Mostly Unpublished Cheats ;)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.

  150-in-1 [p1][!], 200-in-1 - Elfland (Unl)[U][!]
  100 Man $ Kid - Maboroshi no Teiou Hen, Casino Kid (U)
  16 Mahjong, Tai Wan Ma Que 16
  1943 - The Battle of Midway, 1943
  8 Eyes
  AV - Mahjongg
  AV Jiu Ji Ma Jiang 2
  AV Pretty Girl Fighting
  AV Soccer, Ultimate League Soccer
  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 (U)
  Addams Family, The - Pugsley's Scavenger Hunt
  Advanced Dungeons & Dragons - Dragon Strike
  Adventures of Lolo (J), Adventures of Lolo 2 (U)
  Adventures of Lolo (U)
  After Burner, After Burner II
  Alpha Mission, ASO - Armored Scrum Object
  Argus
  Arkanoid 2
  Asterix
  Atlantis no Nazo
  Attack of the Killer Tomatoes
  B-Wings
  Bad Dudes (U), Bad Dudes vs Dragon Ninja, Dragon Ninja
  Bakushou! Star Monomane Shitennou
  Banana Prince, Bananan Ouji no Daibouken
  Barbie
  Batman Returns, Batman 3
  Batsu & Terii
  Battle Baseball
  Battle City, Tank 1990
  Battle Stadium - Senbatsu Pro Yakyuu
  Battle Storm
  Battleship
  Battletoads & Double Dragon - The Ultimate Team
  Best Play Pro Yakyuu '90
  Best Play Pro Yakyuu (J)
  Best Play Pro Yakyuu II
  Best Play Pro Yakyuu Special
  Best of the Best - Championship Karate
  Blues Brothers, The
  Bomberman II, Dynablaster
  Boogerman
  Bubble Bath Babes, Soap Panic
  Bucky O'Hare
  Bugs Bunny Crazy Castle, The, Bugs Bunny Fun House
  Captain Ed
  Captain Saver, Power Blade 2
  Captain Tsubasa (J), Tecmo Cup - Soccer Game
  Captain Tsubasa Vol. II - Super Striker
  Castle of Dragon, Dragon Unit
  Castlevania II - Simon's Quest
  Cat Ninden Teyandee
  Joe & Mac - Caveman Ninja
  Chess Academys
  Chiki Chiki Machine Mou Race, Wacky Races
  Chiller
  Chitei Senkuu Vazorudaa, Wurm
  Chou Hen, Galactic Crusader, Papillion
  Chu Da D
  Chuugoku Senseijutsu
  City Adventure Touch - Mystery of Triangle
  Clash at Demonhead, Dengeki - Big Bang!
  Commando, Senjou no Ookami
  Contra (U), Gryzor, Probotector (E)
  Cool World
  Cosmic Epsilon
  Cross Fire
  Crystalis, God Slayer - Haruka Tenkuu no Sonata
  Dai Meiro - Meikyuu no Tatsujin
  Daikaijuu Deburas
  Daiku no Gen San 2 - Akage no Dan no Gyakushuu
  Dancing Blocks
  Darkman
  Dash Galaxy in the Alien Asylum
  Datsugoku, POW - Prisoners of War
  Doki! Doki! Yuuenchi, Trolls in Crazyland, The
  Don Doko Don (J)
  Donald Land
  Dong Dong Nao II - Guo Zhong Ying Wen
  Donkey Kong Country 4
  Double Dragon II - The Revenge
  Downtown - Nekketsu Monogatari, River City Ransom, Street Gangs
  Dragon Fighter
  Dragon, The
  Drop Zone
  Dungeon & Magic - Swords of Element
  Earth Worm Jim 2 (Shin-Shin)
  Earth Worm Jim 2 (Super Game)
  Earth Worm Jim 3
  Egypt
  Esper Dream 2 - Aratanaru Tatakai
  F-1 Sensation, Formula 1 Sensation
  F1 Circus
  Famicom Disk System BIOS
  Family Boxing, Ring King
  Family Computer - Othello, Othello (U)
  Famista '89 - Kaimaku Han!!
  Famista '92
  Famista '93
  Famista '94
  Fantasy Zone (J)
  Fantasy Zone (Tengen)
  Faria - A World of Mystery and Danger!, Faria (J)
  Fighting Road
  Final Combat
  Final Fight 3
  Fire 'n Ice, Solomon no Kagi 2 - Coolmin Tou Kyuushutsu Sakusen, Solomon's Key 2
  Fire Emblem (J)
  Fire Emblem Gaiden
  Fire Hawk
  Flintstones, The - The Rescue of Dino & Hoppy
  Flipull - An Exciting Cube Game
  Flying Warriors, Hiryuu no Ken III - 5 Nin no Ryuu Senshi
  Freedom Force
  Fuzzical Fighter
  G.I. Joe (U)
  Galaxian
  Ganbare Goemon! - Karakuri Douchuu
  Ganbare Pennant Race!
  Ganso Saiyuuki - Super Monkey Daibouken
  Ghoul School
  Goal! 2, Goal! Two, Goal!!
  Golgo 13 - The Riddle of Icarus, Mafat Conspiracy - Golgo 13
  Goonies II, The - Fratelli Saigo no Chousen, Goonies II, The (U)
  Great Battle Cyber
  Great Tank, Iron Tank
  Great Wall, The
  Gun Nac
  Gun Sight, Laser Invasion
  Gun.Smoke
  Hatris
  Heisei Tensai Bakabon
  Hi no Tori - Houou Hen - Gaou no Bouken
  Hit the Ice
  Hokuto no Ken (J)
  Hokuto no Ken 2 - Seikimatsu Kyuuseishu Densetsu, Fist of the North Star
  Home Alone (U)
  Home Run Nighter '90 - The Pennant League
  Honoo no Doukyuuji - Dodge Danpei (J)
  Hook
  Hototogisu
  Huang Di
  Hudson Hawk
  Huge Insect
  Hunt for Red October, The
  Hydlide 3 - Yami Kara no Houmonsha
  Immortal, The
  Incredible Crash Dummies, The
  Indiana Jones and the Last Crusade (E), Indiana Jones and the Last Crusade (U) (UBI Soft)
  Insector X
  International Cricket
  Ironsword - Wizards & Warriors II
  Isolated Warrior, Max Warrior - Wakusei Kaigenrei
  Itadaki Street - Watashi no Mise ni Yottette
  Jarinko Chie - Bakudan Musume no Shiawase Sagashi
  Jaws
  Jesus - Kyoufu no Bio Monster
  Jovial Race
  Kaiketsu Yanchamaru 2 - Karakuri Land
  Kick Master
  King Kong 2 - Ikari no Megaton Punch
  King of Fighters 96
  King of Kings (J)
  Kinnikuman - Muscle Tag Match, M.U.S.C.L.E.
  Klash Ball
  Koushien
  Krion Conquest, The, Magical Doropie
  Kujaku Ou 2
  Kyonshiizu 2
  Kyuukyoku Harikiri Koushien
  Kyuukyoku Harikiri Stadium 3
  Kyuukyoku Tiger, Twin Cobra
  Last Ninja, The
  Legend of Prince Valiant, The
  Lethal Weapon (Tw)
  Linus Spacehead's Cosmic Crusade
  Little Mermaid - Ningyo Hime, Little Mermaid, The
  Little Ninja Brothers, Super Chinese 2 - Dragon Kid
  Little Samson, Seirei Densetsu Lickle
  Locksmith
  Lost Word of Jenny
  Lupin Sansei - Pandora no Isan
  Magic Bubble, Mermaids of Atlantis
  Magic Candle, The
  Magic Darts
  Magic Mathematics
  Mahjan Samit Kabukicho Hen, Mahjong World
  Mahjang Companion, Mahjong Academy
  Majaventure - Mahjong Senki
  Majou Densetsu 2 - Daimashikyou Galious
  Maniac Mansion (J)
  Mappy Kids
  Mappy-Land
  Master Fighter 2, Street Fighter II (YOKO)
  Mechanized Attack
  Meiji Ishin
  Meimon! Takonishi Ouendan - Kouha 6 Nin Shuu
  Meitantei Holmes - Kiri no London Satsujin Jiken
  Menace Beach
  Metal Fighter
  Mickey Mania, China Rabbit Baby
  Millionaire
  Minelvaton Saga
  Mirai Shinwa Jarvas
  Mission Impossible
  Mitsume ga Tooru
  Mobile Suit Z Gundam - Hot Scramble
  Momotarou Dentetsu
  Monster In My Pocket
  Moon Crystal
  Mortal Kombat 3 - Special 56 Peoples
  Mouryou Senki Madara
  Ms. Pac-Man (U) (Tengen)
  Musashi no Bouken
  Musashi no Ken - Tadaima Shugyou Chuu
  Mutant Virus, The
  Nangoku Shirei!! - Spy Vs Spy
  Nantettatte!! Baseball
  Napoleon Senki
  Navy Blue
  Nekketsu Kakutou Densetsu
  New York Nyankies, Rockin' Kats
  Ninja Cop Saizou, Wrath of the Black Manta
  Ninja Gaiden 3 - The Ancient Ship of Doom, Ninja Ryukenden III - Yomi no Hakobune
  Ninja Kun - Ashura no Shou
  Nuts & Milk
  Operation Wolf
  Over Horizon
  P'radikus Conflict, The
  Palamedes 2 - Star Twinkles
  Panda Prince
  Panda World
  Panic Restaurant, Wanpaku Kokkun no Gourmet World
  Parallel World
  Parasol Stars - The Story of Bubble Bobble 3
  Paris-Dakar Rally Special
  Pipe Dream
  Platoon
  Pocahontas (As)
  Pocahontas 2
  Poker Mahjong
  Power Blade (U), Power Blazer
  Power Rangers 3
  Power Rangers 4
  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 (J)
  Punisher, The
  Pyramid
  Pyramid II
  Quarter Back Scramble
  Quattro Arcade
  Racer Mini Yonku - Japan Cup
  Rainbow Islands - The Story of Bubble Bobble 2
  Rampage
  Ren & Stimpy Show, The
  Robin Hood - Prince of Thieves
  Rod Land
  Roger Clemens MVP Baseball
  Rolling Thunder
  Route-16 Turbo
  SD Battle Oozumou - Heisei Hero Basho
  SD Hero Soukessen - Taose! Aku no Gundan
  SD Keiji - Blader
  Saiyuuki World (J)
  Saiyuuki World 2 - Tenjoukai no Majin, Whomp'Em
  Seikima II - Akuma no Gyakushuu
  Shin Samurai Spirits 2 - Haoumaru Jigoku Hen
  Side Pocket
  Silver Eagle (Sachen)
  Simpsons, The - Bartman Meets Radioactive Man
  Sky Destroyer
  Somari, Sonic 3D Blast 5, Sonic 3D Blast 6
  Space Hunter
  Splatter House - Wanpaku Graffiti
  Square no Tom Sawyer
  Star Force
  Star Luster
  Star Soldier
  Star Wars - The Empire Strikes Back
  Strider
  Stunt Kids
  Summer Carnival '92 - Recca
  Super Chinese 3
  Super Contra 3
  Super Donkey Kong 2
  Super Donkey Kong [p1]
  Super Mario World
  Super Pang
  Super Pang 2
  Super Robin Hood
  Super Shinobi
  Super Turrican
  Super Xevious - Gump no Nazo
  T& C 2 - Thrilla's Surfari
  Tag Team Pro-Wrestling, Tag Team Wrestling, Special Tag Team Pro-Wrestling
  Taiyou no Shinden - Asteka 2, Tombs and Treasure
  Taiwan Mahjoing II
  Tasac
  Tecmo Bowl
  Tecmo World Cup Soccer
  Teenage Mutant Hero Turtles II - The Arcade Game (E), Teenage Mutant Ninja Turtles (J), Teenage Mutant Ninja Turtles II - The Arcade Game (U)
  Teenage Mutant Ninja Turtles - Tournament Fighters
  Tekken 2
  Tetrastar - The Fighter
  Thexder
  Tiny Toon Adventures (U)
  Tiny Toon Adventures 6
  Titan
  Tokoro San no Mamoru mo Semeru mo
  Top Rider
  Toy Story
  Tower of Druaga, The
  Tsuri Kichi Sanpei - Blue Marlin Hen
  TwinBee 3 - Poko Poko Dai Maou
  Uchuu Keibitai SDF
  Ultimate Mortal Kombat 3
  Ultimate Mortal Kombat 4
  Untouchables, The
  Vegas Connection - Casino Kara Ai wo Komete
  Vegas Dream, Viva! Las Vegas
  Volguard II
  Wagyan Land (J)
  Wayne Gretzky Hockey
  Wayne's World
  Where in Time is Carmen Sandiego
  Where's Waldo
  Who Framed Roger Rabbit
  Willow
  World Boxing
  Xevious
  Xiao Au Jiang Wu
  Xiao Ma Li
  Youkai Douchuuki
  Youkai Kurabu
  Zoids Mokushiroku
  Zombie Hunter
  Zunou Senkan Galg

