Mostly Unpublished NES Cheats ;)

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

  Coolboy 198-in-1, Coolboy 400-in-1
  Cadillac
  California Games
  Capcom Barcelona '92, Gold Medal Challenge '92
  Captain America and The Avengers
  Captain Ed
  Captain Planet and The Planeteers
  Captain Saver, Power Blade 2
  Captain Skyhawk
  Captain Tsubasa, Tecmo Cup - Soccer Game, Tecmo Cup - Football Game
  Captain Tsubasa Vol. II - Super Striker
  Castelian, Kyoro Chan Land
  Castle Excellent, Castlequest
  Castle Quest
  Castle of Deceit
  Castle of Dragon, Dragon Unit
  Castlevania II - Simon's Quest
  Caveman Ninja, Joe & Mac
  Challenge of the Dragon (Color Dreams)
  Challenger
  Championship Bowling
  Championship Pool
  Chaos World
  Chess Academys
  Chessmaster, The
  Chester Field - Ankoku Shin heno Chousen
  Chiki Chiki Machine Mou Race, Wacky Races
  Chiller
  Chinese Odyssey, A, Da Hua Xi You
  Chip's Challenge (Prototype)
  Chitei Senkuu Vazorudaa, Wurm
  Chou Hen, Galactic Crusader, Papillion
  Choujin Sentai - Jetman
  Chu Da D
  Chu Han Zheng Ba - The War Between Chu & Han
  Chubby Cherub, Obake no Q Tarou - Wanwan Panic
  Chuugoku Janshi Story - Tonpuu
  Chuugoku Senseijutsu
  Chuuka Taisen
  Circus Caper
  City Adventure Touch - Mystery of Triangle
  Clash at Demonhead, Dengeki - Big Bang!
  Cliffhanger
  Clu Clu Land
  Columbus - Ougon no Yoake
  Commando, Senjou no Ookami
  Conflict
  Conquest of the Crystal Palace, Matendouji
  Contra, Probotector, Contra 1993, Super Contra II
  Cool World
  Corvette ZR-1 Challenge, Race America
  Cosmic Epsilon
  Cosmic Wars
  Cosmo Police Galivan
  Cosmos Cop
  Crackout
  Creatom
  Crisis Force
  Cross Fire
  Crystal Mines
  Crystalis, God Slayer - Haruka Tenkuu no Sonata
  Cyberball
  Cycle Race - Road Man
  CAI Gakusyu System, QTAi Hardware

Cheats summary:
generic cheats-26
unique cheats-78
buried secrets-33
fixed generic cheats-12
unverified games-1
games with secrets-64
games with no secrets found-44

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

Newer revisions type 1:

(UNI) Self-test (added 09.07.15):
Hold A + B and press Reset to enter the ROM/RAM self-test. Thire is no this test in older revisions, but in newer ones (type 2) it has replaced with other cheats too, while the test code still sitting in their ROMs.

Newer revisions type 2:

(UNI) Hidden games (added 09.07.15):
Hold one of the following combinations and press Reset to start instantly a specific game hidden inside the ROM:
A + Select-Undersea Arena
B + Select-Astyanax
Select + Start-Dr.Mario

Cadillac

(UNI) Pre-defined card stack (added 15.07.13):
Enter the "Game Level Set" menu option, on controller 2 hold B, then press Up, Right, Right. The screen color will change from green to pink. Now start a new game, at the card shuffling screen, quickly press A on controller 2 before the cards start shuffling.

California Games

(UNI) Easter egg (added 26.02.14):
For any player, enter name as "PAUL" or "RACHEL". During "SKATE" competition, when this player is active, just before the end of the route, the flashing writing "PP & RME" will appeat on the ground. Initials stands for Paup Proctor and Rachel M. Edwards.

(BUR) Hidden text (added 26.02.14):
The RESET routine in the US version of this game uses string
PAUL & RACHEL
while the European version uses
HAS BEEN RAN
to determine was game hard or soft reset. As well as the whole file filled with a short copyright string for the US version
(C) COPYRIGHT 1987 RARE LTD. ENGLAND.
and for the European version
(C) COPYRIGHT 1990 RARE LTD.


Capcom Barcelona '92, Gold Medal Challenge '92

(BUR) Hidden text (added 11.07.09):
This game uses string
make software
to check save SRAM consistency and reset if it is not initialized.

Captain America and The Avengers

European version:

(BUR) Hidden text (added 15.01.09):
There is some hidden copyright text inside the European version ROM:
Program By
Hisatada,Ohta. &
Shuji,Ishimaki.
 Wed Aug 28,1991


Captain Ed

(UNI) Invulnerability (added 27.06.08):
During BOSS fight in no-flight game mode, pause the game then press on controller 1 Up + A + B + Select. After the game is unpaused you will be invulnerable.

