Oddworld - Abe's Exoddus
PlayStationOddworld - Abe's Oddysee
PlayStationOddworld Adventures
Game BoyOddworld Adventures 2
Game Boy ColorOekaki Logic
Super NintendoOekaki Logic 2
Super NintendoOh Mummy Genesis
Mega DriveOh No! More Lemmings
AmigaOkkotoshi Puzzle Tonjan!?
NintendoUNPUBLISHED
Olivia no Mystery
Super NintendoOraga Land Shusai - Best Farmer Shuukakusai
Super NintendoOtenki Kororin
PlayStationOtoboke Ninja Colosseum
Super NintendoOtto's Ottifanten - Baby Bruno's Nightmare
Game BoyOu-chan no Oekaki Logic
Super NintendoOut of This World
Mega DriveOut of This World
Super NintendoOver the Hedge
Game Boy Advance