Summary:
unique cheats-476
totally games-346

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

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

100 Man $ Kid - Maboroshi no Teiou Hen, Casino Kid (U)

US version:

(UNI) Secret passwords:
Instead "_" symbol you should use "FORWARD" option at 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 button before pressing A button 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.
i_wanna_go_bankrupt-Takes you to "game over" screen (strange cheat).
debug_monitor_switch_on-Debugging functions.
In addition to A + Start on first controller hold Left + A on second controller before skipping splash screen.
To switch to in game debugging monitor hold Left + A on second controller then press Start on first controller,
"MONITOR VERSION 1.00 PRESENT BY HIRO" screen appears. You will be able to view game events, play music and sounds.

Japan version:

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

16 Mahjong, Tai Wan Ma Que 16

(UNI) Secret message:
There is one more copyright message secretly encoded inside ROM. To view it press at the title screen Up, A, Left, B, Down, B, Right, A, B, B, A. Message:
         COPYRIGHT 1988
THIN CHEN ENTERPRIZE CORPORATION
    BY: LI-CHEANG TCHACVOSKY
    
appears. It seems that message was some kind of copyright protection. Encoded message is invisible in ROM and cannot be modified by pirates.

1943 - The Battle of Midway, 1943

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

8 Eyes

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:

Japan 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:

AV - Mahjongg

(UNI) Replay mode:
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 Jiu Ji Ma Jiang 2

(UNI) Replay mode:
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 Pretty Girl Fighting

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

AV Soccer, Ultimate League Soccer

(UNI) Ending sequence:
Press Select, B, Up, A, Down, B, Left, A, Right at the title screen, after pressing start, before team setup appears.

Aa Yakyuu Jinsei Icchokusen

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

Abadox

(UNI) Super weapon:
Press Up, Down, Right, Right, Up, Left, Right, Down, Left, Up, Start after the "PRESS START" message appears. During game play, press Start, Start to get a super weapon.

Abarenbou Tengu, Zombie Nation

(UNI) CRC test:
Hold Up + Left + A + B on second controller 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.

(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

Japan version:

(UNI) Level select and more:
At the title screen hold A + B on second controller and then press on first controller:
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 second controller and then press Start on first controller.

European version:

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

Addams Family, The (U)

(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 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

US version:

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

(UNI) Japan 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 (J), Adventures of Lolo 2 (U)

English versions:

(UNI) Password generator:
Level:
Password:

Adventures of Lolo (U)

(UNI) Password generator:
Level:
Password:

After Burner, After Burner II

US version:

(UNI) Empty cheat:
Press Left, Left, Left, B, B, B, A, A, A, A, A, A, A, B, Up, Up, Down, Down, Down, Down, Down at the title screen. You'll hear a sound. Nothing more won't happen.

Japan version:

(UNI) Sound test:
At the title screen hold A then start the game.

(UNI) Reverse mode:
Hold A + B on second controller and start the game.

(UNI) Continue:
When your game is over and you're at the blue After Burner screen, press A, A, A, A, B, Up, Up, Down, Down, Down, Down, Down, Down. You will continue on the level you just got a game over on.

(UNI) Empty cheat:
At the title screen press B, B, B, B, B, B, B, A, A, A, A, A, A, A, Up, Up, Up, Up, Up, Up, Up. You'll hear the sound. Nothing more won't happen.

Alpha Mission, ASO - Armored Scrum Object

All versions:

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

Argus

Japan version:

(UNI) Invulnerability:
At the title screen hold Select on second controller then press Start on first controller.

Arkanoid 2

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

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

Asterix

(UNI) Cheat menu:
Start the game and 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 title screen with extra "cheat" menu item.

(UNI) Invulnerability:
Do the same operations as for cheat menu enabling, but before pressing Start to return to main menu, hold Up + Right + A + B buttons. Start new game with any cheats as you wish and press Start to pause game again. Then enter the same code as for enabling cheat menu. A sound will confirm correct code entry. Press Start to unpause the game. From this point you will be fully invulnerable.

Atlantis no Nazo

(UNI) Debug codes:
All codes should be entered at the title screen.
There is three internal counters for three buttons: Select and A buttons on second controller, and B' on first controller. Each time you press one of these buttons, one of internal counters is increasing, regardless which button is pressed first or second. When group of counters reaches desired amount, the final test performs on combined value of pressed buttons from 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 Joe for corrections.
Skip current zone-Counters condition: the Select button on second controller - 33 times, the A on second controller - 22 times. Final combination: A + B.
Infinite lives-Counter condition: the A button on second controller - 11 times, the B' button on first controller - 22 times. Final combination: not needed.
Invincibility-Counter condition: the B button on first controller - 33 times. Final combination: Up + Down + A + B + Select.
Then press Start on first controller to start new game.

Attack of the Killer Tomatoes

(UNI) Frame advance:
Press Start to pause game, then by pressing Select you can advance 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 cheats you should enable cheat mode. On first controller hold Up then press A, then release Up. Repeat this for Right, Down, Left buttons accordingly, each time holding it, pressing A, then releasing. After this, hold one of 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 anyweapon.
Left-Enable stage select and weapon select at the same time.

Bad Dudes (U), Bad Dudes vs Dragon Ninja, Dragon Ninja

(UNI) Patriotic cheat:
After beating game, when last credit's message "data east usa corp." rolls out, American flag at the White House stops flutter. Then press Right, Left, Down, Up, A, A, B on second controller to make it flatter again. Press any button to stop it for the last time and A or Start to return to main menu.

Bakushou! Star Monomane Shitennou

(UNI) Unknown:
Any time in game press Up + Left + A + B on first controller. Seems this cause permanent luck for any player.

Banana Prince, Bananan Ouji no Daibouken

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

(UNI) Password generator:
Level:
Unknown:
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 first controller to return all normal copyrights back.

Batman Returns, Batman 3

US version:

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

Batsu & Terii

(UNI) Level select:
At the title screen press Up, Down, Left, Right, Up, Down, Left, Right on second controller then select desired level (only worlds 1, 2, 5, 6 are available) by pressing B button on the second controller 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 second controller 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 second controller 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 second controller 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 second controller 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 second controller then start the game.

Battle Baseball

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

Battle City, Tank 1990

Console version:

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

Arcade version:

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

Battle Stadium - Senbatsu Pro Yakyuu

(UNI) Debug mode:
Press Up, Up, Down, Down, Right, Left, Right, Left, A, B, Start on "oyasumi" page.

Battle Storm

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

Battleship

(UNI) Secret passwords:
0914-Unlimited weapons
0528-Shows enemy grid by pressing Select

Battletoads & Double Dragon - The Ultimate Team

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

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 button 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 (J)

(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 to 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.

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 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 button 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 of the Best - Championship Karate

(UNI) Secret words:
Enter one of wollowing 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".

Blues Brothers, The

Prototype version:

(UNI) Level skip:
Any time in the game press on the second controller Down + Right + A + B + Select + Start and the same time press Up + Right + A + B + Select + Start on the first controller. 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. Message "Not bad but. You aint't seen nothin' yet!"

Bomberman II, Dynablaster

All versions:

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

Boogerman

Japan version:

(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.
Info from Яковлев Виктор

Bubble Bath Babes, Soap Panic

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

Bucky O'Hare

(UNI) Password generator:
Power:
Blue planet:
Red planet:
Green planet, Base HI:
Yellow planet, Base LO:
Password:

Bugs Bunny Crazy Castle, The, Bugs Bunny Fun House

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

Captain Ed

European version:

(UNI) Invulnerability:
On boss sequence in no-flight game mode pause the game then press at on first controller Up + A + B + Select. After game is unpaused you will invulnerable.

(UNI) Secret passwords:
こひあ-Play with infinite energy.

(UNI) Secret words:
Enter as player name:
きんた-Warp to BOSS stage.

Captain Saver, Power Blade 2

(UNI) Sound mode:
At the title screen hold Left + A + B on second controller then press Start button on first controller.

Captain Tsubasa (J), Tecmo Cup - Soccer Game

(UNI) Password generator:
Bits:










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

Captain Tsubasa Vol. II - Super Striker

(UNI) Password generator:
Bits:









Random:
Password:

Castle of Dragon, Dragon Unit

(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 game in test mode but cannot complete any level, but you can select "EXIT" option and continue normal game.