(FIX) Flight stage skip (added 20.12.13):
During the flight stages, press Select to enter the items screen, then hold Up + A + B and press Select. If done right, you'll warp to the boss of the current level.

(UNI) Secret passwords (added 27.06.08):
こひあ-Invulnerability for all game modes.

(UNI) Secret names (added 27.06.08):
Enter as player name:
きんた-The BOSS rush mode.

Captain Planet and The Planeteers

(GEN) Secret passwords:
506210-Ending sequence, unlockable after beating the game.

Captain Saver, Power Blade 2

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

(BUR) Hidden text (added 19.01.09):
There is a hidden message inside the game ROMs:
TOSHIKAZU IWASA


Captain Skyhawk

(GEN) Invulnerability:
Press Up, Right, Down, Left, Up at the copyright screen, background will flash.

(FIX) Nine lives, all weapons:
At the title screen, press Start and wait until the second title screen appears. Hold Down + A and wait for the next screen.

(FIX) Level skip:
Press Up + B on controller 2 during the game.

(UNI) Star speed (added 28.02.14):
During docking sequence after the dog-fight levels, press A or B on controller 2 to accordingly decrease or increase speed of the background stars. Normally the game automatically set this speed at maximum only on the final boss fight.

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

(UNI) Password generator:
Bits:










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


Captain Tsubasa Vol. II - Super Striker

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

(FIX) Secret cutscenes (added 09.03.17):
There are 4 additional secret cutscenes exists. To see any of them, at some points when the regular cutscenes awaits for the A button to skip to the next screen, press Down + B instead. Here is the full list of places, where you can access the secret cutscenes and its short descriptions.
Where|Description
Very first Intro cutscene, the first Tsubasa's line.|Displays the additional cutscene between the first and the second parts of the Intro.
After Sao Paulo vs. Flamengo match, last line of commentator's dialogue.|Mighty Bomb Jack will celebrate the victory of Sao Paulo.
After Nankatsu vs. Toho match, last line of commentator's dialogue.|Mighty Bomb Jack will celebrate the victory of Nankatsu.
After Japan Vs. West Germany match, last line of commentator's dialogue.|A short cutscene where Tsubasa has a conversation with Schneider.

(BUR) GameGenie (added 28.07.13):
OZOAYPXX+OZOETPEX-Re-enables the stage select mode, after an initial game briefing.

(UNI) Password generator (added 08.03.17):
Some notes:
1. There are 34 valid rounds in this game, but the password system allows up to 64 rounds, so all rounds between 35 and 66 will obviously glitch the game or hang it. You can try it by setting the corresponding checkbox.
2. The Jun Misugi's guts test starts from round 17. If its guts drops under 100 after the round is over (no matter if you win or loose) then in the next round it will have zero guts. This behaviour can be stored in the password as well.
3. There are much more characters in this game in 3 different teams than the password system can store. So, one player position in the password used to store level for a multiple characters, for three teams at once. Here is the table with the lists of characters in all teams for every player slot in password.
Player slot|Sao Paulo Team|Nankatsu Team|Japan Team
1|つばさ (Tsubasa)|うらべ (Urabe)|つばさ (Tsubasa)
2|レナート (Renato|なかやま (Nakayama), きしだ (Kishida)|たかすぎ (Takasugi), いざわ (Izawa), たき (Taki), きすぎ (Kisugi), もりさき (Morisaki)
3|リマ (Lima), マリーニ (Marini)|もりさき (Morisaki)|みさき (Misaki)
4|アマラウ (Amaral)|たかすぎ (Takasugi)|いしざき (Ishizaki)
5|ドトール (Doutor)|みさき (Misaki)|にった (Nitta), かずお (Kazuo), まさお (Masao), じとう (Jito), みすぎ (Misugi)
6|バチスタ (Batista)|いざわ (Izawa)|そうだ (Soda), さの (Sano), さわだ (Sawada), そりまち (Sorimachi)
7|タハマタ (Tahamata)|たき (Taki)|ひゅうが (Hyuga)
8|バビントン (Babinton)|いしざき (Ishizaki)|まつやま (Matsuyama)
9|ジウ (Gil)|にった (Nitta)|わかばやし (Wakabayashi)
10|プラトン (Plato)|きすぎ (Kisugi)|わかしまづ (Wakashimazu)

Random:
Round:Allow unsupported rounds
LevelsCurrent Exp
Slot 1:Unlock Cyclone Shoot
Unlock Drive Overhead Shoot
Misugi guts lower than 100
Password:

Thanks to Gennadiy_Master for info.

Castelian, Kyoro Chan Land

(UNI) Secret message (added 28.02.14):
At the game over screen, hold Up + A + Select, wait until the title screen is displaing, instead you'll see a secret message: "COPYRIGHT TRIFFIX 1991".

