NES

Joe _ MacUSA · 36 cheats

Joe _ Mac - Caveman NinjaEUR · 5 cheats

John Elway's QuarterbackUSA · 2 cheats

John Smith Special Agent · 8 cheats

Jordan vs Bird - One on OneUSA · 6 cheats

Journey to SiliusUSA · 56 cheats

Journey to Silius (USA, Europe) · 34 cheats

JoustUSA · 15 cheats

Joust (USA, Japan) · 6 cheats

Jungle Book, TheUSA · 35 cheats

Jungle Book, The (USA, Europe) · 19 cheats

Jurassic ParkUSA · 33 cheats

Jurassic Park (USA, Europe) · 8 cheats

Jurassic Park- The Lost World · 2 cheats

Kabuki - Quantum FighterUSA · 32 cheats

Kabuki - Quantum Fighter (Rumbles) · 2 cheats

Kabuki - Quantum Fighter (USA, Europe) · 15 cheats

Karate ChampUSA · 10 cheats

Karate Kid, TheUSA · 43 cheats

KarnovUSA · 39 cheats

Karnov (USA, Japan) · 28 cheats

Kick MasterUSA · 14 cheats

Kickle CubicleUSA · 35 cheats

Kickle Cubicle (USA, Europe) · 7 cheats

KickMasterUSA · 34 cheats

Kid Icarus (Rumbles) · 2 cheats

Kid Icarus (USA, Europe) · 145 cheats

Kid Klown in Night Mayor WorldUSA · 29 cheats

Kid Kool and the Quest for the Seven Wonder HerbsUSA · 37 cheats

Kid Niki - Radical NinjaUSA · 35 cheats

Kid Niki - Radical Ninja (diff)USA · 6 cheats

King's KnightUSA · 11 cheats

King's Knight (USA, Japan) · 7 cheats

Kings of the Beach - Professional Beach VolleyballUSA · 10 cheats

Kirby's AdventureEUR · 79 cheats

Kirby's Adventure (USA, Europe) · 12 cheats

Kiwi Kraze - A Bird-Brained Adventure!USA · 48 cheats

KlashBallUSA · 12 cheats

Klax (USA, Japan) · 7 cheats

Knight RiderUSA · 45 cheats

Konami Hyper SoccerEUR · 1 cheats

Krion Conquest, TheUSA · 31 cheats

Krusty's Fun HouseUSA · 20 cheats

Krusty's Fun House (USA, Europe) · 8 cheats

Kung FuEUR · 18 cheats

Kung Fu (Japan, USA) · 30 cheats

Kung Fu (Rumbles) · 2 cheats

Kung-Fu HeroesUSA · 44 cheats