NES

Cobra Command (USA, Japan) · 5 cheats

Cobra TriangleUSA · 29 cheats

Cobra Triangle (USA, Europe) · 10 cheats

Code Name - ViperUSA · 71 cheats

CommandoUSA · 16 cheats

ConanUSA · 21 cheats

ConflictUSA · 3 cheats

Conquest of the Crystal PalaceUSA · 39 cheats

ContraUSA · 67 cheats

Contra (Rumbles) · 1 cheats

Contra ForceUSA · 32 cheats

Cool WorldUSA · 36 cheats

Cowboy KidUSA · 22 cheats

CrackoutEUR · 2 cheats

Crackout (USA, Europe) · 1 cheats

Crash 'n' the Boys - Street ChallengeUSA · 34 cheats

Cross Fire (USA, Japan) · 1 cheats

CrossFireUSA · 4 cheats

Crystal MinesUSA · 1 cheats

CrystalisUSA · 132 cheats

Crystalis (U) (Prototype)USA · 20 cheats

Cyber Stadium Series - Base WarsUSA · 24 cheats

CyberballUSA · 22 cheats

Cybernoid - The Fighting MachineUSA · 50 cheats

D-

D-Cat 100-in-1 · 3 cheats

D+

D+pad Hero 2 · 5 cheats

Da Hua Xi You (Ch) · 6 cheats

Danny Sullivan's Indy HeatUSA · 18 cheats

Danny Sullivan's Indy Heat (USA, Europe) · 5 cheats

DarkmanUSA · 18 cheats

Darkman (USA, Europe) · 2 cheats

Darkwing DuckUSA · 35 cheats

Darkwing Duck (USA, Europe) · 10 cheats

Dash Galaxy in the Alien AsylumUSA · 68 cheats

David Crane's A Boy and His Blob - Trouble on BloboloniaUSA · 60 cheats

David Crane's A Boy and His Blob - Trouble on Blobolonia (USA, Europe) · 41 cheats

Day Dreamin' DaveyUSA · 42 cheats

Days of ThunderUSA · 23 cheats

Days of Thunder (USA, Europe) · 6 cheats

Deadly TowersUSA · 30 cheats

Death RaceUSA · 3 cheats

Defender IIUSA · 21 cheats

Defender of the CrownUSA · 64 cheats

Defenders of Dynatron CityUSA · 8 cheats

Deja VuUSA · 23 cheats

Demon SwordUSA · 59 cheats

Desert CommanderUSA · 20 cheats

Destination EarthstarUSA · 20 cheats