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):

Cat Ninden Teyandee

(UNI) Sound test:
On title screen hold A + B + Select then press Start.

Joe & Mac - Caveman Ninja

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 first controller.
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.

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.

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 button. Messages "NTSC PAL VERSION 21 SEPT 1990, NTSC MODE, PRG CHECKSUM 1681, MODS BY SCOTT SCHRYVER" will appear. Note: 3.14 goodnes seems have naming mistake for thgese ROMs, since for HES version title screen says "BY AGCI" but for AGCI version "BY SHAREDATA".

Chitei Senkuu Vazorudaa, Wurm

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

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

Chou Hen, Galactic Crusader, Papillion

All versions:

(UNI) Level and weapon select:
Press Down, B, Left, A, Up, A, B, Right at the title screen then press following button:
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) Ending sequence:
Press Down, B, Left, A, Up, A, B, Right, Select, A, B at the title screen.

Chu Da D

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

Chuugoku Senseijutsu

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

City Adventure Touch - Mystery of Triangle

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

Clash at Demonhead, Dengeki - Big Bang!

Japan version:

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

US version:

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

Commando, Senjou no Ookami

All versions:

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

Japan version:

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

Contra (U), Gryzor, Probotector (E)

Japan version:

(UNI) Stage select:
Press Start button at the title screen to begin the game, after that press and hold Up + Left + A + Select buttons before title desappear.

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.

Cosmic Epsilon

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

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

Cross Fire

(UNI) Level select:
At the title screen press Select, Select, A, B, B, Select, B, Select, A then press Start.
Info from Яковлев Виктор

(UNI) Invulnerability:
At the title screen press B, B, B, A, B, Select, Select, B, A, A, Select then press Start.
Info from Яковлев Виктор

(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.
Info from Яковлев Виктор

Crystalis, God Slayer - Haruka Tenkuu no Sonata

(UNI) Pause game:
For pause game press B on second controller.

Dai Meiro - Meikyuu no Tatsujin

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

(UNI) Secret passwords:
OWARIDAI-Ending sequence

Daikaijuu Deburas

(UNI) Map select:
If you complete the game and your last save was in levels 15 or 16, you will be able to use cheat codes when starting new game. After game ending you shouldn't clear SRAM data or save any other games to be able to use this cheat any time you want. Just start new game by pressing Start at the title screen, while starting cutscene 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 1 player game.

(UNI) VS Map select:
If you complete the game and your last save was in levels 15 or 16, you will be able to use cheat codes when starting new game. After game ending you shouldn't clear SRAM data or save any other games to be able to use this cheat any time you want. Just start new game by pressing Start at the title screen, while starting cutscene 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 players versus game.

(UNI) Sound select:
If you complete the game and your last save was in levels 15 or 16, you will be able to use cheat codes when starting new game. After game ending you shouldn't clear SRAM data or save any other games to be able to use this cheat any time you want. Just start new game by pressing Start at the title screen, while starting cutscene is running press Up, Up, Down, Down, Up, Up, Down, Down then press Start to select game music and sounds.

Daiku no Gen San 2 - Akage no Dan no Gyakushuu

(UNI) Level select:
Press Up, Right, Down, Left, Up, Right, Down, Left when "Irem" logo appears, then start the game.

(UNI) SE test:
Hold A button on second controller before title screen appears, then press Start on first controller to skip intro.

(UNI) BGM test:
Hold B button on second controller before title screen appears, then press Start on first controller to skip intro.

Dancing Blocks

(UNI) Easter egg:
After "Sachen" logo disappear from screen, press and hold A + Select then press Start. Continue holding Select release the rest of buttons then press B, Start, A, B, Start, Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start one by one, always continue holding Select. If all done correct, three huge white kanji "陳關和" will appear on screen and game will reset.

Darkman

(UNI) Level select:
At the title menu select "HI SCORE" option, hold Right on first controller 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 acces it. Enter "DERMA" as password. Now you can select any game sublevel and boss shooting including ending message.

Dash Galaxy in the Alien Asylum

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

Datsugoku, POW - Prisoners of War

(UNI) GameGenie:
IPKGAKIY+XTNKGTAV-The GameGenie code enables in-game level select cheat routine. To use it on second controller 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.

Doki! Doki! Yuuenchi, Trolls in Crazyland, The

Japan version:

(UNI) Secret passwords:
"DB !"-First ending sequence
"DW *"-Second ending sequence
"!MGB"-Sound Test
"Z!N*"-Secret message (Extra 99 Lives for EU version)

Don Doko Don (J)

Japan Version:

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

Donald Land

(UNI) Level select:
Press A, B, Right, Left at the title screen, then press one of the following combinations to enter another level.
Up + A-(1) Home Town World
Up + B-(2) Lake Side World
Up + A + B-(3) Forest World
Up + Select-(4) Sky World
Up + A + Select-(5) Oasis World
Up + B + Select-(6) Cave World
Up + A + B + Select-(7) Pond World
Up + Right-(8) Harbor World
Up + Right + A-(9) Ocean World
Up + Right + B-(10) Ghost Town World
Up + Right + A + B-(11) Dark Forest World
Up + Right + Select-(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 hidden "Pyramid" game instead of lerning english.

Donkey Kong Country 4

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

Double Dragon II - The Revenge

US version:

(UNI) Continue:
Japanese version of this game have "Continue" after "Game over" by default. 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 "Continue" mode and start again from the last level.
on first controller Up, Right, Down, Left, A, B-For Levels 1-3
on first controller Up, Down, Left, Right, B, A, A-For Levels 4-7
on second controller A, A, B, B, Down, Up, Right, Left-For Levels 8~

Downtown - Nekketsu Monogatari, River City Ransom, Street Gangs

Japan version:

(UNI) Easter Egg:
Start a new game. Go to game menu, then select and enter "STATUS" screen. Press Down + Left on second controller and Right + Select on first controller at the same time. A screen with Riki and Kunio pictures will appear.
Info from tcrf

Dragon Fighter

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

(UNI) Level select:
Hold A + B button on first controller and press Reset, continue holding A + B after 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 second controller to select desired level and then press Start on first controller.
Right-2 level
Down-3 level
Up-4 level
B-5 level
A-6 level

(UNI) Restore energy:
Any time in game you can restore your energy. Each level have it's own cheat sequence for that. Pause the game then enter one of the following codes according to the current game level to restore the energy.
A, A, A, A, B, B, B, B-1 level
A, B, A, A, B, A, B, B-2 level
A, B, Up, Up, A, B, Down, Down-3 level
Up, Down, Left, Right, A, B, A, B-4 level
A, Up, B, Down, A, Left, B, Right-5 level
Up, Down, Up, Up, Up, Up, Down, Up-6 level
Info from Яковлев Виктор

Dragon, The

Japan ane European versions:

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

Drop Zone

(UNI) Secret words:
To enter any player names for the hi-score table you must get at least 10000 pts. After entering any name wait for the hi-score table appears and press Up, Right, Down, Left on first controller. Small green enemy will appear left to hi-score table as animated cursor. You can switch with Up or Down buttons cursor position and select one of secret names entered before to select corresponding game effect, one effect at once. To play with this effects, press Select. Pressing Start will reset current cheat state.
ZOQ-Does nothing
NOJ-Does nothing
RRP-Doubles cloak time
CZN-Start from WAVE 5
FHO-Start from WAVE 10
INR-Prevent explosion when volcano particles or NMEYE enemy interfere with player
KEN-Faster moving acceleration
LOB-Slower moving acceleration
BAZ-Higher gravity
WOW-Start from WAVE 75
MPS-Glamour game mode
HDB-Cancel cheat mode, set all names as "JNR" and all scores to 100

Dungeon & Magic - Swords of Element

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

(UNI) Hidden level map:
At thrid scene of opening sequence (eye) before text starts displaying press A, A, A on second controller. Then press Start on first controller and begin new game. Throught the game now you can press Up on the second controller to view current level map.

Earth Worm Jim 2 (Shin-Shin)

(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.
Info from Яковлев Виктор

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.
Info from Яковлев Виктор

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 area right above edit menu frame window, 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) Sound and CHR test:
Hold Right + B then press Reset.

Esper Dream 2 - Aratanaru Tatakai

(UNI) Secret words:
Enter one of following words as player name, both codes does the same.
"こや 2"-Extra 255 gold
Hold Up + Left on the second controller before Start and hold until next screen appears.
"あ0き "-Extra 255 gold
Hold Up + Left on the second controller before Start and hold until next screen appears.

F-1 Sensation, Formula 1 Sensation

(UNI) Empty cheat 1:
Press Up, Up, Down, Down, Left, Right, Left, Right, B, A at the title screen, a sound will confirm correct code entry. Cheat does nothing. Probably there was some other cheat at the development stage.

(UNI) Empty cheat 2:
Press B, A, B, A at the title screen, 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, a sound will confirm correct code entry. Effect identical to "ED.ED" secret word effect except it can be used in "FREE MODE".

(UNI) Secret words:
Enter one of wollowing words as player name in "GRAN PRIX" mode. When name 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.

F1 Circus

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

(UNI) Reset Battery RAM:
Hold A + B on second controller and press Reset.

Famicom Disk System BIOS

(UNI) Internal 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.

Family Boxing, Ring King

REV0 version:

(UNI) Super power:
At power points arrangement screen when you can set up your player powers and see enemy powers, enter following buttons sequence: A on second controller, A, Select, A on first controller, B on second controller, Select on first controller, A, B on second controller, B, B on first controller. From now, your punch power will be maximum and enemy's punches won't damage you. But you couldn't save your progress with passwords, password string will be always "ANTAWOTUYOI" which means "YOU ARE STRONG".

Family Computer - Othello, Othello (U)

US version:

(UNI) Edit mode:
At level select menu before entering name hold on second controller Right + A and on first controller B + Select then press A and hold it until name input mode appears. When entering the game you will be able to put black or white tokens by pressing A or B buttons, then press Select to accept. Note: if you want to use edit mode with "Slot" cheat, you should press the same buttons at mode selection screen.

Famista '89 - Kaimaku Han!!

Japan version:

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

Famista '92

(UNI) In-game reset:
Press Start button then immediately press Select.

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

Famista '93

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

Famista '94

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

Fantasy Zone (J)

(UNI) Sound test:
After beating that damn hard game, when "staff" rolls over press on second controller Left button 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. A sound will confirm correct code entry.

Faria - A World of Mystery and Danger!, Faria (J)

Japan 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 Road

(UNI) Test mode:
Hold A + B on first controller 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 "START" option and press Start then while sound is playing quickly press and hold Up + Left + A + B.

