, Right, Right, Right, Right, Right. When you press correct button (except the first one), white color changes to red. A sound confirms correct code entry. Then press B to trigger cheat and message "YOU BIG CHEATERHEAD!" will appear. Second one: start a new game, then press Up on controller 2 and Up + A + B on controller 1 at the same time, you will be returned back to the title screen if all done right, then start a new game. When cheat is enabled, during the game press B + Select on controller 1 to advance to the next level, up to ending animation sequence.

(UNI) Secret message:
Complete the game. When the ending animation sequence is over and a message "PRESS A TO REPLAY SCREEN, PRESS START TO RESTART GAME" appears, hold Down + Left + Select. When you holding these buttons, a sound will play 10 times then 5 times in row and the secret message will appear at the bottom of the screen.

Mendel Palace, Quinty

(UNI) Two player mode:
At the stage select screen during the single player game mode, press Select + Start on controller 2 to enable the two player game mode.

Metal Fighter, Mei Loi Siu Ji (Sachen / Kinema Music / Color Dreams), Wei Lai Xiao Zi (Joy Van)

All versions:

(UNI) Extra 16 lives:
At the title screen, press Down, A, Up, A, then press any other button, except A. Start a new game before demonstration begins.
Source: Yakovlev Victor

Metal Flame Psybuster, Metal Mech - Man & Machine

(UNI) Level skip:
During the game, in the mech mode, press Start to enter the game menu. Enable the "METAL FLAME" option, while credits is displaying on the screen, press Left + A + B + Select + Start.

Metal Slader Glory

(UNI) Secret passwords:
でばっぐ やろう★-Debug Mode
えりな もう おきなよ-Ending sequence
Source: Pennywise

Mezase Pachi Pro - Pachio-kun

(UNI) Hack the air lever:
Start a game of pachinko, and press Select to open the pause menu. Select the third option and press Select 10 times. Then select the first option and press A. A sound will confirm correct code entry. A coin will appear near the air lever in the bottom-right corner of the screen. Now you don't need to press the A button to throw the balls. Additionally, this fixing the air lever, so it won't slide by itself over time.

(UNI) Increase luck:
Start a new game, at the intro animation, wait for the Pachi-kun starts riding on the bike. While on ride, quickly press Select 10 times. A sound at the end of the route will confirm correct code entry. From now, all pachinko machines will operate at the 99% of luck, instead of random one, generated at the game start.

Mezase Top Pro - Green ni Kakeru Yume

(UNI) SRAM clear:
Hold A + B + Select + Start, then press Reset.

(UNI) Ending sequence:
Hold Down + B on controller 1 and A + B on controller 2 at the same time, then press Reset. You can view additional ending scenes if hold Select and/or Start on controller 1 (noting - ending 1, Start - ending 2, Select - ending 3, Select + Start - ending 4).

(UNI) Debug mode:
Hold Up + B + Select + Start on controller 1 and A + B on controller 2 at the same time, then press Reset. The Debug mode disclaimer will appear. If you want it to be enabled, just wait. If not, press Reset again. If enabled, during the game press Select to enter the palette edit mode. In map mode, press Start to immediately win the current round.

MiG 29 - Soviet Fighter

(UNI) Level select:
At the title screen, when the "PRESS START" message appears on the screen, press Up, Down, Left, Right, then hold one of the following combinations and press Start to start from corresponding level.
A-Mission 2
B-Mission 3
A + B-Mission 4

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Michael Andretti's World Grand Prix, Nakajima Satoru - F-1 Hero

Japanese version:

(UNI) Secret passwords:
さとる*MN-M represents the Level number with letters あいうえおらりるれ (levels from 1 to 9).
N represents the round number. Each level have it's own maximum number or rounds.
Level 1 - 4 rounds, level 2 - 5, 3 - 6, 4 - 7, 5 - 8, 6 - 10, 7 - 12, 8 - 14, 9 - 16. So you can enter any of letters あいうえおらりるれろかきくけこや representing the allowed numbers from 1 to 16 accordingly.
For Example, password "さとる*れろ" will lead you to level 9 round 10. Unfortunately, level 9, round 16 password crashes the game.

US version:

(UNI) Secret passwords:
SAMMY*IJ-I represents the Level number with letters from A to I (levels from 1 to 9).
J represents the round number. Each level have it's own maximum number or rounds.
Level 1 - 4 rounds, level 2 - 5, 3 - 6, 4 - 7, 5 - 8, 6 - 10, 7 - 12, 8 - 14, 9 - 16. So you can enter any of letters A to P representing the allowed numbers from 1 to 16 accordingly.
For Example, password "SAMMY*IJ" will lead you to level 9 round 10. Unfortunately, level 9, round 16 password crashes the game.

Mickey Mania, China Rabbit Baby

(UNI) Stage select:
Hold A + B + Select at the title screen.

(UNI) JY company's Easter egg:
Press Up, Up, Up, Up, Down, Down, Down, Down, Left, Left, Right, Right at the title screen.

Micro Machines

All versions:

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Regular version:

(UNI) Extra 6 lives with qualify and credits:
Fail the Qualify race (you must finish 3rd or 4th). Before the end of the race, hold Up + B + Select on controller 1 and Right + A + Select on controller 2 at the same time. Continue holding all these buttons and when the screen changes color, press Start on controller 1. A secret credits screen will appear. Press Start to continue the game qualified to challange with extra 6 lives.

Might and Magic

(UNI) SRAM clear:
Hold Down + A + B on controller 2, then press Reset. While screen is black, release Down and press Up, Right, Up, Left. The previous saved game will be erased.

Millionaire (Sachen)

(UNI) Secret message:
During player one turn, press Up, Start, Left, Select, Down, Select, Right, Start, Select, Select, Start. The secret message will appear.

Minelvaton Saga

(UNI) Debug mode:
At the title screen, press Up, Up, Down, Left, A, Left, Right, Down, Down, B, press Start and the title screen will change color to black. During the game, press Start to enable and Select to disable debug mode, which includes the faster movement speed and disables random encounters.
Thanks to KeyBlade99 for corrections.

(UNI) SRAM clear:
Hold Up + Down + Left + Right on controller 2, then press Reset. Now, the program is waiting for A on controller 1 to be pressed. When you press it, if SRAM is properly initialized, a message オーケーです ("OK") will be displayed on the green background for a very short time, then game will continue. In other case, you'll see a message ダメ ラムエラー ("BAD RAM ERROR") on the red background. Press B and WRAM will initialize and message でんばんを オフしてください ("TURN THE POWER OFF") will appear, and background change it's color again.

Miracle Ropit's Adventure in 2100

(UNI) Continue:
After death on the level 2 and later, at the game over screen, press quickly A, A + B, Up + A + B, Down + A + B, B on any controller, you'll continue the game from the last played level with 3 lives.

Mirai Senshi - Lios

(UNI) Ending sequence:
Hold Up + A + Select on controller 1, then press Reset.

(UNI) Sound test:
Hold Up + B + Select on controller 1, then press Reset. Unfortunately, probably due to programmer's bug, if you exit from the Sound test with Start, you'll continue in rather broken highly glitched game.

(UNI) Instant continue:
Hold Down + A + Select on controller 1, then press Reset to jump directly to the saved previously game, skipping the title screen and intro.

Mirai Shinwa Jarvas

(UNI) Teleport to start:
During game, press Up, Up, Down, Down, A, B, A, B on controller 2 and you will be returned back to the starting point.

(UNI) SRAM clear:
Hold Up + Down + Left + Right on controller 2, then press Reset. Now, the program is waiting for A on controller 1 to be pressed. When you press it, if SRAM is properly initialized, a green message "OK!!" will be displayed on the for a very short time, then game will continue. In other case, you'll see a red message "NG!!". Press B and WRAM will initialize and message "PWR OFF" will appear.

Mission Impossible

All versions:

(UNI) Secret passwords:
LRHN-Level 1
KMVW-Level 2
XDGJ-Level 3
QBYZ-Level 4
HMPR-Level 5
TVJL-Level 6
YGKX-Computer level. To enable this password, hold Up + A + B on controller 2, then press A on controller 1. In other case, it won't be accepted.
MTKN-Computer password. Can be accepted only in the Computer level at the end of the game. This password will be given to you during the game.

(UNI) Invulnerability:
Select the continue option, enter password for Level 1 (LRHN), hold Left + A + B on controller 2, then press A on controller 1. You will start a new game invulnerable for a regular enemies attacks, but you still could be hit by the car, or be captured, etc.

European versions:

(UNI) Invulnerability:
Hold Up + Right + A + B on controller 2, then press Reset. This cheat added in the European version as a shortcut for the LRHN password cheat, but latter is still present in the game and can be used too. As against regular invulnerability cheat, you can use this one not only from the beginning, but from any level you could access with password, except the first one. If you enter the Level 1 password after enabling cheat this way, it will be disabled.

Mito Koumon - Sekai Manyuu Ki

(UNI) Quick password exit:
At the password screen, press A on controller 2 to immediately return to the title screen. This is a leftover from the developement stage of the game, other similar shortcuts was removed in the final version.

Mitsume ga Tooru

(UNI) Debug menu:
At the title screen, hold A + B on controller 2 and Select on controller 1 at the same time, then press Start.

(UNI) Level select:
At the title screen, hold A + B on controller 2, then press on controller 1 A, A, A, A, B, B, B, B, A, B, A, B, A, B, A, B.
Source: Yakovlev Victor

(UNI) Extra money:
At the stage number screen, on controller 1, hold Select, then press repeatedly two different D-Pad buttons one by one as fast as you can. For example, repeat Up, Down or Left, Right. Pause between pressings should be less than 1/8 second, but you could do it faster. If all is done right, every 8 button pressed the money counter will be increased by 1000 and you hear the sound. With this cheat you may obtain 2000-5000 at the beginning of every stage for free.

Mo Jie Ba Zhu (Nanjing, NJ079), Mo Jie Ta Shi (Nanjing)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Mobile Suit Z Gundam - Hot Scramble

(UNI) Debug monitor:
At the title screen, on controller 2 press A, Up + A, A + B, Up + B, B, Right + B, A + B, Right + A, Right + A, Left + A, A + B, Down + A + B, Down + B, a message "MONITOR ON" appears instead of the hi-scores, but only if the title screen is renewed after the demo sequence. From now there is some debug features will be available. Instead of score string you can see one-byte memory viewer, while on pause you can change addresses by pressing Up or Down on controller 1 or buttons on controller 2, with Select on controller 1 you can advance game by frame by frame.

Momotarou Densetsu

(UNI) Secret passwords:
すべてのきよくがききたいな-Sound test
すべてのてきがみたいな-Picture test

Momotarou Densetsu Gaiden

(UNI) Window Frame Design Room:
Hold Down both on controller 1 and controller 2, then press Reset.

Money Game, The

(UNI) Ending sequence:
At the title screen, hold Down + Left + A then press Start. While screen is black, press B, A, A, A, B, A, A, A, B, A, A, A, A, B, B, A, B, A, B, B, A, B, B, A, B.

(UNI) Stage advance skip:
During the game, press Select to enter to the Save Menu, select the second option, then hold Right + A + B on controller 2 and Right + B on controller 1 then press A on controller 1. From now, you can advance to the next stage without money counting.

(UNI) Competition mode:
During the game, press Select to enter to the Save Menu, select the second option, then hold Left + A on controller 2 and Left on controller 1 then press A on controller 1. Enter your ID and password and answer "Yes", the game will be switching to the competition mode.

Money Game 2 - Kabutochou no Kiseki, The

(UNI) Skip intro:
At the title screen, enter the "START" option, then select one of the game modes. Press A + B and keep it pressed before the game screen appears.

(UNI) Instant phone calls:
During the game, in some cases you couldn't make a phone calls. Hold A on controller 2 before call to avoid all restrictions.

(UNI) Market helpers:
During the game, click on the computer, select the second menu option (market trade), then hold A + B on controller 2 and press A on controller 1. An extra column will appear in the market list with some additional info to the prices.

(UNI) Instant Kohinata-san talk:
During the game, click on your notebook, select third option and then ask for talk with Kohinata-san (first menu option), sometimes you couldn't do it, because of late hours or he is gone. Hold A on controller 2 before entering first menu option to be able to speak with him any time.

(UNI) Kohinata-san talk:
During the game, go to speak with Kohinata-san as decribed above. Before talk, hold A on controller 2 to show the list of objects to select before talk.

(UNI) Kohinata-san talk:
During the game, go to speak with Kohinata-san as decribed above. Select the second option (persuasion), hold A on controller 2, then press A on controller 1 to always persuade.

(UNI) Extra 5 million yen:
At the game over screen (first game over), hold Up + A + B on controller 2 and press A on controller 1. The game will immediately start from the beginning with different intro sequence and you'll get 3 million yes at the beggining, instead of 2, as well as pretty secretary.

(UNI) Second chance:
At the game over screen (second game over), hold Up + A + B on controller 2 and press A + B + Select on controller 1. The game will return to the previously ended game with no money and day before the game over again.

Monster In My Pocket

(UNI) Skip copyrights:
When the copyright screen appears, hold A + B + Select and press Start to jump directly to the intro sequence.

(UNI) Sound test:
Right before the title screen appears, at the copyright screen hold Right + A + B and press Start. If you do not want to wait for copyrights screen disappear hold additionally Select.

Moon Crystal

(UNI) Stage select:
Hold Up on controller 2, then press Reset.

(UNI) Debug leftovers:
The Maclonna Mines stage boss have a leftover from the developement stage. Press A on B or Down on controller 2 to force the boss throw the rock for corresponding range any time. This is most probably was used for debugging throwing animation and wasn't removed from the final version.

Moon Ranger

(UNI) Unlimited continue:
Normally, after the game over screen you need to press A + Start to continue the game, but if you additionally hold Down, continue counter won't decreased, you can continue with pressed Down as much as you want.

(UNI) Invulnerability and Level skip:
After the game start, hold Up on both controllers, then press A + B on controller 1. Now some cheats are enabled, hold A and press Select to enable invulnerability. Return back to the game by pressing Select one more time. Or hold B then press Select to skip the current level.

Morita Kazuo no Shougi

(UNI) Start round from the beginning:
Normally, the game will track all played moves from both players and can restore the last played game after the reset or power off. If you hold B on any controller at the title screen, before the game start, the game will rewind to the very first move of this round, and you can track all the moves from the beginning using the replay mode, or start to play from any move. This is actually can be done with the replay mode itself, but with this cheat, you just jump to the beginning of the reound.

(UNI) Reset last played game:
At the title screen, hold Up + A + B, then press Start on controller 1. The last played game will be erased.

Mortal Kombat II/III Special (JY)

(UNI) JY company's Easter egg:
After the demonstration start, at the player select screen, press Up, Right, A, Down, Right, B, Up, Left.

Mortal Kombat V (YOKO)

(UNI) 2-Player mode:
During the 1-Player game, press A + B on controller 2 to switch the game to the 2-Player mode instantly and return back to the play selection menu.

Motocross Champion

(UNI) Secret passwords:
あまのんははら-Ending sequence
いいたんたこす-Game over sequence

Mouryou Senki Madara

(UNI) Sound test:
At the title screen, press Down, Down, Up, Up, Right, Left, Right, Left, A, B.

Ms. Pac-Man (Tengen)

(UNI) Level skip:
Pause the game and press A, A, A, B, B, B, Up, Down, Left, Right, A, B, A, B, A, B, Up, Down, Left, Right, B, A, B, A, A, A, Up, Down, Left, Right. Now you can press Select to skip current level.

Musashi no Bouken

(UNI) Sound test:
At the title screen, after message "push start" appears, press A, B, A, B, A, B, Right, Select. A sound will confirm correct code entry.

(UNI) Maximum level:
At the title screen, after message "push start" appears, press Select, B, A, Left, Right, B, Right, Select. A sound will confirm correct code entry.

Musashi no Ken - Tadaima Shugyou Chuu

(UNI) Slowdown the dog:
At the title screen, press Down + A + B on controller 1. A running through the screen dog will stuck, confirming correct code entry. From now the dog in game will be slower.

Mutant Virus, The

(UNI) Another quest:
At the title screen, hold Up + A + B + Select on controller 1, then press Start. An image of man in space suit changed as well as starting level.

Nagagutsu wo Haita Neko - Sekai Isshuu 80 Nichi Daibouken, Puss 'n Boots - Pero's Great Adventure

Japanese version:

(UNI) Player 2 reverse controls:
At the title screen, shout to the microphone on controller 2 10 times, then hold Down + Left + A + B on controller 2 and press Start on controller 1. Start a two players game. If done right, the second player's movement controls will be reversed. This strange cheat is exactly the same as in another game by the same developer: "Hokuto no Ken".