(BUR) GameGenie (added 26.06.08):
SAOKUPSZ (for the US version)
SAXKUZSZ (for the Japanese version)
-Enables Invulnerability cheat. Press Down + Left + A + B any time in game to become invulnerable. After entering new level you need to use cheat again.
SAOKSPSZ (for the US version)
SAXKSZSZ (for the Japanese version)
-Use this code to enable level skip feature by pressing the same buttons as for previous cheat. If you use this GG code alone, this will cause death instead of level skip.

Castle Excellent, Castlequest

(GEN) Sub command:
During the game press A or B on controller 2.

Castle Quest

(UNI) Secret names (added 01.03.14):
Enter one of these words as a player name in any game mode.
たろっと-Tarot - Tarot cards viewer
でも-Demo - Demo sequence viewer
くみんしーど-Kumin Seed - Ending sequence
もりきゅう-Wood 9 - Special round
よこがお-Profile - Character viewer
さしえ-Illustration - Picture viewer
とらんぷ-Playing cards - Playing cards viewer
もにたー-Monitor - Debug monitor
おおくほななこ-Ookubo Nanako - Easter representing the Ookubo's newborn daughter with some speech
なかしままさと-Nakasima Masato - Easter with small one-eyed character, walking through the screen and shouting "ま!" ("MA!")

(BUR) Hidden text (added 05.11.08):
There is some hidden copyright text in ROM file:
COPYRIGHT 1990 OPR RYOUICHI OHKUBO


Castle of Deceit

(UNI) Level skip and invulnerability (added 15.07.13):
Any time during the game, except the title screen, hold Up on controller 2 and Up + A on controller 1 at the same time then press B on controller 1 to enable the level skip and invulnerability cheat. Now hold B and press Select on controller 1 to skip current level, hold A and press Select to enable invulnerability.

(UNI) Unlimited continues (added 15.07.13):
After the game over screen, hold A then press Start to continue from the last level you've played. It works only three times. Hold additionally Down on any controller before pressing A + Start every time you get a the game over screen and your continue will be unlimited.

Castle of Dragon, Dragon Unit

(UNI) Easter egg (added 01.03.14):
While walking through the corridor to the princess after beating the last boss of the game (the Red Dragon), hold Up + Left + A + B + Select + Start on controller 1. The princess, surprisingly, meets you topless. You can't see the topless princess in the Sprite Viewer of the Test Menu, though.

(UNI) Test mode (added 29.12.08):
At the title screen, press A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left, A, A, Left, Left. Test menu will appear. You will be able to select some game options, listen to music, view sprites and backgrounds. You can enter the game in test mode but cannot complete any level. To return back to the normal game, select "EXIT" option.

(BUR) Hidden text (added 29.12.08):
The RESET routine in this game uses string
GIANTS
to check if game was soft or hard reset.

Castlevania II - Simon's Quest

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


Caveman Ninja, Joe & Mac

US version:

(UNI) Secret names (added 17.07.09):
Enter one of following words as player name for the hi-score table:
BUNNYEAST-Player name will change to "EXCELLENT", from now in game you will have infinite lives and can skip current level by pressing Select on controller 1.
DATABUNNY-Player name will change to "YO DUDES", from now in game you will have infinite lives. If you appears to enter hi-score table name again, any your name will be always "YO DUDES" after using this cheat.

European version:

(UNI) Secret names (added 17.07.09):
Enter as player name for the hi-score table:
NESRABBIT-Player name will change to "B BUNNY", from now in game you will have infinite lives. If you appears to enter hi-score table name again, any your name will be always "B BUNNY" after using that cheat.

Challenge of the Dragon (Color Dreams)

(UNI) Level skip (added 02.02.14):
Any time during the game, hold Up on controller 2 and Up + A on controller 1 at the same time then press B on controller 1 to enable the level skip cheat. Now hold B and press Select on controller 1 to skip current level.

Challenger

(GEN) Love story:
When in SCENE 2 press on controller 1 A, B, A, A, B, B, A, A, A, B, A, A, B, B, B, B, A, B, A, B, A, B, B, A, A, B, A, A, A, B, A, B. You will see the message "KIKU MEGU LOVE STORY!" immediately. Note: if you write code sequence as 0 and 1 string "0100 1100 0100 1111 0101 0110 0100 0101" it will give you "4C 4F 56 45" hex string, in ASCII this mean "LOVE". Another interesting thing, that is the same message appears in "Binary Land" game for Famicom by HUDSON. "KIKU" is a programmer of HUDSON Kikuta Masaaki (菊田昌昭). He put secret codes with messages almost in all his games under HUDSON label.

(BUR) Hidden text (added 09.12.08):
The RESET routine in this game uses string
KIKU
to check if game was soft or hard reset.