Final Fight 3

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

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 (J)

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

Fire Emblem Gaiden

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

Fire Hawk

(UNI) Secret words:
Enter one of following words as player name for the hi-score table and you'll see some programmers messages:
"DIZZY......"=>"BUY IT NOW!" (Dizzy demo)
"CREDITS...."=>"FAMOUS NOW " (Credits screen)
"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 "

Flintstones, The - The Rescue of Dino & Hoppy

Japan version:

(UNI) Debug mode:
After "PUSH START BUTTON" message starts flashes, press A, A, B, B, Right, Down, Down, Down, Down, Down, Down, Down, Left, Start to enter to debug mode. Now you can choose one of two game modes "NORMAL" and "NOHIT", the last one gives you invulnerability and all extra abilities. After mode selecting, number will appears. Switch numbers by pressing Up or Down if you press A button, you will here sound or music according to number, if you press Start then you will be moved to level with this number.

(UNI) Test mode:
After "PUSH START BUTTON" message starts flashes, press A, B, A, B, Up, Right, Right, Right, Down, Down, Down, Down, Left, Left, Start to enter to test mode. This mode is simple version of "Debug mode", just allow you to select and hear sound and mucis and set up desired level same time. No "NOHIT" mode and no extra abilities are available.

Flipull - An Exciting Cube Game

US version:

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

Flying Warriors, Hiryuu no Ken III - 5 Nin no Ryuu Senshi

(UNI) Secret passwords:
MUSIC-Sound test
END-Ending sequence
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" mean latest stage.
Info from Яковлев Виктор

Freedom Force

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

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

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

Fuzzical Fighter

(UNI) Hyper debugger mode:
At the title screen hold A + B on second controller then press A + Select or B + Select on first controller.

G.I. Joe (U)

(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

Galaxian

(UNI) Music player:
Power console then press Reset 44 times, then press and hold A + B on second controller then press Reset one more time. Screen will changes, at left side of screen will fall flashing in music rhytm 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 on in another way. Reset system only 10 times after power on, then shout in microphone on second controller of Famicom console 4 times. This need additional 34 resetting before reaching second melody.

Ganbare Goemon! - Karakuri Douchuu

(UNI) CRC test:
Hold A + B buttons 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

Ganso Saiyuuki - Super Monkey Daibouken

(UNI) Area selection:
At the title screen by pressing combinations of A or A + B you may select game area then press Start to enter it.
A + B-Area 1
A + B, A-Area 2
A + B, A + B-Area 3
A + B, A, A-Area 4
A + B, A, A + B-Area 5
A + B, A + B, A-Area 6
A + B, A + B, A + B-Area 7
A + B, A, A, A-Area 8
A + B, A, A, A + B-Area 9
A + B, A, A + B, A-Area 10
A + B, A, A + B, A + B-Area 11
A + B, A + B, A, A-Area 12
A + B, A + B, A, A + B-Area 13
A + B, A + B, A + B, A-Area 14
A + B, A + B, A + B, A + B-Area 15

Ghoul School

(UNI) Debug mode:
At "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.

Goal! 2, Goal! Two, Goal!!

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

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

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

Japan version:

(UNI) Debug menu:
At "Act number" screen, before animation stops hold Select button on first controller, then quickly press A, B, A, B, A, B, A, B, A, B, A, B, A, B, A, B. You will be able to select any plot animation or level.

Goonies II, The - Fratelli Saigo no Chousen, Goonies II, The (U)

US version:

(UNI) CRC test:
Hold A + B buttons then press Reset. After some time message "GOONIES2 ONE" appears if PRG CRC test is OK and "GOONIES2 TEN" if CRC test fails. European version of ROM from GoodNES 3.10 has "TEN" message.

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 %BLLUDARU% at the title screen, then select player and start the game.

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 Wall, The

(UNI) Extra pts.:
While in-game press A + B + Select to add 500 pts to score.

(UNI) Easter egg:
Before title screen appears, press and hold A + B + Select. When screen turns black, release button and enter code sequence A + Select, B + Select, Select + Start, A + Select, B + Select, Select + Start. Message "SACHEN" appears on screen.

Gun Nac

All versions:

(UNI) Invulnerability:
Wait until starting cutscene sequence about to end and hold A + B at first controller. Demo sequence will continue with additional graphics and message "DEATH & NON-DEATH FREE SELECT MODE OK!" will appears. From now in "GUN-NAC CONTROL ROOM" will be extra option to set on/off invulnerability.

(UNI) Instant Shop:
When at the shop you cannot buy something, before exit it, press and hold second controller2. This will give you extra 10$ and allows to buy extra weapon at the game start. When using debug mode flag mentioned below, amounth of money will be 30$ instead of 10$.

(UNI) Instant Bonus:
Pause the game, then hold B then press Start. Exit the pause mode and blue bonus will appear.

(UNI) Alternate ending:
After game completion, when first demo sequence about to end, before credits rolls, hold A + B on first controller to view alternate ending sequence instead STAFF. This will enable "Invulnerability" option in configuration menu as well.

(UNI) Quick configuration:
Before Reset hold A + B buttons on first controller.

Gun Sight, Laser Invasion

Japan version:

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

Gun.Smoke

All versions:

(UNI) Change controls:
Press A, B, B, Right, Right, Right, Left, Left, Left, Left, Up, Up, Up, Up, Up, Down, Down, Down, Down, Down, Down very quick at the title screen, then press Start. You can control fire direction by direction keys, instead A or B or A + B.

Hatris

Both 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.

Japan version:

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

Heisei Tensai Bakabon

Japan version:

(UNI) In-game reset:
Press at the same time Select + Start to reset game.

Hi no Tori - Houou Hen - Gaou no Bouken

(UNI) CRC test:
Hold A + B buttons then press Reset. If CRC ok, message "HINOTORI ONE' appears, in other hand "HINOTORI TEN" appears.

Hit the Ice

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

Hokuto no Ken (J)

(UNI) Reverse controls for Player 2:
Select two players mode. Shout to the microphone on second controller 10 times at the title screen, then hold on second controller Down + Left + A + B and press Start on first controller. From now second player's movement controls will be reversed. This cheat only works for Famicom system.

Hokuto no Ken 2 - Seikimatsu Kyuuseishu Densetsu, Fist of the North Star

(UNI) Reverse controls for Player 2:
Select two players mode. Shout to the microphone on second controller 10 times at the title screen, then hold on second controller Down + Left + A + B and press Start on first controller. From now second player's movement controls will be reversed. Note: This cheat only works for Famicom system, in US version all needed code is presented, but there is no microphone on second controller of NES system.

Home Alone (U)

(UNI) Secret message:
At the copyright text screen press on first controller or second controller Up + Left + A + B + Select once then Down + Right + A + B + Start, "HOME ALONE EXTRA SPECIAL" screen will appears. This extra copyright screen available in all Bethesda's games with the same code.

Home Run Nighter '90 - The Pennant League

(UNI) Sound test:
Hold A + B at the title screen on second controller.

Honoo no Doukyuuji - Dodge Danpei (J)

(UNI) Secret passwords:
HEBE-Cutscene test mode. You can select one of game cutscenes to play.

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 ending credits at the title screen or select destination on map then press B to go there immediately without level completion.

Hototogisu

(UNI) Repeat demo sequence:
When at start, title shown at the center of the screen and plays music, after two music cycles running out there is demo sequence starts. At end of demo sequence title screen shown agian then some message appears on screen for a couple of seconds. Quickly press Up, Up, Down, Down, Left, Right, Left, Right, B, A on first controller and demo sequence will start again without waiting.

Huang Di

(UNI) Palette roll:
When "ASDER" logo is displaying, hold on first controller Down + Left + B + Select, palette flashing will change. Reason for this is unknown.

(UNI) Extra health:
While in game each time you press Up + B in any combinations with other buttons, internal counter is increasing up to 3 and when you get harmed this counter decreased instead of main lives counter. So, your player can be practically invincible if Up + B will be always pressed.

Hudson Hawk

All versions:

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

Huge Insect

US version:

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

Hunt for Red October, The

(UNI) Invulnerability:
Pause game play then 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 bottom of screen will turn green. Note: this code may only be enabled once per game.

(UNI) Unknown:
Pause game play then press Select, bottom part of the screen will turn green. Note: this code may only be enabled once per game.

Hydlide 3 - Yami Kara no Houmonsha

Special version:

(UNI) Sound test:
Complete game once. Do not start new game, select "CONTINUE" from title menu and return to Hidden Village on the Cemetery South-East (you should be at least 7th level or should have INTELLECT at least 50th level to open hidden passage). Just step before grave in 5th column from left, 2nd row from bottom. When entering Hidden Village head to the west, then enter CHURCH (or HANGAR) to the left from INN. Menu with music titles appears. Press any button to cycle throught compositions, press B to exit.

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 (E), Indiana Jones and the Last Crusade (U) (UBI Soft)

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

Insector X

(UNI) Secret message:
Enter to "OPTION MODE" menu, move cursor to "EXIT" option then press Right 35 times and after that Left one time. Message "PRGD. BY JYOJI HIRAYAMA" will appear.

(UNI) Level select and no hit mode:
Enter to "OPTION MODE" menu, move cursor to "EXIT" option then press Right, Left. At "BOY/GIRL" select menu press Up to select level and Down to change "HIT/NOT" mode with normal lives or invincibility accordingly.

International Cricket

(UNI) Sound test:
After power on, when copyright screen is displayed press and hold A + Select + Start on second controller. You need holding these buttons all time while copyrights is displayed or not much less. Then Sound test mode will appear.

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

(UNI) The Beam team:
Enter "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 "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 both on controllers one and two then press Start on first controller.

(UNI) Bonus chance cheat:
At the title screen hold Up + B + Select then press Start on first controller. You can play in bonus chance game at any shop without loosing. Now you have 40 tries with fixed behavior. Skull will fall into cups in that order: 1, 4, 3, 2, 1, 4, 3, 2, 1... and so on. So you can win 12000 gold.

Isolated Warrior, Max Warrior - Wakusei Kaigenrei

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

Itadaki Street - Watashi no Mise ni Yottette

(UNI) Sound test:
A 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.

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:
Press and hold Up + Left + B on second controller, then hit Reset. At the title screen on first controller press Left/Right to increade/decrease sample index by 1, press Up/Down to increase/decrease sample index by 0x10. Press A to play sample, press B to stop playing.

(UNI) Cheat mode:
Press and hold Up + Left + B on second controller, then hit Reset. During game, enter pause mode, then hold one of the following buttons on second controller and exit pause mode to get according 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 normal staff roll appears, after it, 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.
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.

Jovial Race

European version:

(UNI) Extra 29 lives:
When first title screen appears after two car crashes press A, B, Up, Down, Up, Down, B, A then press any other button except A or Start then start the game.