Nakajima Satoru - F-1 Hero 2

(UNI) Secret passwords:
さとる*MN-M represent the Level number with letters あいうえおらりるれ (levels from 1 to 9).
N represents the round number. Each level have it's own maximum number or rounds.
Level 1 - 4 rounds, level 2 - 5, 3 - 6, 4 - 7, 5 - 8, 6 - 10, 7 - 12, 8 - 14, 9 - 16. So you can enter any of letters あいうえおらりるれろかきくけこや representing the allowed numbers from 1 to 16 accordingly.
For Example, password "さとる*れろ" will lead you to level 9 round 10. Unfortunately, level 9, round 16 password crashes the game.

Namco Classic II

(UNI) Instant round restart:
During the game, in the stand up mode, hold A + B, then press Select to restart current game from the beginning.

Nangoku Shirei!! - Spy Vs Spy

(UNI) Sound box:
Right before level ends, at least one A and one B on any controller should be held. If done right, sound box will appear. While in "sound box" mode, press A on controller 2 for resetting music and pause.

(UNI) Staff:
While in "sound box" mode hold Right + A + B on controller 2 to switch to "Staff" mode. Just shift cursor to the second page and return it back and you'll see two staff screens.

Nantettatte!! Baseball

(UNI) Credits:
At the title screen, when the message "PUSH START" appears, press Up, Down, Left, Right, Up, Down, Left, Right, B, B, B, A.

(UNI) Soft reset:
During the game, press quickly Start then Select.

Napoleon Senki

(UNI) Sound test:
At the game setup screen, press Left + A + B on controller 2.

Navy Blue

(UNI) Sound test:
After completing the game, at the "Presented by I'MAX" screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Select.

(UNI) Password generator:
PositionField
Random:
Password:


Ne Zha Chuan Qi (Nanjing, NJ036)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box, but the proper graphics or text was removed from this version of the game. This cheat can be found in a couple of Nanjing games on the same engine.

Nekketsu Kakutou Densetsu

(UNI) Password generator:
Note, you can not set any of the names used in the game by other CPU characters as your name while creation your character. Also that names can not be used in password. But there is one exception: name "くにお" allows you to play as Kunio itself. He have 5th unique blood type.
Blood type:
Name:
Birth:-Month-Day
Level:
Team:
Bits:
Random:
Password:


Nekketsu! Street Basket - Ganbare Dunk Heroes

(UNI) Password generator:
Story mode:
TeamGuestHome
New York
San Francisco
Texas
US Navy
Havaii
Las Vegas
Florida
Random:
Password:


New York Nyankies, Rockin' Kats

(UNI) All items:
During the game, press Select to enter the items menu. Hold Down + A + B on controller 2, press Start or A on controller 1 to exit this menu. A sound will confirm correct code entry.

(UNI) Debug leftovers:
Enter the Bonus Games TV channel at the main game menu, then choose to play Roulette minigame (const $50). While roulette is start spinning, but before the progress bar on the right gets filled, hold Up + Left + A + B + Select on controller 1. This causes roulette to stop always on number 8. Regardless of prize is set to this sector or not, you will be thrown away with no bonus. The jump animation for this case is very odd, so it can be suggested this is an animation debug leftovers, since there are no profit for using this cheat.

(UNI) Secret passwords:
US|Japan-Effect
F♊GHTB♋SS_|たたかえてきたおせ_-Boss fight. Insert a number 1 to 5 instead of "_" to select one of the 5 game bosses, excluding the last one.
♉ND♊NG5♥♥♥|みせておくれみせて5-Ending sequence.
M♈PH♈RDM♈P|きついねこれきついね-Final Level 6 and Last Boss fight.
P♋W♉R★♌P!!|くれアイテムくれくれ-All items.
G♉T!M♋N♉Y$|ほしいおかねくれくれ-Extra 5000 money.
K♈TS50K♈TS|ねこ50ねこ50ねこ-Extra 50 lives.

Nightshade

(UNI) Soft reset:
Press Up + Down + Left + Right + A + B + Select + Start.

Nihonichi no Mei Kantoku

(UNI) Secret words:
Enter one of the following words as a player name.
きんたろう-By default, the starting player parameters are 450/450/500/500, with some additional bonus points
not less than 100. If you enter your name with all the same
characters (if you do not care much about the game), then your additional bonus points will
be always 40, so you need enter at least one or two different symbols in your name. But if you enter this
secret name, you'll start with all parameters set to 998, however with just 1 bonus point.
あるふぉんす-Debug mode. During the game your opponents have only 4 different non-random deliveries, cycling,
you can skip any catch/delivery by pressing B + Select. Enter the ingame menu by pressing A, select top option,
hold Select then press A to bring up the debug menu, where you can select memory/stats/data viewer or warp
to the next round. Enter a new tournament, at the game setup menu, select second option, hold Select then press
A to enable the auto game option.
おふし゛やん-Doing something with stats after a winning round. Purpose isn't clear.
とーいす゛-Doing something with stats after a winning round the same way, but at different side. Purpose isn't clear.

Ninja Cop Saizou, Wrath of the Black Manta

Japanese version:

(UNI) Invulnerability:
Before the title screen, press B, B, Select, A, Up, Select, Right, Start. A "MUTEKI" message will appear at the bottom part of the screen.

Ninja Gaiden 2 - The Dark Sword of Chaos, Ninja Ryukenden II - Ankoku no Jashin Ken, Shadow Warriors Episode II - The Dark Sword of Chaos

European version:

(UNI) Sound tests:
The Sound test cheat is the same as in all NTSC versions, but the button code to enable it is different. You must press Down + Left + A + B + Select, instead of Up + Left + A + B + Select to enable any of three Sound tests.

Japanese version:

(UNI) Ending easter:
After beating this game and when the final credits is over. At the "THE END" screen, press Right + B + Select. An extra ending sequence will be displayed with the final messages from the two final bosses. This easter were completely removed from western versions.

Ninja Gaiden 3 - The Ancient Ship of Doom, Ninja Ryukenden III - Yomi no Hakobune

US version:

(UNI) Extra 99 continue:
Wait until the title screen fades out then press Start, repeat this 8 times, then hold Up + Left + A + B + Select and press Start.

Ninja Jajamaru - Ginga Daisakusen, Squashed (Prototype)

Japanese release version:

(UNI) Sound test:
At the title screen, press A, Up, Down, B, Left, Right, Up, Up on controller 2.

(UNI) Stage select:
At the title screen, press Up, Down, Left, B, A, A, Up, Right on controller 2. Select the stage number, press Start to begin a new game from the selected stage.

Japanese beta version:

(UNI) Sound test:
At the title screen, press A, A, B, B on controller 2.

(UNI) Ending sequence:
At the title screen, press B on controller 1.

All versions:

(UNI) Intro easter:
At Jaleco logo screen, before the title screen, hold A on controller 2 to stop the Jaleco logo from moving down and stand still on the screen.

Ninja-kun - Ashura no Shou

(UNI) Freeze hi-score:
At the title screen, press A, B, A, B, B, A, B, A.

Ninjara Hoi!

(UNI) SRAM clear:
Hold Select + Start then press Reset. The SRAM save data will be erased.

Nintendo World Championships 1990

(UNI) Timer test:
At the title screen, on controller 2, hold A, then press Select.

(UNI) Skip Super Mario Bros:
At the title screen, on controller 2, hold B, then press Select. This allows you to start right from the Rad Racer game, so you can spend more time for this game and Tetris and finally get more points, but at the results screen the SMB results will be all zero.

Noah's Ark

(UNI) Cheat mode:
At the title screen, press Up, Left, Left, A, Down. A small number will appear at the middle of the screen. Press Select to change it from 0 to 6, press Start to start from level with corresponding number. Press Select + Start during the game to skip current level. Also you'll get unlimited lives.

Nuts & Milk

(UNI) Secret message:
Start a new game, press Start to pause it, then hold Right + B on controller 2 and Left + A + B + Select on controller 1, then press Start. "VERSION 1 1984 05 29 BY KIKU" appears. "KIKU" is a programmer of HUDSON Kikuta Masaaki (菊田昌昭. He put secret codes with messages almost in all his games under HUDSON label."

Ochin ni Toshi Puzzle Tonjan!

(UNI) Music control:
During the game, on controller 2, press A to cycle throught the 4 different background melodies, press B to toggle music off and on.

Olympic IQ (Sachen)

(UNI) Stage select:
At the title screen, press A, B, Up, Down.

Operation Secret Storm

(UNI) Level skip:
At the map screen or during the game, hold Up on controller 2 and Up + A on controller 1 then press B on controller 1. This will enable the level skip cheat. Now any time during the game, hold B then press Select on controller 1. Total 12 stages are available, after 12th, you will return back to the stage 1.

Operation Wolf

Japanese version:

(UNI) Debug leftovers:
At the title screen, press Up, Down, Right, Left, A, B, Down, Up. This will set the Debug flag, the same as in the US version, but in the Japanese version most of debug features are absent, the only functionality present is a gunsight shot display position debug (white square) at the stage select screen.

Over Horizon

All versions:

(UNI) Level skip:
Hold Right + A + B on controller 2 and press Reset. While in game, hold Select on controller 1 then by pressing A on controller 2 advance to the next level.

P'radikus Conflict, The

(UNI) Hi power weapon:
During flight mode, press Start to pause the game and press B, Up, Right, A, Down, Left, a sound will confirm correct code entry.

Paaman - Enban wo Torikaese!!

(UNI) Stage select:
Power the console off, hold one of the following button combinations on controller 1, then power the console on. At the title screen, select the "CONTINUE" option to start from the corresponding stage.
A-Stage 2
B-Stage 3
A + B-Stage 4
Select-Stage 5
A + Select-Stage 6

Paaman Part 2 - Himitsu Kessha Madoodan wo Taose!

(UNI) Software reset:
During the game, there is a "P" doors with various rooms. At the rooms with boxes, if you press Select + Start, you'll immediately return to the title screen.

Pac-Mania

(UNI) Extra 10 continues:
At the game over screen, press Up + A + Start on controller 1.

Pachi-Slot Adventure 2 - Sorotta-kun no Pachi Slot Tanteidan

(UNI) Luck adjust 1:
During the slot-machine play, after inserting of coins, hold A then press Down.

(UNI) Luck adjust 2:
During the slot-machine play, after inserting of coins, hold B then press Down.

(UNI) Luck adjust 3:
Some slot-machines doesn't have this option. During the slot-machine play, after inserting of coins, hold Start then press Down. For one slote-machine session only one cheat is allowed, if you enter any of this cheats, it will stay enabled until you exit the slot-machine session.

Pachio-kun 2

(UNI) Force people to move along:
During the game, some NPC are sitting in front of slot-machines and leave it only after a while. If you can't wait, talk to it, but to finish conversation, instead of A hold Up + Down then press B, NPC will immediately move along. The same is for any NPC blocking your way.

(UNI) Get read of all people:
During the game, hold Up + Down then press Select. All people on the level will disappear.

(UNI) Play top-level pachinko:
During the game, stand before any pachinko-machine, hold Up + Down then press A.

Pachio-kun 3

(UNI) Cheat mode:
First you must enable the cheat mode. Hold A both on controller 1 and controller 2 then press Reset. During demo sequence or at the title screen hold B both on controller 1 and controller 2 then press Start on controller 1. A sound will confirm correct code entry. This cause a different effects during the game.
Now you can force people to move along if they sit or blocking your way. Talk to them, and at the end of conversation hold Up + Down then press B.
Also select any pachinko-machine, when asked "YES" or "NO", select "YES", then hold Select and press A to enable the pachinko-machine selection mode. You can press Up or Down to select machine type, Left or Right select machine level, press B to enable "rock", press A or Start to start pachinko-machine.
Do the same as previous, but hold Select + Start before selecting "YES". All machines of this type will be instantly beaten.
Additional cheat can be enabled if you did the first one. When game just started, Pachinko-King will speak to you. When his introducing conversation is over, hold Select + Start then press A to move to the map screen. Now return back to the Pachinko-King to solve the final puzzle and finish the game with all 15 houses beaten at the higher rate. Also, this will cause a total AI cancelation in all houses, no one is able to move or use any pachinko-machine, although they can speak with you, but you no need to force them to move along.

Pachio-kun 4

(UNI) Cheat mode:
Due to similar engines, the cheat for this version mostly the same as for Pachio-kun 3. To enable cheat mode press A both on controller 1 and controller 2 at the controller selection menu. During demo sequence or at the title screen hold B both on controller 1 and controller 2 then press Start on controller 1. A sound will confirm correct code entry. This cause a different effects during the game.
Now you can force people to move along if they sit or blocks your way. Talk to them, and at the end of conversation hold Up + Down then press B.
Even more, you can get rid of all people in the house, just hold Up + Down then press Select while in house.
Also select any pachinko-machine, when asked "YES" or "NO", select "YES", then hold Down + Left + Select and press A to enable the pachinko-machine selection mode. You can press Up or Down to select machine type, Left or Right select machine level, press B to enable "rock", press A or Start to start pachinko-machine.
Do the same as previous, but hold Select + Start before selecting "YES". The machines of this type will be instantly beaten.
Additional cheat can be enabled if you did the first one. At the main game menu, while selecting a start or contiue game options and settings, hold Select or Start or both then start a game. If done righ, a total AI cancelation in all houses will be enabled. No one is able to move or use any pachinko-machine, although they can speak with you, but you no need to force them to move along.

Pachio-kun 5

(UNI) Cheat mode:
Due to similar engines, the cheat for this version mostly the same as for Pachio-kun 3/4. To enable cheat mode press A both on controller 1 and controller 2 at the controller selection menu. During demo sequence or at the title screen hold B both on controller 1 and controller 2 then press Start on controller 1. A sound will confirm correct code entry. This cause a different effects during the game.
First of all, when creating a new save after enabling this cheat, you'll get extra 500 coins to a new save slot.
Now you can force people to move along if they sit or blocks your way. Talk to them, and at the end of conversation hold Up + Down then press B.
Even more, you can get rid of all people in the house, just hold Up + Down then press Select while in house.
Also select any pachinko-machine, when asked "YES" or "NO", select "YES", then hold Down + Left + Select and press A to enable the pachinko-machine selection mode. You can press Up or Down to select machine type, Left or Right select machine level, press B to enable "rock", press A or Start to start pachinko-machine.
Do the same as previous, but hold Select + Start before selecting "YES". The machines of this type will be instantly beaten. At some point this will cause also an instant win for some pachinko-machines without even using a cheats.
Additional cheat can be enabled if you did the first one. At the main game menu, while selecting a start or contiue game options and settings, hold Select or Start or both then start a game. If done righ, a total AI cancelation in all houses will be enabled. No one is able to move or use any pachinko-machine, although they can speak with you, but you no need to force them to move along.

Palamedes 2 - Star Twinkles

(UNI) Sound test:
At the title screen, hold A + B on controller 2 and press Start on controller 1.

Panda Prince

(UNI) Copyright screen 1:
At the title screen or at the player select menu, press Up, Left, Down, Down, Right, Right, Left, Up.

(UNI) Copyright screen 2:
At the main menu, press Left, Up, Right, Right, Down, Down, Left, Up.

(UNI) Level select:
Find and enter a hidden bonus room on any stage, then just press Start, a small number appears in the middle of the screen. Press Up or Down to change the number, press Start to start from the selected level.

Panic Restaurant, Wanpaku Kokkun no Gourmet World

(UNI) Extra 1 life:
During the game, when no more lives left and scores are divisible by 200 (eg 200, 600, 2200, etc.) as well as exactly 50 seconds left on the timer, press Start to pause the game, then press A + B, and a single extra life will be obtained.

Paperboy

Japanese version:

(UNI) Extra 7 lives:
During the game, when no more lives left, press Start to pause the game, then hold Up, press A, press B, release Up, hold Right, press B, release Right, hold Up, press A, release Up, hold Left, press B, release Left, hold Down, press B twice, release Down, hold Right, press A.

Parallel World

(UNI) Secret passwords:
All numbers are correspond to the certain tiles with patterns on the password screen. A blank tile (without pattern) is a number 0. Each number means how much times you should press A to reach the desired pattern.
5 1 1 6
9 1 1 7
2 0 0 2
3 0 0 3
-Sound test
5 1 1 6
2 5 6 2
2 0 2 2
4 1 3 2
-Ending sequence
5 6 5 6
4 0 0 3
5 0 0 6
4 3 4 3
-Unlimited lives

Parasol Henbee

(UNI) Secret passwords:
えあわせ-Boss Minigame 1
すもうき-Boss Minigame 2
すもうし-Boss Minigame 3
むてきさ-Invulnerability
としひこ-Game over message
もとひろ-Game over message
しんんん-Game over message

Parasol Stars - The Story of Bubble Bobble 3

(UNI) Unlimited Continue:
At the title screen, press A, B, B, A, Left, Right, Left, Right. A "c" letter will appear in the upper left screen corner.