Championship Bowling

(BUR) Hidden text (added 23.11.08):
There is a hidden copyright text in ROM:
1989ANOTHERltd.
1989 Another Ltd.
Another Ltd. 1989/2/27 New バージョン


Championship Pool

(GEN) Secret warp (added 24.08.16):
To skip the Regional Qualify and warp directly to the World Chapmionship, score 140 or lower seconds at the first round of the Speed Pool Challenge game, then start the Tournament. This cheat is unlockable and will be given to you when you complete the Regional Qualify.
Source: gamefaqs.com

(BUR) GameGenie:
VYUTKKXG+EZUVEGXZ-Access to unused or maybe unfinished "cheat" menu. Only the resources for the display are present, there is no code to call it properly and do anything.

Chaos World

(BUR) GameGenie:
ZAKPOLGA-Code enables in-game debug screen instead the quick info screen popping up when the player is standing up.

Chess Academys

(UNI) Cheat mode (added 07.04.10):
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.

Chessmaster, The

(BUR) Hidden text (added 19.01.09):
There is hidden version text inside ROM:
The ChessmasterVersion 1.3


Chester Field - Ankoku Shin heno Chousen

Final version:

(GEN) Invincibility:
During the game press Select to enter the game menu, press A + B on controller 2 to enable cheat input, now press A, Right, Left, Up, Right, Left, Down, Up, Right, Down.

(GEN) Suicide:
During the game, press Down + A + B on controller 2.

Beta version:

(UNI) Debug mode (added 20.12.13):
Any time during the game, press A + B on controller 2 to enable the debug mode. The game will hang and waiting for the commands, which changes some parameters in game.
Press Up or Down on controller 2 to enable or disable invincibility.
Press Up on controller 1 to enable the Mornig Star weapon.
Press Select on controller 1 to enable the Stage Select mode. A small number appears at the center of the screen. Press Left or Right on controller 1 to change it. Press Start to start with desired level.
Press A + B to continue the normal game with changed parameters.

(BUR) Hidden text (added 17.01.09):
There is a hidden copyright text in the Beta version ROM:
CHESTER FIELD SOUND DATA Ver 1.02 MUSIC COMPOSED & S.E. CREATED BY M.SAITOH(T.S.T) COPYRIGHT (C) 1987 VIC TOHKAI/TECMO.LTD
There is no such string in final release.

Chiki Chiki Machine Mou Race, Wacky Races

All versions:

(FIX) Only Bosses:
At the title screen, after the "PUSH START BUTTON" message appears, press A, B, Right, Left, Right, Left, Down, Down, Up. This cheat also enables debug mode. To use it, pause the game, hold Select and press Right to select weapon, or press Up to restore hearts. Or hold A + B then unpause the game to skip to the next boss.

US version:

(UNI) Double Jump (added 17.03.11):
Press Up, A, B, Right, Down, Left while in pause. From now you can perform double jump by pressing jump button twice.

Chiller

HES version:

(BUR) Hidden text (added 17.01.09):
There was some additional strings at the title screen before final release, but seems was removed from code. Only strings left:
BY CHRISTOPHER ERHARDT


AGCI version:

(UNI) CRC test (added 06.10.08):
Hold Up + A + Select, then press Reset. Messages "NTSC PAL VERSION 21 SEPT 1990, NTSC MODE, PRG CHECKSUM 1681, MODS BY SCOTT SCHRYVER" will appear.

Chinese Odyssey, A, Da Hua Xi You

(UNI) Easter egg (added 16.07.13):
During the game, enter the menu by pressing Select then press Left + Select + Start on controller 1. A "MARS" logo will appear at the top-left corner of the screen.

Chip's Challenge (Prototype)

(GEN) Level selecl:
At the start of the level, before pressing any button, press A or B on controller 1 to skip to the next or the previous levels accordingly.

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

Chitei Senkuu Vazorudaa, Wurm

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

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

(BUR) Hidden text (added 19.01.09):
There is disabled option in final release "VISUAL DEMO". Only text left. There is no any code in ROM.

Chou Hen, Galactic Crusader, Papillion

All versions:

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

Kinema Music version:

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

Choujin Sentai - Jetman

(GEN) Extra difficulty settings:
Hold A + B then press Start at the opening screen to unlock the hard and very hard difficulty modes. This is unlockable cheat, you can obtain it if beat the game once.

(GEN) Soft reset:
During the game press A + B + Select + Start once.
Source: ReyVGM

Chu Da D

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

Chu Han Zheng Ba - The War Between Chu & Han

(BUR) GameGenie (added 03.03.14):
XVNTAIAV-Displays the game variables and timers during the game play.

Chubby Cherub, Obake no Q Tarou - Wanwan Panic

Japanese version:

(UNI) Infinite lives (added 03.03.14):
To enable this cheat you must plug in the 4-Player adapter for Famicom (4-Score adapter for the NES isn't compatible), then at the title screen press Up + Down + Left + Right + A on controller 1. Start a new game, if done right, the Q-Tarou character picture on the stage info screen will change from standing to walking.