Kaiketsu Yanchamaru 2 - Karakuri Land

US version:

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

Kick Master

(UNI) Password generator:
Level:
Sector:
Lives: note: 0=3
Quest:
Magic:

Random:
Password:

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

King Kong 2 - Ikari no Megaton Punch

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

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

King of Fighters 96

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

King of Kings (J)

(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 second controller. Name of save record will be now "ILOVEYOU".

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

(UNI) Stage select:
At wrestler selection screen hold A + B on second controller then press simultaneously Up or Down on second controller and B on first controller to increase or decrease stage number accordingly. Press Start to start game in selected Stage.

Klash Ball

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

(UNI) Sound test:
Hold Right on second controller then press Reset. "Makinota show" screen will appear.

Koushien

(UNI) Secret team:
Hold A button on first controller then press Reset. While demo cutscene rolls, before title screen appears, press Up, Up, Down, Down, Left, Right, Left, Right, B, A on first controller. Select one or two player mode, for first player 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

Japan version:

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

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

(UNI) Level select:
At the title screen press on second controller Up, Down, Up, Down, Left, Right then hold Select and press A on first controller. Press Up or Down buttons 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.b
(UNI) Invulnerability:
At the title screen press on second controller Up, Up, Down, Down, Left, Right, Left, Right, A, B, A, B then hold Select and press A on first controller.

Kujaku Ou 2

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

Kyonshiizu 2

(UNI) Extra 100000 money:
At the game beginning, from starting point make 3 steps to south and stand under gate's roof. Then press Start to pause game and press Select, world color will change to red. Now press at the same time Down + A + B on second controller. Unpause the game and enter back to temple. If you did right, Otera give to you 100000 money.

Kyuukyoku Harikiri Koushien

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

Kyuukyoku Harikiri Stadium 3

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

Kyuukyoku Tiger, Twin Cobra

Japan version:

(UNI) Unlockable:
When "the end" message appears on screen after credits, message "Your password is KTTAISONMAI89PRTN23Y" appears. There is no any password entering mode in FC nor in GEN or PCE versions. Password meaning is unknown. English version haven't any staff messages displayed nor "password" message too. But all contaied in ROM data.

Last Ninja, The

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

Legend of Prince Valiant, The

(UNI) Invulnerability:
Press Select, Up, Left, Right, Down, Left at the title screen, screen flashes b/w.
Thanks Kitsune for corrections.

Lethal Weapon (Tw)

US version:

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

Linus Spacehead's Cosmic Crusade

US version:

(UNI) In-game reset:
Hold A + B then press Select + Start.

Little Mermaid - Ningyo Hime, Little Mermaid, The

(UNI) No damage:
At the title screen hold Right + A + B on second controller then press Start on first controller. Select "no damage" to get invulnerable.

Little Ninja Brothers, Super Chinese 2 - Dragon Kid

Japan version:

(UNI) Secret passwords:
きいてくれよ-Sound test
ふるそうび-Full equip at start
さいご-Ending sequence

Little Samson, Seirei Densetsu Lickle

All versions:

(UNI) Restore energy:
At very end of the game on Normal mode when dark castle arrived, on screen with castle image and flashing lightings press Up, Down, Up, Down, Right, Left, Right, Left, A, B, A, B. Nothing seems happened. Just start game and play.

Locksmith

US version:

(UNI) Secret copyright:
At the title screen press A, B, B, Select, A, B, Select, B, A, Select. Secret screen with copyrights will appear.

Lost Word of Jenny

(UNI) All keys:
Press Start at the title screen and wait before pumpkin carriage stops in center of screen, right after that press once Select button then enter following combination: Down, Right, B, Left, Right, A, Up, Down, A, Left, Up, B. After game starts you will have all keys.

Lupin Sansei - Pandora no Isan

(UNI) Warp to Level 2:
Press Up, Down, Left, Right, B, A at the title screen.

(UNI) Warp to Level 3:
Press Left, Right, Up, Down, A, B at the title screen.

(UNI) Warp to Level 4:
Press Down, Up, Right, Left, A, A at the title screen.

Magic Bubble, Mermaids of Atlantis

(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:
Hold Up + Right + A + B on second controller and Up + Right + A + B + Select + Start on first controller then press Reset. Use Left or Right on first controller to select music and Left or Right on second controller to select sounds.

Magic Darts

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

(UNI) Secret message:
Hold on A + B buttons at the title screen, press Start to enter "SELECT YOUR GAME!" menu then hold Select until message "BY K1 NAKANISHI" appears.

Magic Mathematics

(UNI) Secret message:
Start new game in any mode, after current question was written on screen and programm waits your answer, on second controller press Up, Up, Up, A, A, A, Down, Down, Down, B, B, B, Left, Left, Right, Right. Secret copyright message will appear on screen:
PRGRAM :
        MATHMATIC VOL.1
WRITTEN:
        MA LI-CHEANG
          (L.C. TCHACVOSKY)
PRODUCE:
   THIN CHEN ENTERPRISE
      CORPORATION
ADDRESS:
        NO.65. LONG MEN ROAD.
        SAN CHUNG.
        TAIPEI TAIWAN. R.O.C.
    

Mahjan Samit Kabukicho Hen, Mahjong World

Hacker version:

(UNI) Cheat mode:
At girl opponent select screen press A, A, B, Right, A, Left, B, Down, A, Up then select any girl and start the game. From now by pressing A button you will be able to select any mahjong tile to add to your pool, instead of random one. This cheat enabled only in "Hacker" version of that game. "Sachen"-only version have cheat sequence check present for "adult" mode (thrid title menu option) and can be entered at "adult mode" warning screen, but haven't used by any other part of game. "Sachen-FC" version have this cheat totally disabled.

Mahjang Companion, Mahjong Academy

(UNI) Cheat mode:
At girl opponent select screen press A, A, B, Right, A, Left, B, Down, A, Up then select any girl and start the game. From now by pressing A button you will be able to select any mahjong tile to add to your pool, instead of random one.

(UNI) Easter egg:
Do not enter "Cheat mode" code, then while in-game during player move on second controller press the same combination A, A, B, Right, A, Left, B, Down, A, Up. Screen with copyright message written in kanji appears.

Majaventure - Mahjong Senki

(UNI) Cheat menu:
Press Select at the title screen to select "continue" mode. Then hold Up + Select buttons and press Start to enter stage select menu. Hold Select button again and press Start button to enter boss select menu, and finally hold Select button then press Start to enter to sound test menu.

Majou Densetsu 2 - Daimashikyou Galious

(UNI) Password generator:
Note: bytes 0x00, 0x04, 0x10 are decimal numbers, each octet not greater than 9.
Random:
Password:
Password:

Maniac Mansion (J)

(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) Sound test:
This game have very strange cheat enabling procedure. While title screen awaits pressing any button before starting demo sequence, holding some buttons increase internal counters which will compare with some values after starting a game. Counters are 8-bit values that cycles repeatedly from 00 to FF. Each cycle takes up about 8 seconds. For enabling cheat you should hold corresponding buttons for some seconds each in any order.
There is 4 counters and 4 buttons to hold. First one is button A on second controller, needed counter value is between B4..F0. Second one is B button on the same second controller, needed counter value between 3C..78. The rest buttons is on first controller. This is Select button, value between 78..B4. And finally B button, value between 5A..78.
For enabling Sound test mode you need hold on second controller A button about 5-7 seconds, B button about 3-4 seconds and Select on the first controller about 4-5 seconds then press Start on first controller.

(UNI) Extra 20 lives:
As described above you shold hold B button on the first controller at the title screen about 3-4 seconds then start the game.

Mappy-Land

Japan version:

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

Master Fighter 2, Street Fighter II (YOKO)

All versions:

(UNI) Zangief ending sequence:
Press B, A, A, A, Left, Right at the title screen, then press Start.

(UNI) Zangief VS. Vega:
Press B, A, A, A, Down, Down at the title screen, then press Start.

YOKO version:

(UNI) Unlimited health bar:
Press Left, Left, B, A, A, Left at the title screen.
Thanks Kitsune for corrections.

Mechanized Attack

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

Meiji Ishin

US version:

(UNI) Something like quiz:
Press Up, A, B, Left, A, A, A, A, B, Right, B, A, Down, B, B, A + B at the title screen, second controller.

Meimon! Takonishi Ouendan - Kouha 6 Nin Shuu

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

(UNI) Invulnerability:
At map screen select and enter "パスワード" option where is your current password is displaying then press Up, Up, Down, Down, Left, Right, Left, Right, B, A. A sound will confirm correct code entry. If you enter code twice cheat is disabled but you can enable it any time.

(UNI) Credits:
After game completion at "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:
Press A button at the title screen 20 times.

Menace Beach

(UNI) Skip level:
There is two different ways to trigger that 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 first pressed), white color flashes to red. A sound confirms correct code entry. Then press B button to trigger cheat and message "YOU BIG CHEATERHEAD!" appears. Second one: start new game then press at the same time Up on second controller and Up + A + B on first controller, you will be returned back to title screen if cheat is triggered. From now while in-game press B + Select on first controller to advance to the next level up to ending animation sequence.

(UNI) Secret message:
Complete game. When ending animation sequence ends and message "PRESS A TO REPLAY SCREEN, PRESS START TO RESTART GAME" appears, press and hold Down + Left + Select. While holding these buttons, a sound will play 10 times then 5 times in row then immediately secret message appears at the bottom of the screen.
  STOP! HIDDEN MESSAGE TIME!
I'D LIKE TO THANK THE FOLLOWING
 GOOFBALLS FOR BEING MY BUDS.
KEITH THE STICK, GARY "ELVEZ"
THE MASTER WORDSMITH, RUSTY THE
 SURFING CARROT TOP, BOOBALA
THE GREAT, KAREN JO THE SPARE
DANCING POOL SHARK, AND LAST
BUT STILL LOST, JIM THE DUDE!
 NINA'S LAST NAME IS BEDNER.
    

Metal Fighter

(UNI) Extra 5 lives:
At the title screen press Down, A, Up, A then press any other button or Reset.
Info from Яковлев Виктор

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.

Millionaire

Aladdin version:

(UNI) Secret message:
There is one more copyright message secretly encoded inside ROM. To view it in-game during player one move press Up, Start, Left, Select, Down, Select, Right, Start, Select, Select, Start. Message:
         COPYRIHT 1990
THIN CHEN ENTERPRISE CORPORATION
    BY  LC GROUP
    
appears. It seems that message was some kind of copyright protection. Encoded message is invisible in ROM and cannot be modified by pirates.

Minelvaton Saga

(UNI) Fast moving:
At the title screen press Up, Up, Down, Left, A, Left, Right, Down, Down, B, press Start and title screen will change color to black. From now press Start in game to enable and Select to disable fast moving (maybe there is much more effects just now unknown).