Paris-Dakar Rally Special

(UNI) Debug mode:
At the title screen, press Up, Up, Down, B, Right, Left, Left, Start. You will obtain an extra 99 lives every level automatically. During game, press Select + Start to skip current level.

Perfect Bowling

(UNI) Music select:
At the player setup screen in any game mode, press Select to cycle through the background music or switch it off.

(UNI) Split mode:
Select the Training game mode, setup the player's name, hand and bowl weight. Before press A on controller 1 to complete the player setup, hold B on controller 2. In this mode the field setup for each round is predefined and it will be always the split setup, where the bottles will be always placed separately. This is training for the skilled players.

Pescatore (Prototype)

(UNI) Soft reset:
During the game, press Select + Start to reset the game.

(UNI) Credits:
At the title screen, press Select to see the credits. Press A at the last credits screen to play various sound efffects.

Pesterminator - The Western Exterminator

(UNI) Invulnerability and level select:
During the game, hold Up on controller 2 and on controller 1 hold Up + A, then press B. Release all buttons, now any time you can hold A and press Select to enable invulnerability or hold B and press Select to skip current level.

(UNI) Unlimited continue:
At the game over screen, hold additionally Down, then press A + Start to continue the game without decreasing the continue counter.

Pipe Dream

(UNI) Cheat mode:
During the game press Start, continue holding Start then press A, B, B, A, release Start then press any button to return to the normal game. Now, press B to pause time, press Select to release time flow again. This will also gives an unlimited wrenches, as well as automatic jump to the next round even if you failed in this round.

(UNI) Soft reset:
Press A + B + Select.

Pirates!

(UNI) Hall of fame reset:
At the hall of fame, press Right + B + Select.

(UNI) Saved games reset:
At the first copyright screen, hold Right + A + B + Select until the title screen appear.

Plasma Ball

(UNI) Sound test:
At the title screen, select the "1 PLAYER" option, hold Left + A + B on controller 2, then press A or Start on controller 1. Use controller 1 to select and play the background music, use controller 2 to select and play sound effects.

Platoon

(UNI) Secret words:
Enter one of the following words as a player name at the hi-score screen:
KOMADA-Sound test
SUZUKIKUN-Ending sequence
HIROKUN-Ending sequence

Pocahontas

(UNI) Stage select:
Before the title screen appears, press A + B + Select + Start.

Pocahontas 2 (Super Game)

(UNI) Debug mode:
At the title screen, press Up, Left, Down, Right, A, A, B. Pause the game and press A + B, move the character to any place of the map, press Start to return to the normal game at the new position.

(UNI) Level select:
At the title screen, before pressing Start, hold one of the following buttons:
Down-Level 2
Left-Level 4
Right-Level 6

Pocket Monster (Early Super Game), Panda World, Super PoPo's Adventure

Panda World version:

(UNI) Level skip:
Pause the game and press Select, Up, Up, Down, Down, Left, Left, Right, Right, A, A, B, B. Pressing Select also resets the code entry to the beginning.

PoPo's Adventure version:

(UNI) Level skip:
Pause the game and press Select, A, B, A, A, B, B, A, A, A, B, B, B. Pressing Select also resets the code entry to the beginning.

Pocket Monster Red (Waixing)

(UNI) Secret message:
During the game, any time press Right + A + B + Select + Start on controller 1 to see a secret copyright message.

Poke Block, Mahjong Block

(UNI) Stage select:
At the options menu, highlight the "LEVEL" option, then press Down + A to cycle the level number from 0 to 8, press Down + B to cycle the sublevel number from 0 to 4 and finally press Up + Down to add 10 to the level number up to 30.

Poker Mahjong

(UNI) Easter egg:
Select the "FOR ADULT" game mode (third option at the title menu), on the screen with the game and the password menu options, press A, B, Up, Down, Left, Right, Select, Select, Select, Select.

(UNI) Cheat mode:
During the player's turn, pause the game then enter code Up, Up, Down, Down, Left, Right, Left, Right, B, A. A sound will confirm correct code entry. Now you can select any card instead of getting the random one. Enter this cheat one more time to toggle the game back to the normal mode.

Pokemon Gold (Mars)

(UNI) Easter egg:
During the game, enter the menu by pressing Select then press Left + A + B + Select + Start on controller 1. A "MARS" logo screen will appear.

Pole Chudes (Chudov)

(UNI) Secret message:
At the difficult selection screen, press Right + A on controller 1, a sound will be heard, now you can should press Start to return back to the selection menu or press Left + B on controller 1 to show the secret copyright message from the developer.

Power Blade, Power Blazer

Japanese version:

(UNI) Power Boomerang:
At the title screen, press Left, Up, Right, Down, Up, Up, B, A, B, A, Start.

US version:

(UNI) Password generator:
Current sector:
Level:
Ration:
Progress:Sector 1 
Sector 2 
Sector 3 
Sector 4 
Sector 5 
Sector 6 
Rations:Sector 1 
Sector 2 
Sector 3 
Sector 4 
Sector 5 
Sector 6 
US Password:


Power Rangers III

(UNI) JY company's Easter egg:
At the title screen, press Up, Right, Up, Right, Right, Right, Up, Left.

Power Rangers IV

(UNI) JY company's Easter egg:
At the title screen, press Up, Right, Up, Right, Right, Right, Up, Left.

Predator

All versions:

(UNI) Skip normal mode levels:
Any time during normal levels, hold Left + Right, then press A or B.

(UNI) Skip big mode levels:
Before entering the big mode levels, hold Up + Down + A and wait until the normal level number screen appears.

President no Sentaku

(UNI) Counters cheats:
At the title screen, press Start to jump to the title menu, now press A and B in any order for a corresponding number of times (see the table below) to enable a couple of different effects or game modes.
A 2 times, B 2 times-Sound Test
A 3 times, B 3 times-Ending Sequence
A 6 times, B 6 times-Warp to the game level 2
A 10 times, B 9 times-Warp to the game level 3
A 13 times, B 3 times-Warp to the game level 4
A 4 times, B 4 times-Extra event at the end of the day 1
A 6 times, B 2 times-Extra event at the end of the day 2
A 8 times, B 2 times-Extra event at the end of the day 3

Prince of Persia

(UNI) Password generator:
Level:
Time:
Random: 
Password:


Pro Action Replay

Version 1.2:

(UNI) Secret message:
Hold Select then enter to the main menu. A screen with the program version, copyrights, date and checksum will appear.

Pro Sport Hockey, USA Ice Hockey in FC

Japanese version:

(UNI) Sound test:
Hold Select + Start, then press Reset.

Probotector II - Return of the Evil Forces, Super C, Super Contra

Japanese version:

(UNI) Level select:
At the title screen, hold Down + Select then press Start. Select area number then again press Start.

Punisher, The

(UNI) Maximum percentage:
At the "STAGE COMPLETED" screen, quickly hold Down + Right + B on controller 1 before the percentage counter is displayed. If done right, the percentage counter will be 100, no matter if you doesn't shoot anybody. So you can instantly obtain a maximum bonus.

(UNI) Easter egg:
After completing the game, at the final Punisher's line ("WELL, MY JOB'S FINISHED..."), hold Up + B + Select on controller 1. You'll see the scary Punisher's face.

Puyo Puyo

(UNI) Unused password entry mode:
At the password screen, select the fourth password character to edit (do not change the first three!), select a letter, hold Select and press A or Start. To the right of the password a new string ended with "0" will appear. Every time you press A or Start while holding Select at this position, a new letter will be added to this string. You can't return and change previously entered symbols, there are 8 symbols total to enter. When finish, enter last three characters of the password as usual, but do not change the "?" in the first one!. Now, hold Select and press A or Start. The programm will compare the sum of particular chars in 8-symbol string you entered with corresponding character you entered at the password string and if they match will display the "PASSWORD OK!" message. However, there is no purpose in this sting here at all in the final version of the program. To test this, just enter the secret pass "00000000" as described above, then enter password "?000" and the check will pass.

(UNI) Password generator:
Level:
Random:
Password:
Secret password:
Check code:


Puzslot

(UNI) 2-Player mode patterns change:
Enter the 2-Player mode menu, hold Up and press Start. This will change the slot patterns and rise difficult of the game.

(UNI) Demo record leftovers:
At the title screen, hold Up + Down + Left + Right + A + B + Select + Start and wait until the demonstration starts. This will likely won't work always, since the current game programm doesn't allow Left + Right pressed at the same time, but if you being lucky enough, the button combination will pass. Anyway, there is not much left from the demo record code, you doesn't even able to stop the record and replay it anymore. But the recorded data will be saved to the SRAM and can be read later.

Puzznic

(UNI) Secret passwords:
FCPZ-"PUZZNIC" mode Stage select
ZZ1C-"GRAVNIC" mode Stage select

Pyramid (Sachen)

Sachen-Hacker version:

(UNI) Picture test:
At the title screen, press Up, Down, Left, Right, Up, Down, Left, Right. You can see the game's nude picture as well as edit palette.

Pyramid II (Sachen)

(UNI) Secret message:
During the game, press Up, Up, Up, Up, Up, Up, Up, Up, Select, Select, Select, Start.

Qi Guo Da Zhan (Nanjing, NJ029)

(UNI) Secret message:
During the game, while in dialog mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Quarter Back Scramble

(UNI) Sound test:
At the title screen, after the message "PUSH START" appears, hold A and press Right, Up, Left, Down, Right, Down, Left, Up. Release A, hold B and press Right, Up, Left, Down, Right, Down, Left, Up again. Because the cheat counts only correct pressings, but not care about the wrong ones, just hold first A then B and roll over D-Pad buttons for a couple of times while holding it.

(UNI) Minimal game time:
At the Game Time select menu, point the menu cursor to the last option "5 MINUTES". Hold Down on controller 1 and Up + Select on controller 2. Now press B on any controller to change this option to "1 MINUTES". This cheat can be performed with other button combinations on both controllers, since the program combines input from both controllers at the same time.

(UNI) Autoplay:
Select a 2-Player game, at the Game Time select menu hold Up + B on controller 2, then press A on Start on controller 1. As against the "WATCH" mode, you couldn't select the attack of defence strategy, but you still need skip all this screens manually.

Quattro Adventure (Codemasters)

Main menu:

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Super Robin Hood game:

(UNI) Extra 4 lives:
At the title screen, hold Left + A then press Start.
Source: Yakovlev Victor

Boomerang Kid game:

(UNI) Credits:
Immediately after the Codemasters logo very quickly press A, B, Select, Start before the title screen appears.

Treasure Island Dizzy game:

(UNI) An extra rubber snorkel:
At the title screen, hold Down + Left + B + Select, then pres Start.

(UNI) Invulnerability and start from the Island in the Sky:
At the title screen, hold Up + A + B on controller 1 and Up + Right + A + Select on controller 2 at the same time, then pres Start. Note, that if you choose to play with controller 2, you must swap the button codes between controllers too.

Quattro Arcade (Codemasters)

Main menu:

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

C.J's Elephant Antics game:

(UNI) Secret words:
Enter one of following words as a player name for the hi-score screen, to obtain a corresponding effect in the next play.
ZIP-Maximum speed
POW-One-hit weapon
B52-Unlimited bombs
WIZ-Double weapon fire rate
SQC-Another Level
EPX-Another Level
AZS-Another Level
37!-Energy drink, unlimited bombs

F16 Renegade game:

(UNI) Level specific cheats:
There are a secret cheats in every first 9 levels except one. You must hold corresponding button from the table below before the level starts, then keep holding it after level is started and wait until the cheat is triggered. A sound and/or paletter flash will confirm cheat triggering. Some levels change its palette upon entering this cheats.
Level|Button|Effect
1|A|Extra life
2|B|Maximum weapons
3|Select|Extra 5 bombs
4|Down|Extra 5000 score
5|Left|Extra life, dark palette
7|Right|Extra life, dark palette
8|Up|Extra life, dark palette
9|Down|Maximum weapons, Extra 5 bombs, pink palette

(UNI) Level warps:
At the title screen, hold one of the following button combinations, then press Start. This will work only for 1-Player mode, so make sure when you press Select, the cursor menu is at the "1 PLAYER" position.
A-Level 2
B-Level 3
A + B-Level 4
A + B + Select-Level 5

(UNI) Secret words:
Enter one of following words as a player name for the hi-score screen, to obtain a corresponding effect in the next play. Note, that all words should be 7 characters wide, the empty symbols must be filled with spaces, the eight symbol isn't important.
QUATTRO-Extra 9 lives
ARCADE-Maximum weapons
LINUSII-Extra 9 bombs
MIG29-Start from Level 9
WARP17-Start from Level 17

Go! Dizzy Go!:

(UNI) Extra life:
At the title screen, hold B and press Start.

(UNI) World 3warp:
At the title screen, hold Left + A and press Start.

Quattro Sports, Super Sports Challenge (Codemasters)

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

R.B.I. Baseball, Pro Yakyuu - Family Stadium, Atari RBI Baseball (VS)

Japanese version:

(UNI) Debug monitor:
Any time during the game, hold Up + Down on controller 1, then press Right, Left, Down, Up on controller 2. A set of numbers will appear at the top-right corner of the screen. Upper four are represents the address, bottom two are data value at the selected address. Press B on controller 2 to enable address and data edit, change any digit using the D-Pad buttons on controller 2, then press B on controller 2 again to apply edits. You can watch and change any RAM data or watch any ROM data.

(UNI) Password generator:
Your team:
Rival Team:
US Password:


R.B.I. Baseball 2

(UNI) Soft reset:
Press A + B + Select + Start.

(UNI) Ingame cheats:
During the game, press Start to enter the ingame menu. Press Select to switch to the cheat entry mode. Now enter one of the following cheat codes to get corresponding effect. Note, that both players able to use these cheats in it's turns, but both can use it only three times per game, including failed attempts (with one exception, see below).
Up, Down, Left, Right-Does nothing.
Down + A, Up + Left, Select-Soft reset.
A, Up, Right, Down, Up, Select, Select, Right, Up-Instant homerun for the next hitting. Ball traectory will be the same every time you use this cheat.
B, Down, Left, Down, Left, Down, Left, B-Instant ground hit for the next hitting. Ball traectory will be the same every time you use this cheat.
Start, Up, Down, Left, Up, Down, Right, Up, Up, Up, Up, A-If any of the next pitcher delivery cause either "BALL" or "STRIKE", it will be threated as "STRIKE". This works only once until the first "STRIKE".
Select, Down, Down, Down, Down, Up, Down, Up, Up, Right, Select, Down, Down, Down, Select, Select, Select, Left, Left, Select-Hitting editor. You can set up the direction, traectory and force for the next hitting.
Left, Up, Up, Up, Up, Up, Up, Up, Up, Up, Up, Up, Right, Left, Right, A-Increase number of cheat entry attempts by 2, so you can enter more than 3 cheats per game.
Right, Right, Left, Left, Up, Down, Down, Down, Up, Right, Start-Reload current team data to RAM.

R.B.I. Baseball 3

(UNI) Soft reset:
Press A + B + Select + Start.

(UNI) Ingame cheats:
During the game, press Start to enter the ingame menu. Press Select to switch to the cheat entry mode. Now enter one of the following cheat codes to get corresponding effect. Note, that both players able to use these cheats in it's turns, but both can use it only three times per game, including failed attempts (with one exception, see below).
Up, Down, Left, Right-Does nothing.
Down + A, Up + Left, Select-Soft reset.
A, Up, Right, Down, Up, Select, Select, Right, Up-Instant homerun for the next hitting. Ball traectory will be the same every time you use this cheat.
B, Down, Left, Down, Left, Down, Left, B-Instant ground hit for the next hitting. Ball traectory will be the same every time you use this cheat.
Start, Up, Down, Left, Up, Down, Right, Up, Up, Up, Up, A-If any of the next pitcher delivery cause either "BALL" or "STRIKE", it will be threated as "STRIKE". This works only once until the first "STRIKE".
Select, Down, Down, Down, Down, Up, Down, Up, Up, Right, Select, Down, Down, Down, Select, Select, Select, Left, Left, Select-Hitting editor. You can set up the direction, traectory and force for the next hitting.
Left, Up, Up, Up, Up, Up, Up, Up, Up, Up, Up, Up, Right, Left, Right, A-Increase number of cheat entry attempts by 2, so you can enter more than 3 cheats per game.
Right, Right, Left, Left, Up, Down, Down, Down, Up, Right, Start-Reload current team data to RAM.

Racer Mini Yonku - Japan Cup

(UNI) Race only mode:
At the title screen, press A, Up, Left, B, Down, Right, Start. This will skip table game mode and jump directly to the race mode with course select menu.