Chuugoku Janshi Story - Tonpuu

(UNI) Version display (added 03.03.14):
At the title screen, press Left, Left, Left, Left, Left, Left, B. The current known dump version is 1.05.

(GEN) Music test:
At the title screen, press Left, Left, Left, Right, Right, Right, Start.
Source: ReyVGM

(UNI) Voice test (added 03.03.14):
At the title screen, press Left, Left, Left, Right, Right, Right, Right, Right, Right, Right, Right, Start.

(FIX) Stage select:
At the title screen, press Down or Select 8 times, then press Start.
Source: ReyVGM

(FIX) Continue:
After the game over screen, at the title screen, press B + Start to begin where you left off.
Source: ReyVGM

(FIX) Tile select:
While playing the game, instead of pressing A to reveal the Mahjong title, press Up 5 times then Down. Press Up or Down to select any tile you want.
Source: ReyVGM

Chuugoku Senseijutsu

(GEN) Auto fill names list:
While on the Name List menu, hold Left and press B on the number 1 and number 6 to automatically fill the names list.
Source: ReyVGM

(UNI) Sound test (added 17.01.09):
At the title screen, press Select 5 times then hold Up and press B. A "SOUND REQEST" screen will appear.

(UNI) Hidden gambling game (added 04.03.14):
During the game, when at the Slot Machine Oracle, run the machine, when all the rows are stopped, hold Up and press A a couple of time to skip the messages. After the last message is skipped, the Slot Machine Oracle will turn to the Gambling Machine. You'll have some credits and can place the bets and win some money. Hold Up and press B to return to the main game with money won.

Chuuka Taisen

(UNI) Cheat menu (added 11.06.12):
At the title screen, hold Up + Left + B on controller 1, then press Start. A sound will confirm correct code entry. Now release previously pressed buttons and enter button code Select, B, Left. A cheat menu will appear. You can select difficult level, number of player lives and toggle power selection mode. When power selection is "ON", during the game press Start to pause, then cycle through 6 power levels by pressing B on controller 1.

(UNI) Auto fire (added 04.03.14):
Start a new game, at the "READY!" screen press Down + B once. A sound will confirm correct code entry. Now you can hold A or B to fire automaticly. This cheat will be disabled after the game over screen.

Circus Caper

(BUR) GameGenie (added 16.07.12):
AANNNNNY-Enables some simple debug functionality. During the game press Start to skip to the next stage. Press A before starting a new game to enable invincibility. Press B before starting a new game to jump to the ending screen.

City Adventure Touch - Mystery of Triangle

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

Clash at Demonhead, Dengeki - Big Bang!

All versions:

(UNI) Instant death (added 14.02.13):
During the game, press Select to enter to the item select screen, press A + B at controller 2.

Japanese version:

(UNI) Secret passwords (added 07.04.08):
TENSAIWAWASURETA
KOTOWOOMOIDASUYO
-Full HP/MP and equipment.

US version:

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

Cliffhanger

(BUR) Hidden text (added 16.07.13):
There is a hidden copyright message inside ROM:
COPYRIGHT SPIDERSOFT 1993


Clu Clu Land

(BUR) Hidden text (added 26.11.08):
There is a hidden copyright message inside ROM:
T.SAWANO


Columbus - Ougon no Yoake

(UNI) Skip fight (added 18.07.13):
Select the "Load Game" option from the main menu, hold Up + B on controller 2 and B + Select on controller 1 at the same time, then press A on controller 1 to enter the selected option. Do not load any games, press B to return back to the title screen and start a new game. From now, you can finish any battle just by pressing Start on controller 1. This cheat will be saved also to your save slot and you won't need to enter it again, just load a previously saved game.

Commando, Senjou no Ookami

All versions:

(FIX) Secret passages (added 06.10.08):
At the title screen, press Left, Left, Left, B, B, A, A, A, A on controller 2 then start a new game. From now you will see underground passages on level.

(FIX) Level select (added 06.10.08):
At the title screen, press Left, Right, A, B, A, Down, Up on controller 2 then hold A on controller 1 and by pressing Select selects the desired level.

(UNI) Secret message (added 07.10.08):
Finish the last level 4-4 with exactly 3 lives and 24 grenades and you will see secret message "ARIGATOU GOZAIMASHITA, 31ST JULY 1986 CAPCOM" .