Mirai Shinwa Jarvas

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

Mission Impossible

(UNI) Secret passwords:
LRHN-Level 1
KMVW-Level 2
XDGJ-Level 3
QBYZ-Level 4
HMPR-Level 5
TVJL-Level 6
YGKX-Computer level
MTKN-Computer password

Mitsume ga Tooru

(UNI) Debug menu:
At the title screen hold A + B buttons on second controller, simultaneously on first controller hold Select and then press Start.

(UNI) Level select:
At the title screen hold A + B buttons on second controller, press on first controller A, A, A, A, B, B, B, B, A, B, A, B, A, B, A, B.
Info from Яковлев Виктор

Mobile Suit Z Gundam - Hot Scramble

(UNI) Debug monitor:
At the title screen on second controller 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, message "MONITOR ON" appears instead of hi-scores but only if title screen is renewed after showing again after 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 first controller or buttons on second controller, with Select on first controller you can advance game by frame by frame.

Momotarou Dentetsu

(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

Monster In My Pocket

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

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

Moon Crystal

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

Mortal Kombat 3 - Special 56 Peoples

(UNI) JY company's easter egg:
Press Up, Right, A, Down, Right, B, Up, Left after demonstration mode starts.

Mouryou Senki Madara

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

Ms. Pac-Man (U) (Tengen)

(UNI) Level skip:
Pause game and press following buttons 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 button 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) Maximal 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) Slow dog:
At the title screen press at the same time Down + A + B on first controller. Running dog will stuck confirming correct code entry. From now dog in game will be slower.

Mutant Virus, The

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

Nangoku Shirei!! - Spy Vs Spy

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

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

Nantettatte!! Baseball

(UNI) Credits:
Press Up, Down, Left, Right, Up, Down, Left, Right, B, B, B, A at the title screen when message "push start" appears.

(UNI) In-game reset:
Press quickly Start then Select.

Napoleon Senki

(UNI) Sound test mode:
At the scenario select screen press Left + A + B on second controller.

Navy Blue

(UNI) Sound test:
At the game end, after ending animation is over and screen with "Presented by I'MAX" is displayed, press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Select.

(UNI) Password generator:
PositionField
Random:
Password:

Nekketsu Kakutou Densetsu

(UNI) Password generator:
Note: you can not set any name used in game for other characters as your name while creation your char. Also that names can not be used in passowrd. But one exception: name "くにお" allow you to play as Kunio itself. Notice that he have 5th blood type instead any of 4.
Blood type:
Name:
Birth:-Month-Day
Level:
Team:
Bits:
Random:
Password:

New York Nyankies, Rockin' Kats

Japan version:

(UNI) Secret passwords:
たたかえてきたおせ -Last Boss. Note: only 9 symbols used
みせておくれみせて5-Ending sequence
きついねこれきついね-Bonus level.
くれアイテムくれくれ-All items.
ほしいおかねくれくれ-Extra 5000 money.
ねこ50ねこ50ねこ-Extra 50 lives.

US version:

(UNI) Secret passwords:
F♊GHTB♋SS -Last Boss. Note: only 9 symbols used
♉ND♊NG5♥♥♥-Ending sequence
M♈PH♈RDM♈P-Bonus level.
P♋W♉R★♌P!!-All items.
G♉T!M♋N♉Y$-Extra 5000 money.
K♈TS50K♈TS-Extra 50 lives.

Ninja Cop Saizou, Wrath of the Black Manta

Japan version:

(UNI) Invulnerability:
Press B, B, Select, A, Up, Select, Right, Start before title screen, "MUTEKI" text appears.

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

US version:

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

Ninja Kun - Ashura no Shou

All versions:

(UNI) Freeze hi-score:
Press A, B, A, B, B, A, B, A at the title screen.

Nuts & Milk

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

Operation Wolf

Japan version:

(UNI) Empty cheat:
Press Up, Down, Right, Left, A, B, Down, Up at the title screen, cursor will not disappear after shooting on the level selecting screen. No other effects found.

Over Horizon

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

P'radikus Conflict, The

(UNI) Hi power weapon:
Press B, Up, Right, A, Down, Left while pause game, a sound will confirm correct code entry.

Palamedes 2 - Star Twinkles

(UNI) Sound test:
At the title screen hold A + B on second controller then press Start on first controller.

Panda Prince

(UNI) Copyright screen 1:
At the title screen press Up, Left, Down, Down, Right, Right, Left, Up.

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

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

Panda World

(UNI) Level skip:
Pause the game and press Select to enable cheat mode, then press Up, Up, Down, Down, Left, Left, Right, Right, A, A, B, B. Press Start to advance tothe next level. If you enter code wrong, just press Select again in pause mode for reset cheat entering sequence, and enter code again.

Panic Restaurant, Wanpaku Kokkun no Gourmet World

(UNI) Extra 1 life:
In game, when 0 lives left, scores are divisible by 200 (eg 200, 600, 2200, etc.), and 50 seconds left, press Start to pause game, then press A + B, extra one life (not heart) will be obtained.

Parallel World

(UNI) Secret passwords:
All number corresponds to certain patterns on the password screen. Blank pattern (without any routes) have number 19. Each number means how much times you should press A button to reach desired pattern.
5, 1, 1, 6
9, 1, 1, 7
2,19,19, 2
3,19,19, 3
-Sound test
5, 1, 1, 6
2, 5, 6, 2
2,19, 2, 2
4, 1, 3, 2
-Ending sequence

Parasol Stars - The Story of Bubble Bobble 3

(UNI) Unlimited Continue:
Press A, B, B, A, Left, Right, Left, Right at the title screen, "c" letter appears in upper left screen corner.

Paris-Dakar Rally Special

(UNI) Unknown:
Press Up, Up, Down, B, Right, Left, Left at the title screen.

Pipe Dream

(UNI) Time pause:
During game press Start, continue holding Start then press B, A, A, B, 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.

(UNI) In-game reset:
During game press A + B + Select%, to end the game instantly.

Platoon

(UNI) Secret words:
Enter one of following words as player name for the hi-score screen:
KOMADA-Sound test
SUZUKIKUN-Ending sequence 1
HIROKUN-Ending sequence 2

Pocahontas (As)

(UNI) Stage select:
Before title screen appears press A + B + Select + Start.

Pocahontas 2

(UNI) Debug mode:
At the title screen press Up, Left, Down, Right, A, A, B game starts in debug mode. Now pause the game and press A + B button, you'll be able to move Pocahontas any place of map. Press Start again to throw she to new place.

(UNI) Level select:
At the title screen, before pressing Start button hold following buttons:
Down-Level 2
Left-Level 4
Right-Level 6

Poker Mahjong

(UNI) Easter egg:
Select "for adult" game mode (thrid option at the title menu), on screen with game and password menu options press A, B, Up, Down, Left, Right, Select, Select, Select, Select. Message "Sachen" appears.

(UNI) Cheat mode:
During player move, 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 random one. Enter cheat one more time to toggle game back to normal mode.

Power Blade (U), Power Blazer

Japan version:

(UNI) Power Boomerang:
Press Left, Up, Right, Down, Up, Up, B, A, B, A at the title screen.

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 3

Both versions:

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

Power Rangers 4

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

Predator

All versions:

(UNI) Skip normal level mode:
During normal levels, press Left + Right + A or Left + Right + B at the same time. Due to different controls handling routines, there is no similar cheat in big mode levels. Note that you cannot normally press opposite directions on normal controller's d-pad. You must use modified one.

President no Sentaku

Japan version:

(UNI) Sound test:
Press A twice, B twice at the title screen, then press Start.

(UNI) Ending sequence:
Press A three times, B three times at the title screen, then press Start.

Prince of Persia

(UNI) Password generator:
Level:
Time:
Random: 
Password:

Pro Action Replay

Version 1.2:

(UNI) Secret message:
Hold Select button then press Reset. Screen with programm version, copyrights, date and checksum appear.
ACTION REPLAY  V1.2




    PROGRAM..   W.H.BECKETT

    DESIGN...   W.H.BECKETT
          ...   M.J.CONNORS
          ...   C.R.HARDING

		  
		  
    DATE.....   26/11/92

	
    CHECKSUM.   53
    

Pro Sport Hockey, USA Ice Hockey in FC

Japan version:

(UNI) Sound test:
Hold Select + Start buttons then press Reset.

Probotector II - Return of the Evil Forces, Super C, Super Contra (J)

Japan version:

(UNI) Level Select:
At the title screen, press and hold Down + Select then press Start. Select area number then again press Start.

Punisher, The

US version:

(UNI) Double lives:
At the any mission selection screen press on second controller Left, Right, A, Right, B, Up, Up, A. A sound will confirm correct code entry. You can enter code four times during the game before any new mission. Code can be combined with any other codes.

Pyramid

Sachen-Hacker version:

(UNI) Picture test:
At the title screen press Up, Down, Left, Right, Up, Down, Left, Right. Screen with girl picture appears, by pressing Select you can switch between naked girl pictures, by pressing d-pad buttons select palette index and change it by pressing A button. Girls pictures only present in "Hacker" version, AVE and pirate versions havent nude pictures at all.

Pyramid II

(UNI) Secret message:
While in-game press Up, Up, Up, Up, Up, Up, Up, Up, Select, Select, Select, Start. Message "(c)1990 SACHEN BY: L.C.TCHACVOSKY" appears at the bottom of the screen. In ROM this string is encoded with simply XOR code and cannot be found in dump easily.

Quarter Back Scramble

(UNI) Sound test:
At the title screen after message "push start" appears hold A button then press Right, Up, Left, Down, Right, Down, Left, Up then release A button, hold B button and press Right, Up, Left, Down, Right, Down, Left, Up again. Because cheat count only correct pressings, but not care about wrong ones, just hold first A then B buttons and roll over D-pad buttons for some times.

Quattro Arcade

C.J's Elephant Antics game:

(UNI) Secret words:
Enter one of following words as player name for the hi-score screen:
ZIP-
POW-
B52-
WIZ-
SQC-another level
EPX-another level
AZS-another level
37!-energy drink, unlimited bombs

Racer Mini Yonku - Japan Cup

(UNI) Select course:
Press A, Up, Left, B, Down, Right, Start at the title screen. Cause another game mode with course selection mode (four options).

(UNI) Select course:
Press Left, Down, A, Right, Up, B, Start at the title screen. Cause another game mode with course selection mode (six options).

Rainbow Islands - The Story of Bubble Bobble 2

Japan and US versions:

(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.

US version:

(UNI) Start with maximum power:
Press Start to pause game play, then press Up, Down, Left, Right, A, A, B, B 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.