(UNI) Extra courses:
At the title screen, press Left, Down, A, Right, Up, B, Start. The same as previous, but with two extra hidden courses.

Raid 2020 (Color Dreams)

(UNI) Continue:
After the game over screen, additionally to A hold Down, with this button held no continues is consuming, so you can do unlimited amount of continues.

(UNI) Cheat mode:
During the game hold Up + A on controller 1 and Up on controller 2 at the same time then press B on controller 1. Hold A and press Select to enable invulnerability, or hold B and press Select to skip to the next level.

Raid on Bungeling Bay

(UNI) Secret message:
At the title screen, wait for the demo sequence is started. Press Up + B + Select to return to the title screen with additional secret message added at the bottom of copyright text "BY KIKU"
Source: tcrf.net

Rainbow Islands - The Story of Bubble Bobble 2 (US, Japan)

(UNI) Sound Select:
Press Up, Left, Right, Down, A, B, A, Up when word "START" flashes on the title screen. Press A and B to select a melody, then press Start to play it.

(UNI) World Select:
Press Left, B, Right, Up, Down, Left, Right, B when word "START" flashes on the title screen. Press A and B to select a world, then press Start to play it. This cheat is unlockable at the ending sequence after you beat first 7 worlds.

(UNI) Start with maximum power:
Press Start to pause game play, press Up, Down, Left, Right, A, A, B, B (for the US version) or B, A, A, Up, Down, Down, B, Right (for the Japanese version), then press Start again. A sound will confirm correct code entry. From now on, you will have fast shoes and a double rapid rainbow weapon. This code can only be used one time. After you lose your first life you cannot use it again.

Rainbow Islands - The Story of Bubble Bobble 2 (Europe)

(UNI) Extra 255 continues:
At the title screen, hold Left + A + B + Select and press Start.

Rampage

(UNI) Day Select:
At the title screen, hold B + Select on controller 1, then press B on controller 2. After selecting the mutant, a new option "SECRET COMMAND SELECT DAY" will appear.

Rampart (Jaleco)

(UNI) Soft reset:
During the game, press A + B + Select + Start on controller 1 or controller 2 to jump back to the main game menu. Also this will work after powering the console on and skips the intro screens.

(UNI) Cheat options:
Pause the game, hold A + B + Select on controller 1, then press particular buttons for a corresponding number of times for a described below effects.
On controller 1 Down 5 times-Press Start to hold the game without hiding the screen, press Start one more time to enter the normal Pause screen.
On controller 2 Select 1 time-During 1-Player game, when you sank the ship, the water will change its color to red until next game phase. During 2-Player mode the water in the river will be purple instead of dark blue and it will flow in reverse direction.
On controller 2 Select 2 times or more-During 1-Player game, when you sank the ship, the water will change its color to green until next game phase. During 2-Player mode the water in the river will be light blue instead of dark blue and it will flow in reverse direction.
On controller 2 Select 5 times-Enter the Pause screen and return back to the game, this will complete curren map instantly if you at the Selecting castle phase. If you at the Cannon and Build and repair phases, you must complete them sucessfully in order to apply this cheat.
On controller 2 Select 5 times or more-Enter the Pause screen, press Select on any controller and exit back to the game to instantly complete current game phase. Note, that this cheat doesn't allows you to complete the current phase succesfully, it's just drops countdown timer to zero. This can be combined with the cheat above to speedup the proccess.
On controller 2 Select 10 times or more-This cheat does exactly the same as for 5 pressings cheat, but now you need to press Up on any controller at the Pause screen to enable it.
On controller 2 Select 13 times-Next game will start from the last battle.
On controller 2 Select 20 times or more-In 2-Player game, at the guilotine screen a different execution animation bill be enabled.

Rasaaru Ishii no Childs Quest

(UNI) Cheat options:
Select the continue option, when asked for name, enter "ゆうゆo". Then at the password entry screen, skip first 4 password letters and from the 5th position enter "たいみそ", now hold Up on controller 2 and press one of the following buttons to get corresponding effect:
A on controller 2-Easter egg
B on controller 2-Ending sequence
Start on controller 1-Start a new game with maximum health and money.

Ren & Stimpy Show, The

(UNI) Secret message:
At the game copyrights screen, before the title screen appears, press quickly Up 1 time, Right 1 time, Down 9 times, Left 6 times in any order, just press every button given number of times. To exit to the normal game press Up.

(UNI) Secret items:
Start a new game. At the very first screen of the first level, collect the coil, the socks and the pie items. Throw out 4 coils, 3 socks and 2 pies, so in your possession should left exactly 1 coil, 2 socks and 3 pies. Now go to the very left corner of the screen and fire while walking. If done right, a two secret items with names Jay Bacal and Tony Lau will fall down on the table. The first one gives to you 99 lives, the second one gives to you an unlimited health.

Robin Hood - Prince of Thieves

(UNI) Extra 4 lives:
At the title screen, press A, A, B, A, B. A sound will confirm correct code entry.

(UNI) Extra 6 lives:
At the title screen, press A, A, A, A, B, B, B, A. A sound will confirm correct code entry.

(UNI) Debug mode:
At the title screen, press A, A, A, A, A, A, A, A, B, A, A, A, A, A, A, A, B, A, A, A, A, A, A, B, A, A, A, A, A, B, B, B. A sound will confirm correct code entry. Pause the game to toggle the debug mode on or off. While in the debug mode, press Start to open the debug menu where you can select any locations or jump directly to the fight with bosses. Your HP will be always 100, and periodicly your status will be cleaned and restored automatically, also you can walk through the walls and doors without keys.

(UNI) Version message:
Hold Up + A + B + Select + Start on controller 1, then press Reset. Hold until the version number appears.

(UNI) Credits:
During the game, enter the game menu by pressing Start, then put cursor to the "EXIT" option and press A + Start. A secret credits window will appears.

Robocop 2

(UNI) Level select:
At the title screen, hold Up + Right on controller 1 and Down + Left on controller 2 at the same time. Now by pressing B on controller 1 cycle through levels 0 to 14. Press A to reset level index back to 0. A sound will confirm code triggering after each A or B pressing. Select the "CONTINUE" option to start from the selected level.

Robodemons (Clor Dreams)

(UNI) Continue:
After the game over screen, additionally to A hold Down, with this button held no continues is consuming, so you can do unlimited amount of continues.

(UNI) Cheat mode:
During the game hold Up + A on controller 1 and Up on controller 2 at the same time then press B on controller 1. Hold A and press Select to enable invulnerability, or hold B and press Select to skip to the next level.

Rocketeer, The

(UNI) Secret passwords:
Enter any of this passwords at the Password screen, then start a new game.
169-963-491-During the game press Select + Start to skip current level. Hold A, then press Select + Start to restore health, fuel and ammo for all weapons.
000-000-047-Enables the Cutscene Debug mode. Every frame of animation or message at the cutscenes now will wait for the A button press or hold to continue.

Rocman X (Sachen)

(UNI) Level select:
At the title screen, press Up + A + B + Select on controller 1, then press Down + B.

Rod Land

(UNI) Secret names:
Enter first fairy name as "ICH" and second fairy as "EAT", now press Select through the game to access level select menu.

Roger Clemens MVP Baseball

(UNI) Credits:
At the title screen, press A, A, B, B, Up, Down, Select.

Rollerblade Racer

(UNI) Cheat menu:
During the game, press Start to pause it. Hold Select then press B, A, A, A, a sound will confirm correct code entry. Now press Down or Up to select between options "PAUSED", "SKIP WORLD", "STOP CLOCK" and "RESTART". Press Start to enable selected option.

Rolling Thunder

(UNI) Extra 5 continues:
At the title menu, hold Up + A on controller 2 and Up + B on controller 1 at the same time, then press Start on controller 1.

Route-16 Turbo

(UNI) Credits:
At the title screen, press Up, Up, Up, Left, Left, Left, Down, Down, Down, Right, Right, Right, B, B, B, Start.

SD Battle Oozumou - Heisei Hero Basho

(UNI) Easy mode:
At the title menu, press Up, Left, Down, Right, B, A, A, B. From now in battle you won't be affected by any side effects if HP less than 9.

SD Keiji - Blader

(UNI) Selftests and easters:
Hold one of two combinations of buttons on controller 2 from the table below, press Reset, and then release all buttons. In both cases the programm will perform the PRG and CHR data checksum tests and display it's results. A messages "プログラム  オーケー" will appear after a while if PRG is ok, and "キャラクター オーケー" if CHR test is ok, in other case you will see the message "エラー" instead of "オーケー". Following effects are depending on which button combination you pressed before resetting the console and described below.
Up + Down + Left + Right-After the tests, the program will wait for A on controller 1 press, then perform additinal SRAM test. If SRAM isn't initialized, the message "エラー" will be displayed and SRAM will be reinitialized. In other case message "オーケー" will be displayed and game continues.
Up + A + B-There are two options available here. While the program performing the tests, quickly hold one of the additional button combinations on controller 2 to get the corresponding effects:
Right + A + B-Ending credits will be displayed.
Left + A + B-Maxed out level and other parameters at the start of the new game.

Saint Saiya - Tian Ma Huan Xiang (Nanjing)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Saiyuuki World

(UNI) Cheat mode:
At the title screen, press Up, Down, Up, Down, A. You will obtain extra 99 lightning bolts, powerful shield, high jump and unlimited money. Plus you will be able to skip current level by pressing Up + A + B on controller 1.

Saiyuuki World 2 - Tenjoukai no Majin, Whomp'Em

(UNI) Ending sequence:
Enter the Sound test as described above. Press Down + A + B on controller 1 and controller 2 at the same time.

(UNI) Random stage:
At the stage select screen, press A on controller 1 to run random stage selection mode. Press A on any controller or Start on controller 1 to stop selection and play with selected stage.

(UNI) Extra items:
At the stage select screen, highlight desired level to play, hold one of the following buttons on controller 2 and press A or Start on controller 1 to obtain corresponding items at the beginning of the stage.
Right-Extra 2 ferruls (increase player's punch power, each glove used for 4 punches)
Left-Extra helmet item (decrease player's damage)
Down-Extra 2 ferruls and helmet at the same time.

(UNI) Extra 3 lamps:
During the game, at any level except the first one, press Select then press Up + Down + Left + Right at the same time using combination of the D-Pad buttons on both controllers. For example press Up + Left on controller 1 and Down + Right on controller 2 at the same time. This code works only once per level.

(UNI) Final boss fight:
Pause the game by pressing Select. Оn controller 2 press A, B, Up, Down, Up, Down, A, B, Left, Right, Left, Right, A, B, A, B, A, A, A, A. You will hear the short sound. Press Select again and enter the same cheat code one more time. A confirmation sound will be different. Complete current location and you'll be moved directly to the final boss with full set of weapons.

San Guo Zhi - CaoCao Zhuan (Nanjing, NJ018)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box, but the proper graphics or text was removed from this version of the game. This cheat can be found in a couple of Nanjing games on the same engine.

(UNI) Extra money and exp:
During the game, exit from the town to the world map, press Select to open the map screen, which isn't show anything on the world map. Hold Up + A + Select + Start for a while until you exit back to the world map. Now you'll have an extra 2048 gold and 256 exp.

San Guo Zhi - Qun Xiong Zheng Ba (Asder)

(UNI) Secret moves:
At the "ASDER" logo screen, hold for a while Up + Left + A + B + Select on controller 1. During the game, press one of the following combinations to perform a secret moves, which varies between fighters, but mostly involving a fire.
Select-Wall of fire
A + Select-Fireball
B + Select-Fire jump

Sangokushi II - Haou no Tairiku

(UNI) Ending sequence:
At the title screen, at the player selection menu, on controller 1 hold B then press Left, Right, Right, Left, Down, Up, Up, Down.

(UNI) Max stats for player 1:
Start a new single or two player game. At the leader selection screen, when message "PLAYER 1 SELECT YOUR LEADER" is displaying (don't press A or B), on controller 1 hold Select + Start, then press Up, Down, Up, Down, Left, Right, Left, Right. For all following cheats effect is saved to the SRAM and stay permanent after powering off the console.

(UNI) Max stats for player 2:
Start a new two player game. At the leader selection screen, when message "PLAYER 2 SELECT YOUR LEADER" is displaying (don't press A or B on controller 2), on controller 1 hold Select + Start, then press Up, Left, Down, Right, Left, Up, Right, Down.

(UNI) Unknown:
At the leader selection screen, (doesn't matter if you've pressed A / B or not), on controller 1 hold Select, then press Right, Right, Down, Down, Up, Down, Up, Down.

(UNI) Unknown:
At the leader selection screen, (doesn't matter if you've pressed A / B or not), on controller 1 hold Start, then press Up, Right, Down, Left, Up, Left, Down, Right.

(UNI) Autoplay mode:
At the leader selection screen, press A then select your leader. Now, on controller 1 hold Start then press A to start a new game. All players will be controlled by computer, you can just watch.

(UNI) Warp to the last move:
During player turn, enter the map mode by press Select, then hold Up + Start on controller 1 and press Select again. This will left you only one move to play till the end of your turn.

Sanrio Carnival

(UNI) Puzzle game mode:
At the game selection menu, choose the second option from top. Now, at the description screen hold A + B on controller 2, then press A or Start on controller 1. You can now choose extra 5th "PUZZLE" game mode.

Sanrio Cup - Pon Pon Volley

(UNI) Easy catch:
During the game, hold A + B on controller 2 then press Start on controller 1 to pause the game. Unpause it and for a couple of times you'll be able to catch almost any ball even if it hit the ground already.

Secret Scout (Color Dreams)

(UNI) Level skip:
During the game, hold Up + A on controller 1 and Up on controller 2 at the same time, then press B on controller 1. Hold B and press Select to skip to the next location.

Seikima II - Akuma no Gyakushuu

(UNI) Level select:
At the title screen, press B, A, A, B, A, A, B, A, A, A, B, A, B.

Shanghai

(UNI) Instant credits:
At the title screen, press Up + Left + B + Select. This causes the instant jump right to the credits roll, in other case you should wait while they appear.

Shanghai 2

(UNI) All endings and credits:
At the title screen, hold Right on controller 1 then press A, Start, B, Select, A. The game doesn't care if you press the wrong button, so you can just hold Right and mash all not D-Pad buttons until the ending picture appears. Press A to cycle through all game ending screens. Hold Select then press A to see the credits.

(UNI) Simple alternative tileset:
At the title screen, hold Down + A on controller 1 then press Start. A secret tileset with only 4 different tiles will be used.

(UNI) Auto solve puzzle:
Start a new "SOLITAIRE MODE" game. Click on the "HELP2" button, then click on the "RETRY" option. Hover your cursor over the "OK" option, hold Down + B on controller 2 then press A on controller 1. After restart the puzzle will be automatically solved and you can see corresponding ending picture.

Sheng Huo Lie Zhuan (C & E)

(UNI) Self test:
Hold A + B on controller 1, then press Reset. The game will perform a simple PRG and CHR ROM banking and integrity tests and SRAM initialization. If tests are ok, then game will continue as usual. If something is wrong, the game will stop with the annoying sound on the black screen.

(UNI) Instant battle win:
Hold Left + Select on controller 1, then press Reset. During any battle on the global map with the random encounters, press Start to instantly win.

Sherlock Holmes - Hakushaku Reijou Yuukai Jiken

(UNI) Continue 1:
At the game over screen, press Select + Start on controller 1. You'll be returned to the game with minimum HP and half of money.

(UNI) Continue 2:
At the game over screen, press Right + A + B on controller 2. You'll be returned to the game with full HP, but half of money. Additionally if you hold Left + A + B on controller 1 before press the buttons on the controller 2, you can also keep all your money.

(UNI) Display password:
Pause the game, then press Up + A on controller 2.

Shin 4 Nin Uchi Mahjong - Yakuman Tengoku

(UNI) Clear top 4 list:
In a tournament mode, at the map screen, enter the "TOP 4" option and hold Down + A + B + Select + Start.

Shin Moero!! Pro Yakyuu

(UNI) CHR bankswitch test:
At the game start, a program performs the PRG bankswitching test. If all is right, the game will continue normally. In other case the programm just hangs. You can perform the additional CHR bankswitch test. Just hold A + B on controller 1 and press Reset. This test is working the same way as the PRG bankswitch test, so you still can't see any effects if all is right.

Shin Samurai Spirits 2 - Haoumaru Jigoku Hen

(UNI) JY company's Easter egg:
At the title screen, press Up, Right, Up, Right, Right, Right, Up, Left.

