Orange_Squash.Merlin (USA) Commodore 64 GAME ROM ISO

Ougon No Taiyou – Shikkokunaru Yoake (Japan) Nintendo DS GAME ROM ISO

Oto O Tsunagou! Gunpey Reverse (Japan) Nintendo DS GAME ROM ISO

Oscar_Disk2 (USA) Amiga 500 GAME ROM ISO

Onegai Monsters (Japan) Nintendo 64 GAME ROM ISO

Overhead Adventure Demo 5 (PD) (USA) Atari 2600 GAME ROM ISO

Open Season (Europe) GameCube GAME ROM ISO

Operation Wolf [b1] (Japan) TurboGrafx 16 GAME ROM ISO

Otome Wa Boku Ni Koishiteru Portable (Japan) Playstation Portable GAME ROM ISO

Oshare Princess 2 And Doubutsu Kyaranabi (Japan) Gameboy Advance GAME ROM ISO

Obelix (1983) (Atari) (NTSC) (USA) Atari 2600 GAME ROM ISO

Oni 2 – Innin Densetsu (Japan) Gameboy GAME ROM ISO