O’Riley’s Mine (1983)(Datasoft)[k-file] (USA) Atari 800 GAME ROM ISO

Othello (1978) (Atari) (PAL) (USA) Atari 2600 GAME ROM ISO

Othello (Japan) Gameboy GAME ROM ISO

Out Zone (Zero Wing TP-015 PCB conversion) Arcade GAME ROM ISO

Oriental Legend – Xi Yo Gi Shi Re Zuang (V126) Arcade GAME ROM ISO

Open Season (Europe) GameCube GAME ROM ISO

Obstickle (USA) Amiga 500 GAME ROM ISO

Operation Wolf [b3] (Japan) TurboGrafx 16 GAME ROM ISO

Operacja Pustynna Burza (USA) Atari 800 GAME ROM ISO

Otona No Onnaryoku Kentei (Japan) Nintendo DS GAME ROM ISO

Operation Wolf (Japan) TurboGrafx 16 GAME ROM ISO

Offroadt (USA) MAME 037b11 GAME ROM ISO