Shingen The Ruler, Takeda Shingen 2

All versions:

(UNI) Unknown:
When player's turn is about to begin, but before you asked how many occupied regions you will give orders to, hold Left + A on controller 2 and one of the following combinations on controller 1. A faint sound will confirm correct code entry.
Right + A + Select-Unknown effect 0
Right + B + Select-Unknown effect 1
Right + A + B + Select-Unknown effect 2

Japanese version:

(UNI) Ending and game over sequences:
Hold Select + Start on controller 1 and press Reset. At the Hot-B logo, release the buttons and hold one of the following combinations to get the corresponding effect. Note, that you can't press Left + Right at the same time on regular controller. Or you need the Famicom system with additional controller in expansion port.
Left + Right + A on controller 2-The ending with Shingen wins
Left + Right + B on controller 2-The Takeda family Game Over
Left + Right + A + B on controller 2-The Katsuori family Game Over

US version:

(UNI) Sound test:
Hold A + B on controller 1 and press Reset. At the Hot-B logo, release the buttons and hold Right + A + B on controller 2. The sound test should appear after the Hot-B logo.

(UNI) Ending and game over sequences:
Hold A + B on controller 1 and press Reset. At the Hot-B logo, release the buttons and hold one of the following combinations to get the corresponding effect. Note, that you can't press Left + Right at the same time on regular controller. Or you need the Famicom system with additional controller in expansion port.
Left + Right + A on controller 2-The ending with Shingen wins
Left + Right + A on controller 2 and A or B or both on controller 1-The ending with Katsuori wins
Left + Right + B on controller 2-The Takeda family Game Over
Left + Right + A + B on controller 2-The Katsuori family Game Over

(UNI) Easter egg:
After the ending sequence is over and message "お わ り" is displayed on the screen, hold A + B + Select + Start on controller 1 and A + B on controller 2 at the same time. The small chibi warrior will appear at the center of the screen. From now you can only reset the console.

Shougi Meikan '92

(UNI) Switch music on or off:
Any time during the game, press A or B on controller 2 to switch the game music on and off.

(UNI) Screen adjust:
Start a new game, select modes and other parameters. Before the game starts, you'll be asked to continue or to select another stage (press A or B is displayed), use the D-Pad buttons on controller 2 to adjust screen position horizontally or vertically.

Shougi Meikan '93

(UNI) Switch music on or off:
Any time during the game, press A or B on controller 2 to switch the game music on and off.

(UNI) Screen adjust:
Start a new game, select modes and other parameters. Before the game starts, you'll be asked to continue or to select another stage (press A or B is displayed), use the D-Pad buttons on controller 2 to adjust screen position horizontally or vertically.

Shougun

(UNI) Extra 21 something:
Start a new game, press Start to pause. Now press Down, Left and Right in any order and then B 2 times. The message will be displayed, after that your something will be 21 instead of 0.

(UNI) Ending sequence:
Start a new game, press Start to pause. Now press Up, Left and Down in any order and then A 2 times.

Shufflepuck Cafe

(UNI) Secret passwords:
You must point and click on the "CHAMPION" label at the main game screen. Select the password option, then enter the following code. There is no correct password confirmation, password is treated as wrong one with the same sound. But there is internal flag toggles. If you enter this code one more time, flag will be toggled back. Now press B to exit the password mode and select any opponent.
326075-No loss game

Shui Hu Shen Shou (Nanjing, NJ019)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Side Pocket

(UNI) Extra 256 balls:
Press Left, Right, Right, B, Right, Left, B, Left, B, Right, Left, B at the challenge screen, after starting the game a sound will confirm correct code entry.

Silva Saga

(UNI) Disable random encounters:
At the title screen, press Left, Left, Right, Right, Up, Down, Up, Down, Select, B. The background color will change. Now during the game you can walk free without random encounters.

(UNI) Secret words:
Enter one of these words as a player name:
ろっくさむ-The name will change it's alphabet from hiragana to katakana: "ロックサム".

Silver Eagle (Sachen)

(UNI) Continue:
After loosing all lives, when "Continue?" option appears, select "Yes" and press Select, A, A, B, A, Up, Select then press Start. You will start from room where you were dead.

(UNI) Title cheats:
At the title screen, when title menu appears, enter one of the following combinations, then press Start to enable corresponding effect.
B, A, Left, Left, A, Left, Right-Level 2 warp
A, A, Left, Right, B, Right, Left-Level 3 warp
B, B, Left, Right, A, Left, Right-Level 4 warp
A, B, Left, Left, B, Left, Left-Ending sequence
Left, B, Right, B, A, Right, Right-Full weapons, unlimited ammo, 255 lives

Simpsons, The - Bart Vs. the Space Mutants

(UNI) Secret items 2a:
The four items mentioned above can be revealed from another place of the second floor on the same stage. Stand on the third trash can on the second floor. Face to the left, jump up, face to the right, jump up again, repeat this one more time, then face to the left and jump up two more times. Now, jump two more times and one of the initials will fall down according to where you faced while jumping: right, right - "RW", right, left - "AW", left, right - "KW" and finally left, left - "JW".

(UNI) Secret item 3:
In the second stage, at the middle of the second floor, there is a gap in a hallway with extra life prize in it (to the right from the gray jumping shoes). Stand agains the gap under the life prize, jump and while mid-air press quickly Up, B, Down. The extra object with the name of Henry Will written in katakana will fall to the left. You can do this as many times as you want, but no more than two extra items at once. Every item worth one level goal.

(UNI) Secret item 2b:
During the mid-level boss fight in the second stage, switch to the X-Ray Specs and remove a Hat from the boss (jump up below the Hat). Instead of Hat item, one of the well known initial items "AW" will appear.

(UNI) Secret item 4:
In the third stage, start to play the lucky roulette mini-game. While picking up a lucky number, do not press B, press A on numbers in following order: 5, 4, 3, 8, 6. A small item with "KMB" initials will float up and down to the right of you.

(UNI) Secret item 5:
In the third stage, enter Fun House and while the door puzzle countdown timer isn't over, you must open the doors in particular order. The doors numbered from left to right and from bottom to top. A bottom-left door index is 1, a top-right door index is 9. So opening order is: 1, 2, 1, 1, 9, 5, 2. A small item with initials "PJB" will floating in the middle of the screen.

(UNI) Secret item 6:
In the fourth stage, reach the tar pit with dinosaur bones. Stand exactly on the edge of the first dinosaur skeleton's neck just before the first floating skull, under the volcano on the background. Jump high up to reach the volcano, repeat this 10 times. A small item with "KAK" letters will appear.

Simpsons, The - Bart Vs. the World

(UNI) Secret message:
This code is identical to the one from the Barbie game by the same developer. Hold Select, then press Reset. While holding Select, immediately after the copyright screen appears, quickly press A, B, Up, Down, Left, Right, A, B. The secret credits message will appear over the top of the copyright screen. Press A + B to return back to the normal copyright screen and back to the game.

(UNI) Debug leftovers:
The second stage levels (Cave and Ice) has a small leftover from the development stage Level Editor. Using D-Pad on controller 2 you can change position of one of the level's static sprite objects, it's always will move the object with index 1 in the static objects array. For the Cave level, for example, this is the spike at the ceiling near the exit of the level. For the Ice level this is one of the floating ice cubes.

Simpsons, The - Bartman Meets Radioactive Man

(UNI) Secret message:
At Acclaim logo screen, before copyright screen appears press quickly Up 1 time, Right 1 time, Down 9 times, Left 6 times in any order and combination, just press every button given number of times. A screen with dedication to the family of Shen Jan Long (one of game programmer) appears. To exit to normal game press Up.

(UNI) Alternative credits background:
Immediately after resetting the game, hold Select until credits appear. Background of credits screen will change from "BARTMAN" graphics to various names.
Source: BMF54123

(UNI) Secret item:
Do the "Alternative credits background" cheat as described above. Start a new game, go right to the Claws and grab "EYES" weapon there (lightning icon), then return to the very first screen of the level. Shot laser from your eyes until counter reaches 6. Go to the right side of the screen, run to the left with acceleration (hold A). When reaches the maximum speed, a pinkish item with letters "CHRISTINE" will drop dwon from the left. Grab it to get 99 lives.

Skate or Die 2 - The Search for Double Trouble

(UNI) Unknown debug:
In the third level there is some debug leftover exist. It check for Start press on controller 2 and refresh some internal arrays, which purpose is unknown for me currently.

Sky Destroyer

(UNI) Invulnerability and slow fire:
Hold Select + Start, then press Reset. When the new game starts, there is no damage will be taken. In addition if you hold A + B before pressing Reset, firing speed will be reduced almost three times.

(UNI) Secret message:
Start a new game then take damage to both left and right wings. Do this three times and at the game over screen Secret message "PRESENTS BY KOBAYASHI & OHTSUKA" will appears.

(UNI) Bonus object Yacht:
At night phase destroy distant enemy ship at horizon at the same time it appears, on very first animation phase (you must shoot forestalling) and you will see floating at horizon yacht. If you shoot it you will be rewarded.

Sky Shark, 1945 (Pirate)

(UNI) Extra 8 lives and bombs:
During the game, press Start, then enter A, B, A, A, A, B, B, A, A, B, A, B, A, A, B, B. If A=0 and B=1, then this is binary numbers $46 and $53 or "FS" in ASCII. You can do this cheat as many times as you want.

Smash T.V.

(UNI) Skip Battles:
Before the battle starts, while the player walking from one room to another by corridor, or from TV studio, hold at least one A on any controller along with at least one Select on any controller. Continue holding until the room is displayed on the screen. If done right, the current battle will be completed and you can collect items or proceed to another room throught any of available exits.

Smurfs, The

(UNI) Secret passwords:
Enter one of the following passwords to start from a desired level.
YJPB-Act 1
YJPC-Act 2
YJPD-Act 3
YJPF-Boss 1
YJPG-Act 4
YJPH-Act 5
YJPJ-Act 6
YJPK-Act 7
YJPL-Boss 2
YJPM-Act 8
YJPN-Act 9
YJPP-Act 10
YJPQ-Boss 3
YJPR-Bonus Mushrooms 1
YJPS-Bonus Mushrooms 2
YJPT-Bonus Mushrooms 3
YJPV-Bonus Bubbles 1
YJPW-Bonus Bubbles 2
YJPX-Bonus Bubbles 3

Snow Bros.

US version:

(UNI) Time Mode:
At the title screen, when message "PRESS START" appears, press Up, Up, Right, Right, Right, Right, Right, Right, Right, Right, Down, Down, Left, Left, Left, Left, Left, Left, Left, Left then hit A or Start.

Somari, Sonic The Hedgehog, Super Sonic 5, Sonic 3D Blast 6 (NT)

(UNI) Cheat menu:
At the title screen, press Left, Down, B, A, Right, Up, A, B, Up, Down, Up, Down. Then start a new game.

Space Hunter

(UNI) Debug mode:
Before entering any planet, hold Right + A + B on controller 2. After entering planet you will earn extra 255 power and at the bottom of the screen will be displayed the current room coordinates.

Space Shuttle Project

(UNI) Stage skip:
At the title screen, press Up, Right, Down, Left, Down, Right, Up. The music will stop to confirm correct code entry. During the game, press Select to skip any level or information screen till the end of the game. You can even skip the starting "security" test.

Spelunker 2 - Yuusha heno Chousen

(UNI) Continue:
At the game over screen, hold Up on controller 2 and then press Start on controller 1. You'll continue at the point where you died and with all items. You can only use it on World 2 & 3.

Spiritual Warfare

(UNI) Secret message:
At the BEACH location (room $F9), there is a hidden staircase at the top-right corner of the beach which lead to the "Super secret bonus room" with developer's credits.
Source: tcrf.net

Splatter House - Wanpaku Graffiti

(UNI) Test mode:
Hold Down + A + B on controller 2 then press Reset.

(UNI) Ending sequence:
Hold Up + A + Select on controller 1 then press Reset.

(UNI) Restore energy:
During the game, press Start to pause it, then press A + B on controller 2. Press Start again to return to game with fully restored energy. This cheat can be used only three times.
Source: Yakovlev Victor

Spy Hunter

(UNI) Pause:
During the game press A on controller 2.

Square no Tom Sawyer

(UNI) Sound test:
Press Up, Up, Down, Down, A, B, Up, Down at the title menu on controller 2. Change radio tuning to play next Song.

(UNI) Secret names:
First you must enter one of the words from the table below as a master name for the Tom, as described in "Secret message" cheat, but there is no need to hold B on controller 2. Return to the game and press B to bring up other navigation menu. Select bottom option "アイテム" ("Items"), then "つかう" ("Use") on item "テント" ("Tent"). This will save your current progress and entered names to the battery backed SRAM. Reset the game (with the Reset button or Soft Reset cheat), then at the title menu enter the Sound Test cheat. But, before entering the last button on controller 2, hold Start on controller 1. If done right, a corresponding effect occurs.
サンプンタイマ-"Three Minutes Timer". Animation of the Tom running from the left to the right side of the screen will take three minutes in total, then hang.
オワリガミタイナ-"Show me the Ending". Ending sequence.
ハンニャカヨケル-"Hannya Kayo Keru". Secret message 1.
ロケットハナビ-"Firework Rocket". Secret message 2.
サルビアノハナ-"Salvia Flower". Secret message 3.
ウチノキンギョ-"House of Goldfish". Secret message 4.

Stanley - The Search for Dr. Livingston

(UNI) Secret passwords:
During the game press Select, then enter the following password:
BCKPQRLC-Ending sequence

Star Force

Japanese version:

(UNI) Invulnerability:
At the title screen, hold combination of buttons that includes Up + A + B and at least one other button on controller 2 and at the same time hold Up + Left + A + B on controller 1, then press Start on controller 1.

Star Luster

Console version:

(UNI) Palette test:
When the title screen stop to scroll and the title name starts to flash with various colors, quickly press Select, B, A, Right, Left, Up, Select, B, Down, Right before it stops flashing. Use Up or Down to change the color, Left or Right to change the region of the screen to clorise.

Arcade version:

(UNI) Starnoid:
The same "Starnoid" easter is present in VS version of this game, but instead of using microphone, obviously, you must press P1 Start and P2 Select + Start at the same time, when low in fuel or got critical damage.

Star Soldier, Star Soldier Special Version

All versions:

(UNI) Different graphics:
At the title screen, shout continuously to the microphone. While shouting, press Select 5 times, then hold Left + Right + A + B + Select combining buttons from both controllers in any combination. While holding all these buttons press Start on any controller to switch this cheat on or off. Release all buttons, then begin a new game. This cheat also can be unlocked by beating the game once. Complete first 16 levels and graphics will switch automatically.

Star Trek V - The Final Frontier (Prototype)

(UNI) Debug features:
At the main game menu, hold Select and press A to enable invincibility. Additionally, hold Start and then press A to enable instant fly boots mode. Hold both Select + Start and then press A to combine both effects.

Star Wars - The Empire Strikes Back

(UNI) Sound test:
When a message "A LONG TIME AGO, IN A GALAXY FAR, FAR AWAY..." is displaying press Left + Select. Press Select to switch between "MUSICAL SEQUENCES", "EMPIRE SOUNDFX" and "DIGITAL SOUNDS" modes.

Sted - Iseki Wakusei no Yabou

(UNI) SRAM clear:
Hold A + B on controller 2, then press Reset.

Street/Master Fighter II/III - The World Warriors (YOKO)

All versions:

(UNI) Zangief ending sequence:
At the title screen, press B, A, A, A, Left, Right, Start.

(UNI) Zangief VS. Vega:
At the title screen, press B, A, A, A, Down, Down, Start.

YOKO version:

(UNI) Unlimited health bar:
At the title screen press Left, Left, B, A, A, Left.
Thanks to Kitsune for corrections.

Street Fighter III

(UNI) Test Mode:
Hold B + Select + Start, then press Reset. After a while the self-test screen will appear. Continue holding the buttons to see this screen. It will shows the results of PRG/CHR CRC tests, mirroring modes test and IRQ test. When you release the buttons, the game will continue its normal operation. Test is similar to the World Hero test. Also, Mari Street Fighter test mode crashes, the rest of tests are show CHR and mirroring errors for all versions. It seems, that all known versions are hacks of the one unknown version.

(UNI) Two player mode:
During the single player game, press A + B on controller 2 to stop current fight and jump directly to the two player mode select screen.

Strider

(UNI) Password generator:
Shift:
Level:
Keys:
Boots:
Red Dragon:
Plasma Arrow:
Data Files:
Analyzed Data Files:
Unk:
Password:


Strike Wolf (TXC)

(UNI) Level select:
At the title screen, when title animation is stops, press B up to 8 to select desired level number, then enter activation code Select, Right, Right, Select, Right, Right and begin a new game.

(UNI) Invulnerability and infinite ammo:
At the "PUSH START BUTTON OR..." screen, press B, Select, Select, Select, B, Left, B, Down, Up, Start.

StudyBox

(UNI) Test Mode:
Hold A then press Reset. The meaning of this mode is unknown.