Japan version:

(UNI) Start with maximum power:
Press Start to pause game play, then press B, A, A, Up, Down, Down, B, Right 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.

Rampage

European version:

(UNI) Day Select:
At the title screen press B on second controller and B + Select on first controller at the same time. Now after selecting mutant new option "SECRET COMMAND SELECT DAY" will appear. You can select any starting day by pressing direction buttons.

Ren & Stimpy Show, The

(UNI) Secret message:
At the game copyrights and trademarks screen, before title screen appears press quickly Up 1 time, Right 1 time, Down 9 times, Left 6 times in any order and combination, only press every button given number of times. Screen with dedication to the family of Shen Jan Long (one of game programmer) appears. To exit to normal game press Up.

Robin Hood - Prince of Thieves

(UNI) Extra 4 lives:
Press A, A, B, A, B at the title screen. A sound will confirm correct code entry.

(UNI) Extra 6 lives:
Press A, A, A, A, B, B, B, A at the title screen. A sound will confirm correct code entry.

(UNI) Cheat mode:
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 at the title screen. A sound will confirm correct code entry. Pause the game to toggle debug mode on and off. While in cheat mode, instead of game menu, after pressing Start cheat menu appears where you can warp to other locations, or fight with bosses. Your hitpoints will be always 100, and periodicly you status will be cleaned and restored automatically, also you can walk through the walls and doors without keys.

Rod Land

(UNI) Level select:
Enter first fairy name as "ICH" and second fairie as "EAT", now press Select throught 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.

Rolling Thunder

Japan version:

(UNI) Extra 5 continues:
At the main title menu hold Up + A on second controller, then hold Up + B and press Start on first controller.

Route-16 Turbo

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

SD Battle Oozumou - Heisei Hero Basho

(UNI) Easy mode:
At "START/CONTINUE" title menu press Up, Left, Down, Right, B, A, A, B. From now in battle you won't take any side effects if HP less than 9.

SD Hero Soukessen - Taose! Aku no Gundan

(UNI) All heroes:
Press Up, Right, Down, Left, B, B, A, A on game pause, heroes will be selectable during gameplay by pressing Select.

SD Keiji - Blader

(UNI) CRC test and SRAM check:
Press and hold Up + Down + Left + Right on second controller then press Reset then release buttons, after a while message "プログラム  オーケー" appears if PRG CRC test is pass and "キャラクター オーケー" if CHR CRC test is pass, in other case you will see message "エラー" instead or "オーケー" if some of CRC test fails. Though, there is not possible to press all these buttons at the same time on normal controller. These message will be displayed until you press A button on first controller and then SRAM test will be performed. Programm checks for SRAM data blocks signatures and if not find them, displays message "エラー" and reinit SRAM with correct signatures. In other case message "オーケー" will be displayed and game runs further.

(UNI) CRC test and Staff roll:
Press and hold Up + A + B on second controller then press Reset then release buttons, after a while message "プログラム  オーケー" appears if PRG CRC test is pass and "キャラクター オーケー" if CHR CRC test is pass, in other case you will see message "エラー" instead or "オーケー" if some of CRC test fails. While test is performing and displaying for a short time press and hold Right + A + B on second controller. Staff roll will be displayed after a short delay.

(UNI) CRC test and Maximum level:
Press and hold Up + A + B on second controller then press Reset then release buttons, after a while message "プログラム  オーケー" appears if PRG CRC test is pass and "キャラクター オーケー" if CHR CRC test is pass, in other case you will see message "エラー" instead or "オーケー" if some of CRC test fails. While test is performing and displaying for a short time press and hold Left + A + B on second controller. Game will return to the title screen, now if you start new game your character will have maximum level 59 and other characteristics.

Saiyuuki World (J)

(UNI) Cheat mode:
Press Up, Down, Up, Down, A at the title screen. 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 first controller.

Saiyuuki World 2 - Tenjoukai no Majin, Whomp'Em

(UNI) Quick boss:
Pause the game by pressing Select button. Оn second controller 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 current level's boss.

Seikima II - Akuma no Gyakushuu

(UNI) Level select:
Press B, A, A, B, A, A, B, A, A, A, B, A, B at the title screen.

Shin Samurai Spirits 2 - Haoumaru Jigoku Hen

Japan version:

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

Side Pocket

(UNI) Extra 256 balls:
Press Left, Right, Right, B, Right, Left, B, Left, B, Right, Left, B on challenge screen, after starting game a sound will confirm correct code entry.

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.

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, only press every button given number of times. 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, press and hold Select until credits appear. Backroung of credits screen will change from "BARTMAN" graphics to various names.
Info from BMF54123

Sky Destroyer

(UNI) Invulnerability and slow fire:
Press and hold Select + Start buttons then press Reset. When the new game starts, there is no damage will be taken. In addition if you hold A + B buttons 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 on "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.

Somari, Sonic 3D Blast 5, Sonic 3D Blast 6

(UNI) Debug mode:
Press Left, Down, B, A, Right, Up, A, B, Up, Down, Up, Down at the title screen, you will may select level and play music.

Space Hunter

(UNI) Cheat mode:
Before entering any planet press and hold on second controller Right + A + B. After entering planet you will earn 255 power and at the bottom of the screen will be displayed current room coordinates.

Splatter House - Wanpaku Graffiti

US version:

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

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

(UNI) Restore energy:
In game press Start to pause the game, then press A + B on second controller, press Start again to return to game mode with fully restored energy. Be careful, after using this cheat three times restoring energy is unavailable.
Info from Яковлев Виктор

Square no Tom Sawyer

Japan version:

(UNI) Sound test:
Press Up, Up, Down, Down, A, B, Up, Down at the title menu on second controller. Change radio tuning to play next Song.

Star Force

Japan version:

(UNI) Invulnerability:
At the title screen on second controller press and hold combination of buttons that includes Up + A + B and at least one other button. Then press and hold Up + Left + A + B on first controller and finally press Start on first controller to start the new game with invulnerability.

Star Luster

(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 buttons to change the color, Left or Right to change the region of the screen to clorize.

Star Soldier

(UNI) Different graphics:
Cheat will work only if internal microphone triggered on by the loud voice, if it triggered once, you will be able to get that cheat triggered next 1-2 seconds. From now, press Select 5 times at the title screen. Then, hold Left + Right + A + B using both controllers. Then, press Select + Start on first controller once for enable cheat. Press Start while continue holding all pressed buttons to disable it back. Note: you can hold any buttons on any controllers to set full combination, but you can't press on one controller Left + Right simultaneously, so press opposite direction buttons on separate controllers. Release buttons and press Start to start the game. Normally you must complete 16 levels to get this graphics switched.

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.

Strider

(UNI) Password generator:
Shift:
Level:
Keys:
Boots:
Red Dragon:
Plasma Arrow:
Data Files:
Analyzed Data Files:
Unk:
Password:

Stunt Kids

(UNI) Level Select:
Press one of the following combinations at the title screen to enter various levels:
Right, Left, Right, Right, Left, Left, Right, Left
Select, Right, Select, Down, Select, Left, Select, Up
Select, Right, Select, Down, Select, Left, Select, Up
Left, Right, Select, Right, Left, Select, Up, Down
Up, Down, Select, Select, Up, Down, Down, Right
Right, Right, Left, Right, Select, Right, Left, Left
Right, Up, Left, Up, Right, Up, Select, Up

Summer Carnival '92 - Recca

(UNI) Stage select:
At the title screen enter "sound test" mode then press and hold A + B and press Select + Start simultneously. Each time you perform this operations, stage number increased by 1, now you can start game from any desired level including second missions (starts from 4th stage) and ending (12th stage). Level number cycled from 1 to 12 and after 12 changes back to 1.

Super Chinese 3

(UNI) Secret passwords:
あいう-Music Mode
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 mode
なにぬ-Message mode

Super Contra 3

(UNI) JY company's easter egg:
Press Up, Up, Up, Up, Down, Down, Down, Down, Left, Left, Right, Right before title screen.

(UNI) Stage select:
At stage info and scores screen before starting the level press A + B + Select.

Super Donkey Kong 2

(UNI) Easter egg:
Press Left, Left, Down, Up, Down, Left, Right, Up, Right, Left at the title screen.
Another way to get this secret is to press at the title screen A + B + Select, password screen will appears. Enter only one existing password: "STAYCOOL" (for "Hi-Game 1999" version this code is "HLSP1129").

(UNI) Reset to title:
Pause the game then press Select to return to title screen.

Super Donkey Kong [p1]

(UNI) Stage select:
Push at the title screen A + B + Select on first controller.

Super Mario World

(UNI) Level select:
Press Select, Select, Select, Select, Select, B, B while map mode. Then press Select to enter Level select screen.

(UNI) JY company's easter egg:
Press Up, Right, A, Down, Right, B, Up, Left during game pause.

Super Pang

(UNI) Easter egg:
Pause game then press A, B, Up, Down, B, A, Down, Up. Message "SACHEN" appears above "PAUSE" message. During pause mode you can press Select to reset password entering and start again if you missed something.

Super Pang 2

(UNI) Easter egg:
Pause game then press A, B, Up, Down, B, A, Down, Up. Message "SACHEN" appears above "PAUSE" message. During pause mode you can press Select to reset password entering and start again if you missed something.

Super Robin Hood

(UNI) Extra 4 lives:
At the title screen hold Left + A then press Start.
Info from Яковлев Виктор

Super Shinobi

(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.
Info from Яковлев Виктор

Super Turrican

(UNI) Invulnerability:
Select "Highscore" at the title screen and after they shows up 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.

Super Xevious - Gump no Nazo

(UNI) Level select:
Start new game, before destroying any enemy press Start to pause game. Then press Up, Down, Left, Right, A, B. "Enter Password" screen appears. Press Left or Right to select digit, press A or B to select number.
6974-Level 2
1797-Level 3
5328-Level 4
3580-Level 5
6541-Level 6
3024-Level 7

T& C 2 - Thrilla's Surfari

US version:

(UNI) Infinite lives:
Press Left, Up, Right, Up, Right, Down, A before game starts.
Thanks Kitsune for corrections.

Tag Team Pro-Wrestling, Tag Team Wrestling, Special Tag Team Pro-Wrestling

(UNI) Super Tag Team Champions:
Press Up, Right, Down, Left, Down, Right, Up, Left, A, B on title screen then start a new game.
not complete

Taiyou no Shinden - Asteka 2, Tombs and Treasure

(UNI) Sound test:
Hold A + B on first controller and press Reset.