(BUR) Hidden text (added 07.10.08):
There is a hidden text in the ROM file:
SOFT:M.K SCROOL:KURA PLANNER:KURO SOUND:SAKA MUSIC:TAMA


US version:

(BUR) GameGenie (added 06.10.08):
PEKGKSYA-Enables "Timer Adjust" cheat. At the title screen, press A, Left, Left, Left, Up, B, Up, A, Right, Right, Right on controller 2. During the game press A + B on controller 2 to speed up the game timers.
AEUGXSNA-Enables "Invulnerability" cheat. After the game over screen and, when return to the title screen, press Down, A, A, Right, B, B, Up, Up, A, Left, Left, B, Down on controller 2, then select "1P CONT" or "2P CONT" menu options, hold A + B on controller 1 and press Start.

(BUR) Disabled cheats:
There is a lot more cheats was in game at the development stage and previously in the Japanese version. Cheat B, Down, Up, A, Left, Left, Right at the title screen is checked and triggered but there is no code that uses it's cheat flag in the whole ROM, it was the Frame Advance cheat in the Japanese version. Another cheat Left, B, B, Right, A, Up disabled by setting some wrong data in code sequence, so it cannot be verified correctly, but there is no any code that uses according cheat flag too. Two more disabled but still working cheats mentioned in "GameGenie" section. Another cheat sequence present in the ROM but not checked by any part of the code is Left, Left, Up, B, Up, A, Right, Right, Right.

(BUR) Hidden text (added 07.10.08):
There is a hidden text in the ROM file:
NO.16 TAKAI MAMIKO KAISYA NO HIKKOSHI DE 86/7/6 AKUSYUKAI NI IKENAKKATTA NOGA KUYASII MAMIKO FAN YORI
which means "It was not possible to go to the handshake party of Mamico done to 1986/7/6. For the move of my company. From Mamiko fan". Takai Mamiko is a singer in Japan. It is an old star. "Handshake party" is a party from which it shakes hands with the celebrity. And one more
THIS GAME OF KEYWORD IS 3/24... ITS MY BIRTHDAY.
IF 4-4 ROUND PLAY 3=PLAYER 24=HAND BOMB THEN YOU WILL BE CLEAR THIS GAME.
MY NEXT MAKE GAME IS -CAPTAIN HIGEMARU- PLEASE PLAY IT. YOU KNOW ??
86/9/10FOR USA VERSION

Source: Pongbashi

Japanese version:

(UNI) Frame advance (added 07.10.08):
At the title screen, press B, Down, Up, A, Left, Left, Right on controller 2. In game press or hold Select to stop or move frame by frame enemies. In the US version this cheat was disabled.

(BUR) GameGenie (added 06.10.08):
PAEKXSYA-Enables "Timer Adjust" cheat. At the title screen, press A, Left, Left, Left, Up, B, Up, A, Right, Right, Right on controller 2. During the game press A + B on controller 2 to speed up the game timers.
AENKEKNA-Enables "Invulnerability" cheat. After the game over screen, when return to the title screen, press Down, A, A, Right, B, B, Up, Up, A, Left, Left, B, Down on controller 2, then select "1P CONT" or "2P CONT" menu options, hold A + B on controller 1 and press Start.

(BUR) Hidden text (added 07.10.08):
There is a hidden text in the ROM file:
86/8/6 FOR JPN VERSION


Conflict

(BUR) GameGenie (added 18.07.13):
AENSSYPA-"Sorry Version for Promotion..." message if you select levels from 8 to 16 to play.

Conquest of the Crystal Palace, Matendouji

All versions:

(GEN) Sound test:
At the title screen, hold A + B + Select for a while. Use the D-Pad to select a song and press A to play the current selection.

(GEN) Cheat mode:
At the title screen, hold B + Select for a while, release the buttons then press A + Select a couple of times (not holding it), until a sound will confirm correct code entry. Actually, you just need to press both combination once, but program skip the code test every 8 frames, so you can just miss if press exactly at that time. Begin game play, hold Select and enter one of the following codes to activate the corresponding cheat function.
Right-Temporary invulnerability
Left-Extra gold
Up-Jumping Shoes
Down-Full life
Up + Right-Extra lives (up to 99)
Down + Left-Power-up weapon
Up + Left-Moon Mirror
Down + Right-Zap energy

Japanese version:

(GEN) Extra credits:
At the title screen, hold B + Select for a while, then press A + B to increase starting credits number.
Source: ReyVGM

Contra, Probotector, Contra 1993, Super Contra II

All versions:

(GEN) Extra 30 lives:
At the title screen, before demonstration begins, press Up, Up, Down, Down, Left, Right, Left, Right, B, A. The buttons Start and Select not counting when entering cheat, so you can press it any time, but after pressing Start game begins and entered button sequence is checked.

Japanese version:

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

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

(GEN) Secret message (added 05.03.14):
After beating the game, just before the staff roll, on the island explosion animation, hold Select + Start on controller 1 and keep holding it before the game should return back to the map and start a game from the beginning. Instead of map, you'll see a secret message about "Red Falcon".