(UNI) Memory Check:
Hold B then press Reset. The game will perform the complete ROM/RAM test and displays the results. Also it will perform printer test with output to the printer.

(UNI) Touch Panel Test:
Hold B + Select then press Reset. Now you cat test the regular controllers and additional touch-screen controller if you lucky enough to have one.

(UNI) Auto Mode:
Hold Right + Select + Start then press Reset. The meaning of this mode is unknown.

Stunt Kids

(UNI) Title Screen Cheats:
At the title screen, enter one of the following combinations to activate the corresponding effects:
Up, Down, Left, Right-Extra life
Right, Left, Right, Right, Left, Left, Right, Left-Level 2 Warp
Select, Right, Down, Left, Up, Left, Right, Select-Infinite Jump
Select, Right, Select, Down, Select, Left, Select, Up-Infinite Time
Left, Right, Select, Right, Left, Select, Up, Down-Level 2 Warp and No damage from water and active enemies.
Up, Down, Select, Select, Up, Down, Down, Right-Level 1 Hard stages Warp
Right, Right, Left, Right, Select, Right, Left, Left-Extra 6 Nitro
Right, Up, Left, Up, Right, Up, Select, Up-Extra 3 Nitro

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Sugoro Quest - Dice no Senshitachi

(UNI) SRAM clear:
Choose the Continue option at the title menu, hold Select, then press Start. Instead of game loading, all SRAM saves will be erased and game rebooted.

(UNI) Secret minigame:
Start a new game. At the main game menu set cursor to the first option "おうさまにあう" ("Meet the King"), then hold Right + A + Select and keep holding it until a new dialog is start. A king will propose you to play a simple gambling dice game where you can earn or loose some money.

Summer Carnival '92 - Recca

(UNI) Stage select:
Do the "sound test" cheat, then hold A + B and press Select + Start. Each time you do press this a stage number increased by 1. You can select any level including second missions (starts from 4th stage) and ending (12th stage). Level number warps back to 1 when exceeded 12.

Super Chinese 3

(UNI) Secret passwords:
あいう-Music test
かきく-Start with maximum Level and Power
さしす-Credits
たちつ-Start with maximum Level and Power (another code)
ぱぴぷ-Movie test
なにぬ-Message test

Super Contra 3, Contra Spirits

(UNI) JY company's Easter egg:
Press Up, Up, Up, Up, Down, Down, Down, Down, Left, Left, Right, Right before the title screen.

(UNI) Stage select:
At the stage info and score screen, before the level starts, press A + B + Select.

Super Contra 7

(UNI) Stage select:
At the title screen menu, hold Down on controller 1, then press B to increase level number up to 5 level, or pres A to decrease it to 1.

Super Contra X (TXC)

(UNI) Borrow life:
Just like in original, in 2-Player mode, press A + B either on controller 1 or controller 2 after loosing all lives to borrow lives from another player.

(UNI) Extra 30 lives:
At the title screen menu, press A 5 times, hold Up and press B 13 times, then start a new game.

Super Donkey Kong 2 (NT)

(UNI) Easter egg:
At the title screen, press Left, Left, Down, Up, Down, Left, Right, Up, Right, Left. There is another way to see this cheat. At the title screen, press A + B + Select, a password screen will appear. Enter only one available password: "STAYCOOL" for original version or "HLSP1129" for pirated version.

(UNI) Return to the Title screen:
Pause the game then press Select.

Super Donkey Kong (NT, Ei-How Yang)

(UNI) Stage select:
At the title screen, press A + B + Select.

Super Glove Ball

(UNI) Continue:
After game over, press Select, A, Select, B, Select, A on controller 1 or if the Power Glove is connected, enter the number code on the extra number buttons: "714936". Press Start to start a new game with last player level. Only works for levels above 1 and only 4 times.

(UNI) Stage select:
At the title screen, press Up, Left, Down, A, Right, A, B, A on controller 1 or if the Power Glove is connected, enter the number code on the extra number buttons: "6547407". The number appears at the middle-top of the screen. Pres Select to increase it from 0 to 9. Press Start to start with corresponding level.

Super Mario World

(UNI) Level select:
Press Select, Select, Select, Select, Select, B, B on the map mode. Then press Select to enter a Level select screen.

(UNI) JY company's Easter egg:
Press Up, Right, A, Down, Right, B, Up, Left on pause during the game.

Super Momotarou Dentetsu

(UNI) Secret words:
Start a new game for 4 players, no matter which ones will be player or CPU controlled. Enter following names for each player.
1P:おん
2P:がく
3P:しつ
4P:へいく
-Sound test

Super Pang

(UNI) Extra 20 lives:
At the title menu, press A + B + Select + Start.

(UNI) Easter egg:
Pause the game, then press A, B, Up, Down, B, A, Down, Up.

Super Pang 2

(UNI) Extra 20 lives:
At the title menu, press A + B + Select + Start.

(UNI) Stage select:
At the title menu, press Right + A + B or Down + A + B on controller 1 to select a game stage.

(UNI) Easter egg:
Pause the game, then press A, B, Up, Down, B, A, Down, Up.

Super Pinball

(UNI) Instant gate open:
When in the third screen, where you must open the gates, just press A on controller 2 to open it instantly.

(UNI) Secret message 1:
Hold Down + B + Select + Start on controller 1 and Up + A on controller 2 at the same time, then press Reset. The first part of author's names will be displayed with a car and a bikini girl on the backround, the same as you win the game.

(UNI) Secret message 2:
Hold Right + A + Select + Start on controller 1 and Left + A + B on controller 2 at the same time, then press Reset. The second part of author's name on the same background.

Super Rugby

(UNI) Secret words:
Enter following word as a team name in a League mode:
TESSUE-The final match with the "BLACKS" team. Also the team name will change to "ZURU". The person "TESSUE MAN KOIE" mentioned in the staff roll in "SPECIAL THANKS" part.

Super Shinobi

(UNI) Debug feature:
Pause the game, press A + B first, then press Up, Left, Down, Right, A, A, B. Use the D-Pad buttons to move throught the level. Press Start to continue from the selected point, press %%pS% to skip to the next level.
Source: Yakovlev Victor

Super Spike V'Ball, US Championship V'Ball

(UNI) Watch mode:
At the game mode select screen, point the menu cursor to the third option ("1 PLAYER VS 1 PLAYER"), then hold A + B on controller 2 and press Select or Down on controller 1 until the menu cursor points to the sixth invisible menu option. Press Start to start a "CPU vs CPU" match. In the US version, a character select option in this mode unavailable, state select crashes the game, so you can only use "CONFIGURATION" and "GAME START" options. The Japanese version of this game doesn't crash there, however these options are unavailable too.

(UNI) Track ball option:
The Japanese version there is a special option in the configuration menu "TRACK BALL". In the US version this configuration option is hidden. But if you at the "CONFIGURATION" menu point cursor to the "MUSIC" option, then hold A + B on controller 2 and press Select or Down on controller 1, a new option will appear.

Super Sprint

Japanese version:

(UNI) Continue:
Power the console off, hold A + B on controller 1, then power it on again. A colourful infinity simbol will appear at the first logo screen. Now your continues will be unlimited.

Super Turrican

(UNI) Invulnerability:
At the "Highscore" screen press Select, Left, Up, Right, Down, Left, Up, Right, Down, Select. A sound will confirm correct code entry. Then return to main menu and start the game.

(UNI) Swap controls:
At the "Options" screen point cursor to the "EXIT" and press Right 44 times. This will swap the Fire and the Jump buttons.

Super Xevious - Gump no Nazo

(UNI) Level select:
Start a new game, before destroying any enemy press Start to pause it. Then press Up, Down, Left, Right, A, B. Enter one of the passwords to get to the desired level.
6974-Level 2
1797-Level 3
5328-Level 4
3580-Level 5
6541-Level 6
3024-Level 7

Superman

Japanese version:

(UNI) Different blood type:
In the Japanese version, you need to enter your name and select a blood type before the game start. Depending on selected blood type you'll get the different parameters to your character. The available blood types are RH+ and A, B, 0 and AB. While selecting the blood type, press Up + A + B on controller 2 and RH will change to RH-, now the whole set of blood types will be different and its parameters are higher than RH+.

Swamp Thing

(UNI) Extra live 1:
In Level 3, during the boss fight (a bat), pause the game, then press Left + A + Select. The scores and lives string in the upper-left corner of the screen will change to "ALISON". The secret message can be seen by doing this cheat any time during the game, but only in this particular place it will add a life.

(UNI) Extra live 2:
In Level 4, walk right and up on the platforms. Reach the first stone block with scary face and two flares. Stand just between them at the top of that block. Pause the game and press Right + A + Select. The scores and lives string in the upper-left corner of the screen will change to "BRITTANY". The secret message can be seen by doing this cheat any time during the game, but only in this particular place it will add a life.

Swords and Serpents

(UNI) Level select:
Start a new game. While exploring the dungeon hold A, hold Up, press B once, release Up, hold Right, press B once, release Right, hold Left, press B once, release Left, hold Down, press B once, release Down, hold Select, and finally press Start, then release all buttons. The message "DUNGEON LEVEL 1" will appear. Change it from 1 to 16 and press Start to jump directly to selected dungeon level.

T & C 2 - Thrilla's Surfari

(UNI) Infinite lives and stage skip:
At the title screen, press Left, Up, Right, Up, Right, Down, A. During the game, except bosses, press Select to skip to the next level. To skip from boss level, press Select at the stage name screen.
Thanks to Kitsune for corrections.

Tag Team Pro-Wrestling, Tag Team Wrestling, Special Tag Team Pro-Wrestling

(UNI) Fan resque:
There are two team members for each side in this game. Two are on the ring, and two is waiting outside of the ring. When one of the fighters on the ring is in trouble (kept in the air or hugged), then other fighter should kick its opponent with bare hands to resque its team member. But they won't help if you huggen on the floor. To make it help in this case too, hold A + B on controller 2 and shout continuosly to the microphone, the second fighter will run and kick your opponent with a large fan. This can be done only in single player mode. This cheat is present also in the US version, but can't be used due to lack of the microphone on controller 2.

Tai Kong Huan Xiang (Nanjing, NJ016)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Taito Basketball, Ultimate Basketball

(UNI) Speedup timer:
Hold Down + A on controller 2 then press Reset. Now, timer in game will be 2 times faster.

Taito Chase H.Q.

(UNI) Instant Stage Complete:
During the game, press Down + A + B + Start on controller 2.

Taito Grand Prix - Eikou heno License

(UNI) Secret words:
Enter one of following words as a player name:
MAX502KM-Strongest car parameters.
Info from ReyVGM
........-This player name will trigger an additional cheat test. Before any race at the "START" position, press Start between second and third countdown signals (when only the first semaphore light is blue). Then on controller 2, press A once, B 9 times, A 8 times, B 7 times, A 10 times, B 9 times, A 28 times, and finally B 34 times. Unpause to play all races with no car collision detect and unlimited time. Note, that code denotes some date, 1987/10/9, thus which 28 and 34 may mean is unknown.

(UNI) Selft test:
Hold Up + Down + Left + Right on controller 2 then press Reset. The screen will remain blue until you press A on controller 1. Then simple WRAM test will be performed. If data isn't match (from $7F80 to $7FFF, first byte is $55, last is $AA, the rest is $00), then "NG" on the pink background will be displayed and held. If match, then "OK" will be displayed for a short time on the green background and game continues to boot as usual.

Taiyou no Shinden - Asteka 2, Tombs and Treasure

(UNI) Sound test:
Hold A + B on controller 1 and press Reset.

Taiwan Mahjoing II

(UNI) Easter egg:
During game, during player's turn, press A, A, B, Right, A, Left, B, Down, A, Up on controller 2.

Takeda Shingen

(UNI) Cheats mode:
Start a game, and enter the main menu. There are 12 menu items. Each menu item has its index counting from left to right starting from top row, so upper-left menu item has index 0 and bottom-right menu item has index 11. Every time when you press A to enter the menu item and then press B to back to the menu, the menu item index is adding to the ring-buffer, so you could enter the code sequences like a button cheat codes just by entering and exitting various menu items. Enter and exit the menu items in one of the sequences from the table below, then press Start to apply the code. A sound and a corresponding message will confirm correct code entry. The sequence is resetting every time game switches to the next day. Note, that if you enter and exit to the menu item 1 ("Mines"), the game automatically jumps to the next day most of time, but there is game states, where you can enter and exit menu item 1 without switching the day, so to enter very first cheat code you must wait for this particular game state (ram address $04BC value should be $01).
1,1,1,1,1,1,1,1-"かくしきんざんを はっけん" ("Every mine is opened") Max out the mines counter in the current town.
9,11,9,11-"ばとるぱすもーどにはいりました" ("Battle pass mode enter") Skips the battle phase, all battles will be automatically played by CPUs and only the results table will be displayed.
0,9,5,9,10,9-"もーど 4にはいりました" ("Mode 4 enabled") Gives the ability for long-range shoot to the main character.
8,10,8,10-"ばとるぱすもーどはかいしょされました" ("Battle pass mode exit") Return back to normal battle mode.
8,5,2,0,5,10-"もーど 1にはいりました" ("Mode 1 enabled") In this mode, during battle, on controller 2, hold A before the end of the player's turn to loose the battle instantly, hold B to win the battle instead, or any other button to flee from battle.
0,4,8,9,10,6,2-"もーど 2にはいりました" ("Mode 2 enabled") Doubles the score at the end of the battle.
10,8,7,5,2,0-"もーど 3にはいりました" ("Mode 3 enabled") Gives an extra round in battle to the cpu controlled units.
3,3,6,11,11,7,0,8-"もーど99にはいりました" ("Mode 99 enabled") When all player's towns are defeated, the CPU will continue playing by itself instead of game over.
4,5,6,7,7,7-"もーど 5にはいりました" ("Mode 5 enabled") Gives an extra round in battle to player controlled units.

Takeshi no Sengoku Fuuunji

(UNI) CPU controlled players:
Normally, all players are meant to be controlled by human. Start a new "SENGOKU GAME", when asked "How many players would you like?", choose the number of players, but before pressing A on controller 1, hold Up + Left + B on controller 2. You'll be asked for another question, "How many human players would you like?", so you can select from one to four human controlled players, the rest of the players will be CPU controlled.

(UNI) Watch mode:
Start a new "SENGOKU GAME", when asked "How many players would you like?", hold Down + Right + A + B on controller 2, then press A on controller 1. The new game selecting menu will appear. You can choose from 5 different games to watch. All of them will be played by four CPU controlled players.

Tantei Jinguuji Saburou - Toki no Sugiyuku Mama ni

(UNI) Ending sequence:
At the password entry screen, first enter the password "1028", when returned to the password entry screen again, enter the password "0905". The ending sequence will begin.

Tasac

(UNI) Invulnerability:
At the title screen, press Up, A, Left, B, Down, B, Right, A, B, B, A.

Tashiro Masashi no Princess ga Ippai

(UNI) Extra 1800 health:
During the game, hold A + B on controller 2 and shout to the microphone on the controller 2. The message box with a boy shouting "Papa, go!" will appear. This trick work only once per level.

Tatakae!! Rahmen Man - Sakuretsu Choujin 102 Gei

(UNI) Secret passwords:
とおる-Continue?
ひろゆき-Continue?
かみや-Continue?
まにわ-Continue?

Tecmo Bowl

(UNI) Password generator:
Play as:
Play with:
Played:Indianapolis
Miami
Cleveland
Denver
Seattle
Los Angeles
Washington
San Francisco
Dallas
New York
Chikago
Minnesota
Team select:
Password:


Tecmo Super Bowl

(UNI) Ingame hold and delay frames:
Any time during the starting logos or intro, before the title screen appears, press Down 7 times on controller 1. If done right, any time during the game now, hold Select and press A to hold the game or press B to slow down the framerate in 8 times.

Tecmo World Cup Soccer

(UNI) Password generator:
Play as:
Play with:
Played:Brazil
W.Germany
Italy
Holland
Argentina
Soviet
Uruguay
Poland
England
Spain
Colombia
Scotland
France
USA
Korea
Japan
Team select:
Password Japan:
Password Europe:


Teenage Mutant Ninja Turtles II - The Arcade Game, Teenage Mutant Hero Turtles II - The Arcade Game, Teenage Mutant Ninja Turtles (Japan)

Japanese version:

(UNI) Extra 10 lives:
At the title screen, press Right, Right, Right, B, B, B, A, A, A, Start before the demonstration starts.

(UNI) Stage Select:
At the title screen, press Left, Left, Left, B, B, B, A, A, A, Start before the demonstration starts.

(UNI) Stage Select, extra 10 lives:
At the title screen, press Left, Right, B, B, B, A, A, A, Start before the demonstration starts.