(UNI) Debug mode:
Start the game, then take all items on the table and exit the lab. Now enter the Nunnery directly north. When in the Nunnery: take the Ixmol Jewel held by the statue, wash the Ixmol Jewel, put Sword, wash Lighter. Then you should see the message "Nothing has changed", now hold Select + Start and press A and the numbers "3 00" will appear. Hold B, press Up or Down to select an area, press Left to change to the new area and then Start to begin the new area. Press Up or Down for item select, press A to turn item "on" or "off" the new item and press Start to enable the changes. Additionally exit the debug menu by pressing Start, then highlight "PULL", hold Select + Start and press A. The number 64 should appear, then press Left or Right to switch between sounds and press Up to listen to it. Press Down to stop listening to the selected tune.
Info from NesWorld

Taiwan Mahjoing II

(UNI) Easter egg:
While in-game during player move on second controller press the same combination A, A, B, Right, A, Left, B, Down, A, Up. Screen with copyright message written in kanji appears.

Tasac

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

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 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 Hero Turtles II - The Arcade Game (E), Teenage Mutant Ninja Turtles (J), Teenage Mutant Ninja Turtles II - The Arcade Game (U)

Japan version:

(UNI) Extra 10 lives:
Press Right, Right, Right, B, B, B, A, A, A, Start on the title screen before demonstration starts.

(UNI) Stage Select:
Press Left, Left, Left, B, B, B, A, A, A, Start on the title screen before demonstration starts.

(UNI) Stage Select, extra 10 lives:
Press Left, Right, B, B, B, A, A, A, Start on the title screen before demonstration starts.

Teenage Mutant Ninja Turtles - Tournament Fighters

US version:

(UNI) Unknown:
When demonstarting fight starts, press Up + A + B on second controller. Player and background mode selecting screen will appears.

Tekken 2

Japan version:

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

Tetrastar - The Fighter

(UNI) Cheat menu:
Hold A + B and press Start to entering cheat menu with "Sound" option enabled by default, allows you to play sound and music.
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 button change repeatedly "phoenix" option until it stops changing in "on" position, then press Left button 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 cutscene.

Thexder

(UNI) Credits:
At the title screen press on first controller following sequence 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. Note: when entering code sequence do not release previous pressed button before next one is not pressed. For example: hold Up, press and hold Right, release Up, press and hold Down, release Right and so on.

Tiny Toon Adventures (U)

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.

Japan version:

(UNI) Stage select and player no damage:
At the title screen press Up, Right, Down, Left, Up, Right, Down, Left, B, A, Select, Select, Select, Start. Choose level by pressing Up or Down, switch "no damage" mode by pressing Select then press Start.

Tiny Toon Adventures 6

Japan version:

(UNI) JY company's easter egg:
Press Down, Down, Left, Up, Right, Left, Up, Down at the title screen. You can enter one of following passwords to access another levels: 2418, 7449, 3065, 8914, 3185.

Titan

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

(UNI) Extra 15 lives and Level 80:
Hold Down + A + B + Select + Start on first controller and A + B on second controller simultaneously, then press Reset. Release all buttons.

(UNI) Unknown:
Hold Down + A + B + Select + Start on first controller and A + B on second controller simultaneously, then press Reset. Continue holding buttons on second controller, release buttons on first controller and press on it following combination: A, A, A, B, B, B, A, A, A, then press any other button to complete sequence.

Tokoro San no Mamoru mo Semeru mo

(UNI) Level select:
Press Up, Down, Down, B, Right, A, Left at the title screen, then hold B and press A up to 14 times.

Top Rider

(UNI) Change controls:
Normally game works only with special controller "Top Rider", you can only select menu items with normal controllers. At the title screen press A, B, Right, Down, Left, Up, Right, B, A on second controller. The game will start immediately. From now you can control the bike with normal controllers instead of "Top Rider" special controller.

Toy Story

(UNI) Stage select:
At the title screen press A + B + Select on first controller.

Tower of Druaga, The

(UNI) Level select:
At the title screen press Up, Down, Left, Right, Down, Up, Right, Left, Left, Right, Down, Up, Right, Left, Up, Down, but just before pressing last button press and hold A on first controller and Left + B + Select on second controller at the same time. Choose "CONTINUE" and press Start, when message "FLOOR 1" appears you can choose any desired level by pressing Up or Down.

Tsuri Kichi Sanpei - Blue Marlin Hen

(UNI) Unknown:
Start the game and reach map mode. Move cursor upon the grid with letters, you can press A button while you selecting any letter. Just type following words, then press Start. Note: you can enter only one word at time, for another cheat you should reset console.
OWARI-
SUSYO-
ZANNEN-
SPEED-
DEBUG-

TwinBee 3 - Poko Poko Dai Maou

(UNI) Music test:
At the title menu select "OPTIONS" then hold on second controller Up + Right and press Start on first controller.

Uchuu Keibitai SDF

(UNI) Controls and soundtest menu:
At the title screen old A + B then press Start or Select.

Ultimate Mortal Kombat 3

14 people version:

(UNI) Easter Egg:
At the difficult select screen, press Up, Up, Up, Down, Down, Down, Left, Right.

Ultimate Mortal Kombat 4

(UNI) Easter Egg:
At the difficult select screen, press Right, Right, Right, Left, Left, Left.

Untouchables, The

(UNI) Stage skip:
To enable stage skipping you must complete at least first stage and write down name "XVQ" in hi-score table. Continue game, on stage number screen press Up + A + B. Game will return to title screen but game will continue with next stage. Press again the same buttons to advance next stage up to 7.

Vegas Connection - Casino Kara Ai wo Komete

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

(UNI) Message speed:
Hold on first controller Right button then press Reset.

Vegas Dream, Viva! Las Vegas

US version:

(UNI) Cheat mode:
Press Up, Down, Right, Left, Up, Down, Right, Left, A, B, A, B, B on game select screen, a sound will confirm correct code entry. From now you can hold A + B and press Start to enter "MESSAGE TEST" mode (there is two options "ENGLISH" and "JAPANESE" messages, but there is no japanese messages in english version). Or move cursor to "BLACK JACK" game, hold A then press Start to see game ending. Or move cursor to "ROULETTE" game, hold A then press Start to play lucky slot machine. Or move cursor to "SLOT MACHINE" game, hold A then press Start to enter "FACE TEST" mode. Or move cursor to "KENO" game, hold A then press Start to enter "SOUND TEST" mode.

Japan version:

(UNI) Cheat mode:
Press B, A, A, B, A, A, B, A, A, A, B, A, B on game select screen, a sound will confirm correct code entry. From now you can hold A + B and press Start to enter "MESSAGE TEST" mode (there is two options "ENGLISH" and "JAPANESE" messages, japanese version contain both language data for each dialog, you can switch any dialog to japanese mode in game by pressing Select instead of A at end of each dialog message). Or move cursor to "BLACK JACK" game, hold A then press Start to see game ending. Or move cursor to "ROULETTE" game, hold A then press Start to play lucky slot machine. Or move cursor to "SLOT MACHINE" game, hold A then press Start to enter "FACE TEST" mode. Or move cursor to "KENO" game, hold A then press Start to enter "SOUND TEST" mode.

Volguard II

(UNI) Secret words:
Play "Level 2" and beat default hi-score table record, then enter as player name for new hi-score:
NUKENIN?-Invulnerability. Start new game, press Start to pause game then press Up + Down + Left + Right + B + Select using both controllers. Since there is not possible to press opposite direction buttons on the same controller, use combinations of Down + Right for first controller and Up + Left for second controller for example pressed at the same time.

Wagyan Land (J)

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

(UNI) Higher difficult:
Press Down, Down, A, Down, Down, Down, B, Down at the title screen, title will change.

Wayne Gretzky Hockey

(UNI) Secret message:
At the copyright text screen press on first controller or second controller Up + Left + A + B + Select once then Down + Right + A + B + Start, "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 gameplay, pause the game then press A, B, A, Select, when unpaused, game will be waiting for extra input. Press B to skip to the next stage. 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 stuff. Press and hold Right button then press A, A, A, B, A, Start, A, Select, A, Select, A, Start, A, B, A, A. Name "ERIK T. KISS" will flash about 2 seconds. Now head to personnel and start new game. Instead of "San Francisco" starting point of your travels will be "Vancouver". Software 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 copyright text screen press on first controller or second controller Up + Left + A + B + Select once then Down + Right + A + B + Start, "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:
ROGERTHE RABBIT ANDEDDIE-Extra 6 lives.
Before entering last symbol of a password by pressing A button, hold Right + Select.

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 buttons both on first and second controllers then press Reset. When title menu appears, press A + B + Start on first controller.

Xevious

All versions:

(UNI) Hidden credits:
There is hidden credits message inside the ROM:
  MAIN: KEI CROSS
 SOUND: UHOHOY OHNOGI
ASSIST: EVEZOO END & HAL UDAGAWA
TESTER: SHIDASHI YAMAMO
    

Japan version:

(UNI) Debug mode:
At the title screen on the second controller hold A or B buttons 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 the second controller 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:
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

Xiao Au Jiang Wu

(UNI) Easter egg:
Start new game, after starting talks is over, stand on stage with table and press slowly Up, Up, Down, Down, Left, Left, Right, Right, A. Note: while pressing your character may leave stage area and then code cannot be entered, so stand above or lef or right of table so if you move in any direction you can not leave this area. Chinese message will appears.

Xiao Ma Li

(UNI) Extra 5000 credits:
Press Up and Select then Start at the title screen.

(UNI) Ending sequence:
Press Up and A and B and Select then Start at the title screen (you can press these buttons in any order before Start).

Youkai Douchuuki

Japan version:

(UNI) Test mode:
Hold Up + A + B on second controller and press Reset.

(UNI) Easter Egg:
Hold Select on first controller and press Reset. 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 Kurabu

(UNI) Warp to Level 2:
Press Up, Up, A, Right on stage view screen.

(UNI) Warp to Level 3:
Press Up, Left, B, Up on stage view screen.

Zoids Mokushiroku

(UNI) Secret passwords:
Note: nigori or panigori symbols need to be entered separately from main kana symbol, 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 timer:
Game contains additional "counter" games. You can challenge with other people for fastest reaction or pressing speed. Or just use feature as countdown timer or stopwatch. For enabling these features, power down console, hold A + B + Start buttons on first controller and one of buttons described below to enable various counter modes and then power up system again. After resetting, console will always return to the selected counter mode. To start timer press A, to set up timer press Up or Down before pressing A, each pressing increases or decreases 5 seconds to initial timer value.
Up-Countr
Down-Game Clock
Left-Stopwatch
Right-Timer

Zunou Senkan Galg

(UNI) Invulnerability:
Press A, A, Down, Left, Right, Right, Right, B, Up, Up, Up, Up at the title screen, then press Start. A sound will confirm correct code entry.

 

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