Pirate version:

(UNI) Konami code (added 05.03.14):
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A. Instead of 5 starting lives, you'll obtain just 2.
Source: Yakovlev Victor

(UNI) Stage select (added 05.03.14):
At the title screen, press Select, Left, Right, B, A.
Source: Yakovlev Victor

(UNI) Extra 11 lives (added 05.03.14):
At the title screen, press Up, Down, B, A, then start a new game.
Source: Yakovlev Victor

(UNI) Extra 30 lives (added 05.03.14):
At the title screen, press Up, B, Up, A, Up, Up, B, A, then start a new game.
Source: Yakovlev Victor

Cool World

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

(BUR) Hidden text (added 13.11.08):
Most of the games programmed by Ocean shares the same music driver library all along with the hidden version and copyright string:
MUSIC DRIVER V1.0 (C)JONATHAN DUNN & OCEAN SOFTWARE


Corvette ZR-1 Challenge, Race America

All versions:

(UNI) Racers info skip (added 18.07.13):
At the racer's name entry screen, press B + Select to jump right to the race info screen, instead of watching the racer's presentation.

(UNI) Higher speed and accelerate (added 18.07.13):
At the initial copyright screen, press every single button at the same time on any controllers to make a combination of Up + Down + Left + Right + A + B + Select + Start in total. You can press the opposite D-Pad directions on the different pads. For example press Up + Right + A + B + Select + Start on controller 1 and Down + Left on controller 2. A sound will confirm correct code entry. Instead of 192 mph, you'll reach the 201 mph and the faster acceleration.

(UNI) Secret names (added 04.05.14):
Enter one of the following words as a Player 1 name in the single player mode to change the name of your opponent to the secret one, mentioning developer's name, his relatives and Jesus itself.
PROTECTOR-Player 2 name will be "ALEX DEMEO"
VICTORIOUS-Player 2 name will be "VICKY DEMEO"
IN GODS IMAGE-Player 2 name will be "TIFFANY DEMEO"
FOLLOW CHRIST-Player 2 name will be "CHRISTOPER D"
LITTLE LAMB-Player 2 name will be "RACHEL DEMEO"
GREATEST TRUTH-Player 2 name will be "JESUS IS LORD"

European version:

(UNI) Scene skip (added 07.03.14):
In the European version an ability were added to skip more info and animation screens, not really needed for the game. Just press A + B at the the title screen, next few screens, after a rave start, etc.

Cosmic Epsilon

(GEN) Continue:
At the game over screen, hold Select and press Start. Then, press Start at the title screen.

(GEN) Secret message:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A. Message "I AM NOT KONANI" will appear. Similar code used in most of Konami games and accordingly called "Konami code" sometimes. If you try to enter is in "Cosmic Epsilon", then you will be informed about wrong game developer. ;)

(GEN) Level select:
At the title screen, press A, B, Right, Left, Right, Left, Down, Down, Up, Up after the introduction sequence ends and the logo appears. This is exactly "Konami code" backwards. ;)

(GEN) Another world mode:
At the title screen, press Up, Down, Left, Right, A, Down, Up, Left, Right, B after the introduction sequence ends and the logo appears. The phrase "Another World!" will appear at the bottom of the screen to confirm correct code entry. The game is more difficult in this mode. This chieat is unlockable when beating the game once, after the final staff roll, just wait for it at the Asmik logo.

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

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

(UNI) Easter egg (added 08.03.14):
After beating the game, before the Staff names is displaing, hold Select on controller 1. A small pictures, represents the staff members will appear at the top-left corner of the screen for every name.

(BUR) Secret message:
In addition to "I AM NOT KONANI" code game contain another text string "I AM NOT NANCO", which should be triggered by some key combination code like it Namco mostly likes.

Cosmic Wars

(UNI) Ending sequence (added 18.07.13):
At the title screen, hold Up + Right + A + B + Select then press Start on controller 1.

(UNI) Extra 20 of every unit (added 18.07.13):
At the game mode selection screen, hold Down + B + Select, then press Start on controller 1, then start a new game. You and your opponent will obtain 20 pieces of every unit for free from start.

(UNI) Skip Animation Between Turns (added 18.07.13):
During the game, hold Up + Right + A + B on controller 1 after the current round ends, but before the next one is started.

Cosmo Police Galivan

(BUR) Hidden text (added 19.07.13):
SRAM initialization routine in this game uses the string
HIROMU.YAMAMOTO
as valid data header.

(BUR) GameGenie (added 08.03.14):
GEOZUTVA-Re-enables the Pause cheat. During the game press A on controller 2.

Cosmos Cop

(UNI) Extra lives (added 08.03.14):
During the game, pause the game then press Up + B + Select to increase the lives counter.

(UNI) Extra weapon (added 08.03.14):
During the game, pause the game then press Down + A + Select to increase the weapon counter.

