Octopus (AKA Name That Game) (Carrere Video) (PAL) (USA) Atari 2600 GAME ROM ISO

Oni Zero – Sengoku Ransei Hyakkaryouran (6rz) (Japan) Nintendo DS GAME ROM ISO

Olympic Winter Games – Lillehammer 94 [b1] (USA) Sega Genesis GAME ROM ISO

Odysseus (USA) Atari 800 GAME ROM ISO

Overlord (Virgin)_Disk1 (USA) Amiga 500 GAME ROM ISO

Ochainu No Daibouken (6rz) (Japan) Nintendo DS GAME ROM ISO

Outrun (USA) Commodore 64 GAME ROM ISO

OutRunners (USA) Sega Genesis GAME ROM ISO

Oh Frankie (USA) Atari 800 GAME ROM ISO

Oink.CRL (USA) Commodore 64 GAME ROM ISO

Omega (earlier) Arcade GAME ROM ISO

Orbits.CP_Verlag.+1-FTM (USA) Commodore 64 GAME ROM ISO