Off the Wall (Sente) MAME 2003 Plus GAME ROM ISO

Oriental Legend 2 (Korea) / Xi You Shi E Zhuan Super Plus (World, China, Japan, Hong Kong, Taiwan) (ver. 205) [Incomplete Dump] Arcade GAME ROM ISO

Odd_Man_Out_Plurals (USA) Atari 800 GAME ROM ISO

Oldtimer – Erlebte Geschichte Teil II_Disk8 (USA) Amiga 500 GAME ROM ISO

Off Road (Europe) Playstation Portable GAME ROM ISO

Orthographe (USA) Atari 800 GAME ROM ISO

Operation Europe – Path To Victory 1939-45 (USA) Super Nintendo GAME ROM ISO

Olli_And_Lissa.ISI.+3pd-REM (USA) Commodore 64 GAME ROM ISO

Orbis Pictus – Nemcina (USA) Atari 800 GAME ROM ISO

Obocchamakun [a1] (Japan) TurboGrafx 16 GAME ROM ISO

Overtop (USA) Neo Geo GAME ROM ISO

Overhead Adventure Demo 1 (PD) (USA) Atari 2600 GAME ROM ISO