3DS

Centipede: InfestationCodes for characters and costumes05/30/12
Nikoli's Pencil PuzzleUnlock more Akari puzzles02/27/12
Nikoli's Pencil PuzzleUnlock more Shikaku puzzles02/27/12
Nikoli's Pencil PuzzleUnlock more Sudoku puzzles02/27/12

Acorn Archimedes

GuileLevel Codes04/06/10
HamstersPasswords04/06/10

Amiga

AstralLevel Select and Cheat Passwords10/24/11
AtomaniaPasswords10/24/11
Aventures de MoktarPasswords10/24/11
Back to the Future Part IICheat Mode03/26/08
Back to the Future Part IILevel Codes03/26/08
Back to the Future Part IISkip levels03/26/08
Bad Dudes vs. Dragon NinjaExtra Life04/21/08
Bad Dudes vs. Dragon NinjaLevel Skip and Infinite Lives04/21/08
BangbooLevel Passwords10/24/11
Behind The Iron GateIn-Game Cheat Codes04/21/08
Behind The Iron GateLevel Codes04/21/08
Brutal: Paws Of FuryInvincibility03/26/08
Bubba 'n' StixLevel Codes starting with 9 Lives04/21/08
Bubble and SqueakCheat Passwords04/21/08
Bubble GunLevel Passwords10/24/11
Builderland: The Story Of MelbaLevel Passwords10/24/11
Dalek AttackLevel Codes and Infinite Lives04/21/08
Devious DesignsPasswords04/21/08
Dogs of WarInfinite Lives04/21/08
DragonstonePasswords04/21/08
Dynamite DuxLevel Skip and Minigame04/21/08
E-MotionLevel Skip04/21/08
ExtaseAccess the Mystic Crisis Level04/21/08
Eye of HorusInfinite Lives and all keys04/21/08
FalconFull Power04/21/08
Impossible Mission 2025: The Special EditionPasswords02/03/10
Indiana Jones and the Last Crusade: The Action GameCheat Mode02/02/10
Indiana Jones and the Last Crusade: The Action GameInfinite Lives02/02/10
Killing CloudLevel Passwords06/11/12
Kiro's QuestHigh score cheats06/11/12
Kiro's QuestLevel Passwords06/11/12
Legend of the LostLevel Passwords06/11/12
LeonardoLevel Passwords06/11/12
Never MindLevel Passwords06/12/12
Never MindSkip Levels06/12/12
One Step BeyondLevel Codes03/27/08
Ooops UpLevel Passwords02/11/13
PowerCheat Mode02/11/13
PowerLevel Passwords02/11/13
PsyborgAnacreon Passwords02/11/13
PsyborgKalgan Passwords02/11/13
PsyborgKrypton Passwords02/11/13
PsyborgSol Passwords02/11/13
PsyborgTerminus Passwords02/11/13
PsyborgTrantor Passwords02/11/13
PsyborgZorgon Passwords02/11/13
TangramLevel Passwords10/13/08
ThunderbirdsPasswords01/25/10
Tiny SkweeksLevel Passwords10/13/08
Traps 'n' TreasuresPasswords01/25/10
Valhalla & The Fortress Of EvePasswords01/25/10
Vektor StormLevel Passwords10/13/08
Venom WingInfinite Lives01/25/10
VolfiedCheat Mode01/25/10
X-OutCheat Mode01/25/10
X-PloitPasswords01/25/10
Yogi Bear & Friends in the Greed MonsterInfinite Food01/25/10

Arcade Games

The King of Fighters '98: Ultimate MatchAlternate characters03/25/08

Atari 5200

Super BreakoutReset lives05/04/09

Atari ST

EpicPasswords04/05/10

DS

Sudoku DS: Nikoli no Sudoku KetteibanUnlockable Skill Challenge Puzzles05/09/09

GameGear

Daffy Duck in HollywoodInvincibility and Stage Skip08/28/12
Daffy Duck in HollywoodView Endings08/28/12

Genesis

Daffy Duck in HollywoodDebug Mode08/24/12

iOS (iPhone/iPad)

Ant WarsAchievements03/03/11
Aqua Slots ExtremeAchievements03/03/11

NEC PC88

Super Mario Bros. SpecialHidden Hudson Soft Self-Advertisement.03/27/12

Neo-Geo CD

The King of Fighters '97Hidden Characters12/06/05
The King of Fighters '98: The SlugfestAlternate characters03/13/08

PC

BaalUnlimited Lives05/04/09
BackTrackCheat Mode05/04/09
Battle IsleOne player password05/04/09
Battle IsleTwo player Passwords05/04/09
Battle Isle 2220: Shadow of the EmperorPasswords05/04/09

PlayStation

Finger FlashingRound Select05/23/13

PlayStation 2

The King of Fighters 2002 Unlimited MatchConsolation prize unlockables02/27/09
The King of Fighters 2002 Unlimited MatchHidden Characters02/26/09

PlayStation 3

Capcom Arcade CabinetSemi-infinite lives in Legendary Wings 1-player game.07/15/13
Devil May Cry 4Complete Ending02/04/08
Legends of WrestlemaniaUnlockable Match Types04/01/09
Persona 4 ArenaNew Character Story Modes08/07/12
Sonic's Ultimate Genesis CollectionUnlockable Extras02/13/09

Sega Master System

Cyborg ZSound Test01/30/13
Daffy Duck in HollywoodInvincibility and Stage Skip08/28/12
Daffy Duck in HollywoodView Endings08/28/12
Tensai BakabonEasy 50,000 yen02/07/13
Tensai BakabonHidden Japanese Word.02/07/13

Sharp X1

Super Mario Bros. SpecialHidden Hudson Soft Self-Advertisement.03/27/12

Wii

Gradius ReBirthAll 4 Options12/08/08
Sonic the Hedgehog 4: Episode IDifferent ending poses.10/21/10

Wii U

New Super Mario Bros. UFireworks at the end of the level11/19/12

Xbox 360

Persona 4 ArenaNew Character Story Modes08/07/12
The King of Fighters XIIAchievements07/15/09