Teenage Mutant Ninja Turtles - Tournament Fighters

(UNI) Player 2 match skip:
The second player can instantly stop the current battle either in "STORY" or "VS CPU" modes and jump directly to the player select screen of the "VS PLAYER" mode just by press Start on controller 2. However, this doesn't work in "BONUS GAME" while in "STORY" mode. To do this trick in any modes, including "BONUS GAME", press Up + A + B on controller 2 instead.

Tekken 2

(UNI) JY company's Easter egg:
Press Up, Right, Up, Right, Right, Right, Up, Left at the title screen.

Terminator, The

(UNI) Infinite lives and level skip:
During the game, on controller 2 press B, B, Up, Left, A. A sound will confirm correct code entry. From now you will have an infinite lives and can skip current level by pressing Start on controller 1.

Tetrastar - The Fighter

(UNI) Cheat menu:
At the title screen, hold A + B and press Start to the "Sound" option.
Set "00" sound index and press Down to enable "Sampling" mode, allows you to play digital samples.
Set "65" sound index and "02" sampling index and press Down to enable "rest" option, allows you to increase life number up to 9.
Set "68" sound index, "0B" sampling index, "09" rest index and press Down to enable "Phoenix" option, allows you to enable/disable full invulnerability.
By pressing Right change repeatedly "phoenix" option until it stops changing in "on" position, then press Left two times to switch to "off" and "on" position again, then hold Select and press Down to enable "stage" and "visual" options, allows you to select game level or play cut scene.

Tetris (Nintendo)

(UNI) Soft reset:
During the game only, press A + B + Select + Start to reset the game back to the copyright logo and the title screen.

Tetris (Tengen)

Arcade version:

(UNI) Hi-score clear:
At the title screen, press Up + Down + A + B + Select at the same time, you can combine the different buttons on both controllers, just press at least one of that buttons on any controller.

(UNI) Hi-score view:
At the title screen, press B, A, B, A, Select, Select on any controller.

Tetsudou Ou - Famicom Boardgame

(UNI) Instant game over:
During the game, press Left + Select on controller 1, then press A to over the game, or B to continue the game.

Thexder

(UNI) Credits:
At the title screen, press Up, Right, Down, Left, Up, Right, Down, Left, Up, Left, Down, Right, Up, Right, Down, Left, Up, Right, Down, Left, Up, Right, Down, Left, Up on controller 1, but when entering code sequence do not release previous pressed button before next one is not pressed. For example: hold Up, hold Right, release Up, hold Down, release Right and so on.

(UNI) Ending sequence:
Power the console on, then on controller 1 hold Left + A, press Reset, release the buttons, hold Right + A, press Reset, release the buttons, hold Up + A, press Reset, release the buttons, hold Down + A, press Reset, and finally hold Start then press Reset.

Thomas the Tank Engine and Friends (Prototype)

(UNI) Soft reset:
Any time during the game press A + B + Select + Start.

Thunder Warrior (Micro Genius)

(UNI) Extra 6 lives:
At the "TXC" copyright screen, press Select up to 6 times to get up to 6 lives at the game start. There was another cheat, if you press Select at least one time, you can press the D-Pad buttons to increase or decrease the starting level number, but instead all values are reinitialising later and doesn't effect the starting level.

Thunderbirds

(UNI) Frame advance mode:
Any time during the game, hold B + Select to stop game operation. Press any other button for a short time to advance frame by frame.

Thunderbolt 2 - Fighting Plane (Game Tech, Open Corp.)

(UNI) Extra 10 lives:
At the starting title animation, before the title screen appears, quickly press Left, A, Right, B, Up, Select, Down, Start and start a new game. The code checking routine only check for the correct button pressings and ignores the wrong ones, so you can enter this code just by quickly mashing all buttons a couple of times before the title appears and press Start. This cheat can be performed in different way. At the game over screen, press A + B + Select, then continue the game.

Thundercade

(UNI) Test menu:
Power the the game on, wait for the demonstration starts, press A to skip it or wait until it finishes. Repeat this 4 times. After the fourth demo level, don't touch any buttons and wait until the title name will scroll down up, stand still and a "blinking" animation will follow on the title name from left to right. Here is a question of timing now, you must press A button exactly the same time as the "blinking" animation starts, but before it passed the "T" letter of the name. If done in the right moment, the Debug menu will appear. The first and the second options does nothing. Select any of the remaining options, press Start, then select a number and press Start again to start a desired level or hear the sounds.

Time Diver Eon Man (Prototype), Time Diver Avenger (Nitra)

(UNI) Invulnerability:
At the title screen, when message "PUSH START BUTTON" appears, press B, A, Right, Left, Right, Left, Down, Up, B, A, Right, Left, Right, Left, Down, Up, B, A, Right, Left, Right, Left, Down, Up, B, A, Right, Left, Right, Left, Down, Up. A sound will confirm correct code entry. From now, you'll be invulnerable for regular attack and enemies, but still able to die on the spikes or energy beams on the floor.

(UNI) Stage select:
During the game, press Start to pause it, then enter A, B, Right, Down, Left, Up, Right, B, A, B, Right, Down, Left, Up, Right, B, A, B, Right, Down, Left, Up, Right, B, A, B, Right, Down, Left, Up, Right, B. A sound will confirm correct code entry. Now, press Up or Down to select one of 31 available levels and press Start to start to play.

Time Zone

(UNI) Extra 30 lives:
Hold A + B on controller 2, then press Reset. Then just start a new game.

Tiny Toon Adventures

All versions:

(UNI) Stage select:
At the title screen, press A, A, A, B, B, B, Select, Select, Select, A, Start. Choose level by pressing Up or Down then press Start.

Japanese version:

(UNI) Stage select and no damage:
At the title screen, press Up, Right, Down, Left, Up, Right, Down, Left, B, A, Select, Select, Select, Start. This cheat is identical to the regular one for the Stage select with additional option to switch "NO DAMAGE" modes or and off by pressing Select on the Stage select screen.

Tiny Toon Adventures 6

(UNI) JY company's Easter egg and secret Password screen:
At the title screen, press Down, Down, Left, Up, Right, Left, Up, Down. You can enter one of following passwords to access another levels: 2418, 7449, 3065, 8914, 3185.

(UNI) Debug leftovers:
During the game, press A or B on controller 2 to disable objects handling. All sprites, including the main character will disappear.

Tiny Toon Adventures Cartoon Workshop

(UNI) Hidden credits:
At the title screen, press Up, Down, Left, Right.

Titan

(UNI) Suicide:
During the game, press A + B on controller 2 to commit suicide.

(UNI) Sound test:
Hold Down + A + B + Select + Start on controller 1, then press Reset.

(UNI) Extra 15 lives and Level 80:
Hold Down + A + B + Select + Start on controller 1 and A + B on controller 2 simultaneously, then press Reset and release all buttons. Beat the secret final round to obtain a secret password in addition to the regular one and see the ending.

(UNI) Extra 15 lives and Level 80 and level skip:
Do previous cheat, while still holding buttons on controller 2, release buttons on controller 1 and use it to enter sequence A, A, A, B, B, B, A, A, A, then press any other button to complete the sequence. During the game press Down + A + B + Select + Start on controller 1 to instantly win current round and see the ending.

TM Network - Live in Power Bowl

(UNI) Sound test:
Start a new game, at the begining on the 5F in the record studio, investigate PC in the middle of the room, then enter left door. Investigate a red poster, newspaper on the right and mixer. Leave this room, use MUE access on PC, go to the left room again, use MUE on mixer and telephone. Now you can leave the room. Go to 1F in the lobby and ask the girl the second option twice and the third option once. When return back to 5F, wait for conversation is over, use MUE access on PC again. A music will be changed, skip first four dialog messages from Kine, Usi, Komuro and from the player's character. There will be a pause for about 6-5 seconds with blank dialog window before the next portion of conversations. During this pause, hold Select for a second or two to switch the game to the sound test mode. Now hold Up/Down to increase/decrease music speed, press Left or Right to play some sound effects. Hold Start, press B, A, B, A, then release Start to change the music track. Repeat this up to 11 times to listen all available tracks. After listening the last music track, or if either A, B or Select are pressed, the game will continue.

Tokoro San no Mamoru mo Semeru mo

(UNI) Level select and Invincibility:
At the title screen, press Up, Down, Down, B, Right, A, Left, then hold B and press A up to 14 times to select a level or press A + Start for invincibility.

Toobin'

(UNI) Level skip:
During the game, press Start to pause it. Press A + B + Select once, Up + A + B once, and Left + A + Start once in any order. If done right, on pause you can press Select to skip to the next river, or press Up to skip to the next class.

Top Rider

(UNI) Change controls:
Normally game works only with a special controller "Top Rider". You can only select the menu items with normal controller. At the title screen, press A, B, Right, Down, Left, Up, Right, B, A on controller 2. The game will start immediately. From now you can control the bike with normal controllers instead of "Top Rider" special controller.

(UNI) Secret names:
Enter one of this names in GRANPRIX mode.
TAKUAN-WORLD CHAMPIONSHIP R1 GRAN PRIX YUGOSLAVIA
MISOZUKE-WORLD CHAMPIONSHIP R5 GRAN PRIZ SWEDEN
MOMIMAN-Disable obstacle collision detection, the road still slow down the speed.
TONBURI-Black and White mode.
YATUHASI-Slowdown mode.

Touch Down Fever

(UNI) Formation debug:
During the game, when in formation select mode, press Select to pause the game, then hold Select on controller 1, while holding this button, press B on controller 2 to toggle the formation index display on and off.

(UNI) Sound test:
After completing the game, when the staff roll is over, at the "PRESENTED BY KAC" screen press Up, Down, A, B, Left, Right, B, A, Select, Start. Now press Up or Down to select a music track, press A or B to start or stop playing accordingly.

Touhou Kenbun Roku

(UNI) Sound test:
Hold A on controller 2, then press Reset.
Source: tcrf.net

(UNI) Ending sequence:
Hold B on controller 2, then press Reset.

Toukon Club

(UNI) Secret passwords:
3708-4871-Training mode.

Tokyo Pachi Slot Adventure

(UNI) Permanent luck:
During the game, select any slot machine, insert 3 coins and before press Down to run the slots, hold A + B + Select + Start. You'll always be winner.

(UNI) Secret passwords:
のすけはねている-Continue from previously played game if you don't press Reset.

Toy Story

(UNI) Stage select:
At the title screen, press A + B + Select on controller 1.

Tower of Druaga, The

(UNI) Items and max level select:
Normally, the game allows you to select any stage to continue from the first one to the last where you died. But, if at the title screen, you press Up, Down, Left, Right, Down, Up, Right, Left, Left, Right, Down, Up, Right, Left, Up, Down and before pressing the last button, hold A on controller 1 and Left + B on controller 2 at the same time, then enter the "CONTINUE" option, you can not only select any level to play, but you can get any of possible items. There are two ways to add an item to your pocket: at the "FLOOR" select screen or during the game. In the first case, press Up or Down on controller 1 to change the floor number as well as the corresponding item number. In the second case, during the game press Up or Down on controller 2 to change the item number as well, but this time there is no indication what item you currently selecting. In both cases, press A or B on controller 2 to put or remove a corresponding item. If you press A on controller 2 at index 60, all possible items will be added at once.

Toxic Crusaders

(UNI) Easter egg 1:
At the Level 2, before the full moon rise, press Up + A + B on controller 2 to turn the moon on the backroung to the red color.

(UNI) Easter egg 2:
During the third level boss Bonehead fight, on controller 2, press Up, Right, Down, Left, Up, Right, Down, Left to make a burger item to fall down. Unfortunately, it's impossible to pick this item up, so it will disappear after a while.

Trolls on Treasure Island

(UNI) Level skip:
During the game, press Up + Down on controller 1 or controller 2 to instantly complete current level.

Tsuppari Wars

(UNI) Secret map:
At the Sammy logo screen, hold A + B on controller 2 and eaither A + Start or B + Select on controller 1 at the same time. A sound will confirm correct code entry. Now, select the second game mode from the title menu. You'll be able to select 8th, the secret map. Also, if B + Select is pressed on controller 1, during the first game mode, at the end of your move the cheat will alter some of your parameters, which appears to be zero at that time in range 1 to 7 randomly.

Tsuri Kichi Sanpei - Blue Marlin Hen

(UNI) Secret words:
Start the game and reach the map mode. While moving cursor upon the grid with the letters, press A on the letters in particular order to choose one of cheats described below. The buttons are added into internal buffer up to 8 letters. All secret sequences are shorter than 8 letters, the rest of string is filled with zeroes. If you missing something, you can clear buffer by pressing A off the grid, then start again if total count of pressings is divisible by 8. After entering one of the words, just press Start. Note: you can enter only one word at the time, for another cheat you should reset the console.
OWARI-Ending Sequence.
YUSYO-"Famicom International Billfish Tournament 1988" instant win, then ending sequence.
ZANNEN-"Famicom International Billfish Tournament 1988" instant fail.
SPEED-Increase timer a lot.
DEBUG-Fish area data is replacing with the complete grid of various fishing points, which can be used for debugging of various fish catch on the fishing area depending only from fishing point.

Tsuru Pika Hagemaru - Mezase! Tsuru Seko no Akashi

(UNI) Ending sequence:
Start a new game, during the initro screen hold Up + A + B on controller 2 and wait until it's over. After intro, the game will jump directly to the final game chapter. Check your house, then go to the building in the bottom-right corner to see the ending sequence.

(UNI) Sound test:
During the game, at the polar bear quiz or at the final boss battle then the girl is singing, while the game is awaiting for the player's input, on controller 2, hold A + B and press Up or Down to listen to the music, press Left or Right to listen to the sound effects. There are two more buttons is used, A and B increasing some variables, but they are unused in this game now, so must be this whole routine is a debug leftover.

TwinBee 3 - Poko Poko Dai Maou

(UNI) Music test:
At the title menu, select "SETTINGS" ("せってい") then hold Up + Left on controller 2 and press Start on controller 1. Continue holding buttons on controller 2 until the Music Test screen appears.

Uchuu Keibitai SDF

(UNI) Controls and soundtest menu:
At the title screen, hold A + B then press Start or Select.

Ugadayka (Chudov)

(UNI) Secret message:
During the game, when no tries is left and you asked wether you want over or continue the game (press Start or Select), press Right + A, a sound will be heard, now you can press Start to return back to the menu or press Left + B to see the developer's message.

Ultimate Mortal Kombat 3 (NT)

14 people version:

(UNI) Easter egg:
At the difficult select screen, press Up, Up, Up, Down, Down, Down, Left, Right.

Ultimate Mortal Kombat 4 (NT), Mortal Kombat 4 (NT)

Ultimate version:

(UNI) Easter egg:
At the difficult select screen, press Right, Right, Right, Left, Left, Left.

Ultimate Stuntman

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

Ultraman Club 2 - Kaettekita Ultraman Club

(UNI) Sound test:
Beat the game, after the ending sequence and credits roll are displayed, at the picture with the "END" message, press A + B on controller 2.

(UNI) Easter egg:
During the credits roll, use the D-Pad buttons on controller 2 to move Ultraman in any direction on the screen.

Universe Soldiers, The (GamTec)

(UNI) Extra lives:
At the game over screen, when the animation is stopped, hold Down, then untill the screen is fade out, every press of Select will increase the initial lives by 1, press as fast as you can to obtain up to 30 extra lives.

Untouchables, The

(UNI) Secret words:
Enter this word as a name in a hi-score table when asked to.
XVQ-Start a new game and at the stage number screen press Up + A + B. The game will return to the title screen, start a new game and you'll continue from the next level. Repeat this process up to the stage 7.

Utsurun Desu

(UNI) Debug mode:
After power the console up, press Start once to get to the second title screen, then press Down, Down, Down, Down, Down, Down, Down, Down, B, B, B, B, B, B, Left, Left, Left, Select, Select, Select, Select, Select, Select, Select, Select, Select, A. Nigori of the "で" kana symbol in the title will disappear, indicating the correct code entry. This enables the stage select mode by default, also you'll be invulnerable to the enemies attacks during the game (still able to loose your life on spikes, etc.), the amount of money from the start will be 256005000 yen. Also, in every shop or dialog room, the top-left corner of the HUD above the HP will be filled with a message "PROG.by.平山丈時", which stands for a programmer's name Hirayama Jouji. And finally, at the final boss, go to the right side of the screen and press Down to get a random item fall down from above, and you can use it as weapon.