Crackout

(GEN) Secret names:
Enter into the computer at the end of the game:
MERRY CHRISTMAS-Ending of the game

Creatom

(UNI) Instant unlock (added 08.03.14):
During the "Unlock you universe" level, press Left + B + Select, then Right + A + Start and finally A + B + Start to instatnly complete the level.

(UNI) Instant game over (added 08.03.14):
During the game, press Up + A + Start to instantly over the current game.

(UNI) GL counter (added 08.03.14):
During the game, press Start to pause it, then press Left + B + Select, after that press Right + A + Select, then hold Up + Select and press A or B to increase or decrease the "GL" cointer.

(BUR) GameGenie (added 08.03.14):
XVUAOTAV-Re-enables the debug variables display, while increasing/decreasing the GL counter values.
XTEPKYAV-More debug display when unlocking.
GEXAZSGK+GESAASGK-More debug display during the "Unlocking" mode.

Crisis Force

(GEN) Extra 15 Ships:
At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start.

Cross Fire

(UNI) Level select (added 13.01.09):
At the title screen, press Select, Select, A, B, B, Select, B, Select, A then press Start.
Source: Yakovlev Victor

(UNI) Invulnerability (added 13.01.09):
At the title screen, press B, B, B, A, B, Select, Select, B, A, A, Select then press Start.
Source: Yakovlev Victor

(UNI) Invulnerability and Level select (added 13.01.09):
At the title screen, press Select, B, Select, B, A, B, B, A, B, B, Select, Select then press Start.
Source: Yakovlev Victor

Crystal Mines

(GEN) Level select:
At the stage number screen, press A or B to increase or decrease starting level number by 5, up to 81.

(GEN) Suicide:
During the game, press Select + Start to commit suicide.

(UNI) Stage select and Extra lives (added 09.03.14):
At the title screen, you must hold some buttons on controller 1 and press Select, when the right combination of pressings is done, the cheat will be enabled. There is a various ways to enable this cheat, for example you can hold Right, press Select twice, release Right, press Select twice, hold Right, press Select twice, release Right, press Select, hold Right, press Select, release Right, press Select three times. Or you can just hold Up + A + B, press Select, release the buttons, hold Up + Left, press Select, release all buttons, press Select twice. A sound will confirm correct code entry and the title menu corsor will reset to 1 Player option. Now, at the stage number screen, press A or B to increase or decrease the level number by 1, instead of 5 and this allows you to select stages up to 100, instead of 81. Press Start to increase the lives. Press Select to enable the far range robot weapon, instead of generic one. Additionally, if you increase the stage number above 100, the stage counter will be reset to 1, but now all levels will be more difficult, due to faster enemy and obstacles movement. This mode can be reached normally, when you beat more than 255 stages. This all is works for both, the first and the second players.

Crystalis, God Slayer - Haruka Tenkuu no Sonata

All versions:

(UNI) Game pause (added 08.01.08):
For pause the game press B on controller 2.

(FIX) Level warp:
During the game hold A + B on controller 1 then by pressing A on controller 2 you can cycle through 16 predefined places of the game.

Japanese version:

(UNI) Cheat mode (added 09.03.14):
Hold A + B on controller 1, then power off and on again the console, this doesn't work if you just reset it. Now, during the game, enter the status screen, then press on controller 2 either A to enable super fast movement mode or press any D-Pad button to enable the invulnerability and add all items and equipment and 255 MP.

(UNI) Secret messages (added 27.08.22):
Enable "Cheat mode" as mentioned above, then just beat the game. Do not power off the console, start a new game or continue previously player one. Now, if you start any conversation in town with any character with A held on controller 1, one of four secret messages from the developers will be displayed.
Source: Garrett Greenwalt

US version:

(BUR) GameGenie (added 09.03.14):
XTKLVYAV-Re-enables the cheat mode from the Japanese version. For the usage see the cheat above.

Cyberball

(UNI) Soft reset (added 10.03.14):
During the game press A + B + Select + Start on any controller.

Cycle Race - Road Man

(UNI) Bike replace (added 19.07.13):
During the game press Down + B on controller 1 to ask for bike replacement at any time.

(UNI) Stage select (added 19.07.13):
Hold A + B at controller 1 then press Reset. Now you could select any stage on the map to race.

CAI Gakusyu System, QTAi Hardware

(UNI) Password generator (added 31.08.19):
This is a cartridge lock code generator for a series based on the same QTAi hardware: "NHK Gakkuen - Space School - Sansu" years 4, 5 and 6 for both "Low" and "High" levels, also for "Idemitsu - Space College - Kikenbutsu no Yasashii Butsuri to Kagaku". Note, all zeroes not a valid code here.
Random:
Password:

Source: caitsith2@youtube

 

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