(UNI) Different endings:
There are four different endings in this game. One is a good true ending and three are bad endings of some kind. The only thing is responsible for ending selection, is a number of money. Due to some weakness in its calculation logic, the result sometimes is quite random. The number of money is a 10-digits decimal number, so maximum amount of money you can earn is 9999999999 (10 billions). The least two digits aren't actually used in calculations during the game, any price in shops is divisible by 100, any rewards too. The only way to have a lower digits changed is to die and continue the game. Every time you die, the counter will be increased. So basicly, this is always the deaths counter, instead of actually a money counter (as a side note, the way it's calculated caused some side effect: if you die more than 99 times this will reset counter to 0 and add 100 actual money to the counter).
The ending number is calculated based on comparison money digits. Lets name those digits from left to right with a letters: ddccbbxxaa. So, a - means the deaths counter, x - is ignored, b - count of 10000, c - count of millions, and finally d - count of 100 millions. The table below shows the ending selection logic. If you note, the calculations meant to be just check if number of money high enough, or too small to good ending. But actually, you may have A LOT of money, but with some specific digits combinations, this may end with bad or the whorse ending anyway!
Ending 0, dancing on the south pole-(max(a,b) >= c) && (max(a,b) >= d)
Maximum of a and b greater or equal to c and d at the same time.
This will cause the bad ending either if you have c and d at zero, of just LOWER than a or b!
Ending 1, dancing on the grass-(max(a,b,c) < d) && (a >= 3)
Maximum of a, b and c less than d and number of deaths greather or equal to 3.
Ending 2, wandering throught the world-(max(a,b) < c) && (max(a,b,c) >= d)
Maximum of a and b less than c, but maximum of a, b and c greather or equal to d.
Ending 3, hawaii, the best ending-(max(a,b,c) < d) && (a < 3)
Maximum of a, b and c less than d and number of deaths less than 3.

Valkyrie no Bouken - Toki no Kagi Densetsu

(UNI) Suicide:
During the game, pause it, then press A + B on controller 2.

Vegas Connection - Casino Kara Ai wo Komete

(UNI) Sound test:
Hold A + B on controller 1, then press Reset.

(UNI) Message speed:
Hold Right on controller 1, then press Reset.

(UNI) Different slot graphics:
Start a "CASINO" game mode, select "SLOT MACHINE". While selecting a line number for the slot machine, hold one of the following combinations on controller 2 to change the slot graphics to corresponding tileset.
Right + A + B-Faces
Left + A + B-Dinosaurs
Down + A + B-Clothes
Up + A + B-Robots

Vegas Dream, Viva! Las Vegas

(UNI) Debug mode:
Start a new game, select the game type, enter a name or select available names, proceed to the game selection screen. Press Up, Down, Right, Left, Up, Down, Right, Left, A, B, A, B, B (for the US version) or B, A, A, B, A, A, B, A, A, A, B, A, B (for the Japanese version), a sound will confirm correct code entry. Hold A + B and press Start to enter the "MESSAGE TEST" mode. There are two options "ENGLISH" and "JAPANESE". In the Japanese version you can switch between them during the game by pressing Select instead of A at end of the dialog message. In the US version there is no japanese font, and you can't switch the language, althought the japanese messages library is present in the ROM. Additionally, set cursor to one of the games, hold A and press Start to enable corresponding debug mode from the table below.
"BLACK JACK"-Ending sequence.
"ROULETTE"-Game Over sequence (lucky slot).
"SLOT MACHINE"-Face test mode.
"KENO"-Sound test mode.

Venus Senki

(UNI) Secret passwords:
はるぼういち-Stage 1
はるぼうに-Stage 2
はるぼうさ-Stage 3
はるぼうし-Stage 4
はるぼうご-Stage 5
はるぼうろ-Stage 6
はるぼうなな-Stage 7
はるぼうはち-Stage 8
はるぼうく-Stage 9
はるぼういちまる-Stage 10
はるぼういちいち-Stage 11
はるぼういちに-Stage 12
はるぼういちさ-Stage 13
はるぼういちし-Stage 14
はるぼういちご-Stage 15

Volguard II

(UNI) Secret words:
At the title screen, set the level to "2", start a new game and beat the defaul score record. Enter following word as a player name to the hi-score record. Start a new game again, press Start to pause it, then press Up + Down + Left + Right + B + Select combining buttons from both controllers. For example, press Down + Right + B + Select on controller 1 and Up + Left on controller 2.
NUKENIN?-Invulnerability.

Wagyan Land

(UNI) Ending sequence:
At the title screen, press Up, Down, Right, Right, A, B, Left, Left, Down, Up, B, A.

Wagyan Land 3

(UNI) Debug leftover 1:
At the very end of the intro sequence of the beginning of the new game, there is a scene, when your character hop into UFO and fly away. If you hold any button on controller 2 before this scene appears, the UFO's border color will change according to combination of pressed buttons, the value read from controller 2 threated as a border color while displaying this scene. There is no other purposes for this, except developers had to choose the color while playing the actual game.

Wai Wai World

(UNI) Suicide:
During the game, hold Up + A + B then press Start to commit suicide.

Wall Street Kid

(UNI) Final password:
Complete the game, after the ending credits, while the "SOFEL" logo is displayed, press Left + A on controller 1. You'll get the final password to your ending.

Wang Zi Fu Chou Ji (Henggedianzi)

(UNI) Secret message:
During the game, while the dice rolls for any of players, press Up + Right + B + Select + Start on controller 1 to see a secret message.

(UNI) Unknown menu flag:
During the game, press Select to enter the main game menu. Press B + Select + Start to enable rise some cheat flag, which is checked, when you click on the window at the upper-right main menu item. Need to play more.

Wayne Gretzky Hockey

(UNI) Secret message:
At the copyrights screen, press on controller 1 or controller 2 Up + Left + A + B + Select once then Down + Right + A + B + Start once, a "WAYNE GRETZKY EXTRA SPECIAL" screen will appears. This extra copyright screen available in all Bethesda's games with the same code.

Wayne's World

(UNI) Stage Skip:
During the game, pause it then press A, B, A, Select, when unpaused, game will be waiting for extra input. Press B to skip current stage or press A to return back to normal game.

Where in Time is Carmen Sandiego

(UNI) Easter egg:
Enter to the hall and head to the basement on elevator. Select boiler's room "CREDITS" door, enter to view game credits and staff. Hold Right, then press A, A, A, B, A, Start, A, Select, A, Select, A, Start, A, B, A, A. A name "ERIK T. KISS" will flash about 2 seconds. Now head to personnel and start a new game. Instead of "San Francisco", a starting point of your travels will be "Vancouver". The developer of this game was "Distinctive Software Inc." originated from Canada, until 1991 DSI resided in Vancouver.

Where's Waldo

(UNI) Secret message:
At the copyrights screen, press on controller 1 or controller 2 Up + Left + A + B + Select once then Down + Right + A + B + Start once, A "WHERE'S WALDO EXTRA SPECIAL" screen will appears. This extra copyright screen available in all Bethesda's games with the same code.

Who Framed Roger Rabbit

(UNI) Secret passwords:
Enter this phrase as a password, before entering the last letter with A, hold Down + Select to complete the code.
ROGERTHE RABBIT ANDEDDIE-Extra 6 lives.

Willow

(UNI) Password generator:
rand0
rand1
rand2
Location (bit 1)
Location (bit 0)
unk0
Event: Fin Raziel Restored
Event: Wing Sword Powered
Event: Cave Repaired
Event: Witch's Shoes Available
Event: Madmartigan Talk
Event: Tir Asleen Open
Event: Brownie Rescue
Event: Eborsisk Defeated
Event: Kael Defeated
Event: Kael Talk
Location (bit 6)
Location (bit 5)
Location (bit 2)
unk1
unk2
Location (bit 4)
Location (bit 3)
Event: Skeleton Gone
Event: Nockmaar Guard Gone
Event: Nail Clan Available
Event: Sorsha Gone
Swords: Wonder
Swords: Kaiser
Swords: Devileye
Swords: Wing
Swords: Dragon
Swords: Flame
Swords: Battle
Swords: Long
Shields: Fury
Shields: Battle
Shields: Tail
Shields: Metal
Shields: Dragon
Shields: Gold
Shields: Small
Shields: Wood
Magic: Healmace (bad)
Magic: Terstorm
Magic: Cane
Magic: Fireflor
Magic: Thunder
Magic: Renew
Magic: Bombard
Magic: Acorn
Magic: no magic slot 3
Magic: no magic slot 2
Magic: no magic slot 1
Magic: Healball
Magic: Specter
Magic: Fleet
Magic: Ocarina
Magic: Healmace
Items: Red
Items: Flute
Items: Key
Items: Braclet
Items: Scale
Items: Herb
Items: Ring
Items: Statue
Items: no items select
Items: Shoes
Items: Powder
Items: Necklace
Items: Nockmaar Key
Items: Wakka
Items: Crest
Items: Blue
unk8
Debug teleport
unk9
unk10
unk11
unk12
unk13
unk14
zero0
zero1
zero2
zero3
Level (bit 3)
Level (bit 2)
Level (bit 1)
Level (bit 0)
rand3
rand4
rand5
rand6
rand7
Japan Password:
English Password:


World Boxing

(UNI) Debug mode:
Hold A + B on controller 1 and controller 2 at the same time, then press Reset. At the title screen, hold A + B on controller 1 and press Start.

World Hero, Chinese Hero

(UNI) Test Mode:
Hold B + Select + Start, then press Reset. After a while the self-test screen will appear. Continue holding the buttons to see this screen. It will shows the results of PRG/CHR CRC tests, mirroring modes test and IRQ test. When you release the buttons, the game will continue it's normal operation.

Wrecking Crew

(UNI) Full demo sequence:
The demonstration of the gameplay at phase 82 ends very quickly when mario run right into the enemies on the ladder. Actually, this is only first of the five parts of this demo. Every part ends with a dumb run to the wrong way and cause death. To make it to continue to the next part, before every dumb death in each of the demo parts, hold A + B on controller 1 and one of the corresponding D-Pad buttons on controller 2 at the same time. To continue to the second part, the D-Pad button on controller 2 is Up, for the third part the button is Down, and accordingly Left and Right for the fourth and fifth parts. If all buttons pressed right in time, Mario will avoid all dumb deaths during the demo sequence and finish this phase perfectly.

Wu Shi Hun, Samurai Spirits, Samurai Showdown III

(UNI) Fight as Amakusa:
Start a 2 player game, at the fighter selection screen, select any fighter then hold Left + B either as player 1 or 2 and wait until selection is applied. Instead of selected fighter, you'll control the last boss Amakusa.

Xevious

Japanese version:

(UNI) Debug mode:
At the title screen, on controller 2 hold A or B and press Right, Right, Right, Right, Right, Right, Right, Right, Right, Up, Up, Left, Left, Down, Down, Down, Down, Down, Down, Down, Down, Down. At right top screen corner appears numbers line. By pressing Left or Right on controller 2 you can select one of 8 digits, and by pressing A or B switch it to 0 or 1. Then press Reset to apply effects. The table above describe all these bits meaning. Bits are numerated from left to right, from 0 to 7. Note, the cheat sequence still present in all regional versions and can be entered, but the actual debug routine complete removed from all western versions, so it can't be used or re-enabled.
bit 0-Invincibility
"0" - off
"1" - on
bits 1-3-Extra lives score range
"000" - 20k first, 60k onward
"001" - 20k first, 50k onward
"010" - 20k first, 80k onward
"011" - 30k first, 80k onward
"100" - 30k first, 120k onward
"101" - 40k first, 80k onward
"110" - 40k first, 100k onward
"111" - 50k first, 150k onward
bits 4-5-Starting lives
"00" - 3 lives
"01" - 1 lives
"10" - 2 lives
"11" - 5 lives
bits 6-7-Difficult level
"00" - normal
"01" - easy
"10" - hard
"11" - very hard

Xi Tian Qu Jing II (Journey to the West II)(Waixing)

(UNI) Stage select:
At the title screen, select the number of players, press Start once, then enter Left, Up, Right, Down, B, B, B, B.

Xian Jian Qi Xia Zhuan (Nanjing)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Xiao Au Jiang Wu (Nanjing)

(UNI) Easter egg:
Start a new game. When the intro is over, stand on the stage, just above or to the left/right of the table, so when you move in any direction, you won't leave the stage area. Now, press Up, Up, Down, Down, Left, Left, Right, Right, A, push every button slowly, with pauses between them. This code, however, can be enterd the same way in any place of the town, just outside the starting room.

Xiao Ma Li, Bingo

(UNI) Extra 5000 credits:
Press Up once and Select once in any order then Start at the title screen.

(UNI) Ending sequence:
Press once each of the following buttons Up, A, B, Select in any order then Start at the title screen.

Youkai Douchuuki

(UNI) Test mode:
Hold Up + A + B on controller 2 and press Reset.

(UNI) Easter egg:
Hold Select on controller 1 and press Reset. The game title "妖怪道中記" ("Youkai Douchuuki" or "Demon Travel Journal") will be changed to "妖艶道中記" ("Youen Douchuuki" or "Erotic Travel Journal").

Youkai Club

(UNI) Debug leftovers:
Hold B on controller 2 during the game to aviod some of the collision tests, for example to walk through some wall corners or moving platforms. There are more debug routines left in the game code, but they cause the crash of the game at very beginning if re-enabled.

Yuefei (Mars, Union Bond G-006)

(UNI) Easer egg:
Start a new game, press Select to enter the main menu. Now press Left + Select + Start on controller 1. A small "MARS" logo will appear at the top-left corner of the screen.

Yu-Gi-Oh (Nanjing, NJ032)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Zanac

(UNI) Debug mode:
Press Reset 9 times, and at the title screen type "COMPILE" and press Enter on the family keyboard. A sound will confirm correct code entry. From now, you can use debug functions while game is paused. First of all, the different ship graphics will be enabled by default. Press Select on controller 1 for selecting a weapon. On the keyboard press Clr to get 255 lives, Ins to warp to next area or Del to warp to previous area.
Source: BMF54123

Zhen Ben Xi You Ji (Asder)

(UNI) Power throw shortcut:
At the "ASDER" logo screen, press Down + Left + A + B + Select. A sound wil confirm correct code entry. Now during the game you can perform a special attack (for the Monkey King this is Staff Throwing) just by press Select.

Zhen Shi Hun - Wu Shi Dao Lie Zhuan (Nanjing, NJ033)

(UNI) Secret message:
During the game, while in conversation mode, hold Up + Select + Start on controller 1 and skip with A to the end of the dialog. The copyrigh string will be displayed in the dialog box. This cheat can be found in a couple of Nanjing games on the same engine.

Zhong Guo Xiang Qi, Qi Wang - Chinese Chess

(UNI) Soft reset:
During the game hold Start, then press Select.

(UNI) Tileset switch:
During the game hold A and press Select to switch some tiles to different graphics. However, this only works in the "Qi Wang" version, since other version doesn't have the different tilesets in CHR ROM, but the code is present and working.

(UNI) Level and difficulty switch:
During the game point the cursor to the particular place of the game screen, then hold B + Select and press A to instantly change the corresponding value. You can change the current level and sublevel if click on the corresponding numbers at the top side of the screen, or change the current difficulty level by click on the rightmost kanji at the top side of the screen.

Zoids 2 - Zenebasu no Gyakushuu

(UNI) Secret words:
Enter one of the following words as a player name.
すこっと-Start with Level 8 and three additional machines, one of them is "Gojuras", which have Live/Offence/Defence at 2800/3500/2800. Maybe even more parameters are changed.

Zoids Mokushiroku

(UNI) Secret passwords:
Note: nigori or panigori symbols need to be entered separately from the kana symbols, like for ゴ you should enter コ and then ". So Each password contains 16 symbols in total.
キングゴジュラスカイタイナ-Secret map
パスワドニハギルベイダ-Secret map

Zombie Hunter

(UNI) Secret mini-games:
This game contains a couple of secret timer mini-games. You can challenge with other people for fastest reaction or pressing speed. Or just use this feature as a countdown timer or stopwatch. For enabling these features, power the console off, hold A + B + Start on controller 1 and one of the buttons described below, then power up the system again. You cannot exit this mini-games by pressing reset, you'll return to the selected mini-game instead.
Up-Counter
Down-Game Clock
Left-Stopwatch
Right-Timer

(UNI) Instant shop:
Usually, during the game you may find a shop if you jump out of the screen at the top. Obviously, you couldn't do that on some locations. But, there is an instant shop at the very first screen of the game. Just walk to the left to the leftmost three and press Up + B to enter it. If you play the "GAME B" mode, you must press Select a couple of times first before entering this cheat.

(UNI) Title easter eggs:
During the title screen and intro, shout to the microphone on the controller 2 and press B on controller 2 an the same time to change the title screen background color ouf ot the 8 colors in total. Also you can control the fire on the title name during the intro sequences. Shout to the microphone to weaken it.

Zunou Senkan Galg

(UNI) Invulnerability:
At the title screen, press A, A, Down, Left, Right, Right, Right, B, Up, Up, Up, Up, Start. A sound will confirm correct code entry.

 

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