| Game Name | System |
|---|
| Other Life Azure Dreams (Japan) | PSX |
| Other Place v1.2 (1992-04-20)(CDeFG Games)(FW) | Atari ST |
| Other Side, The (1985)(Tom Snider)[cr] | Apple2 |
| Other World, The Issue 3 (F) (19xx) (PD) (Disk 1 of 2) | CPC |
| Other World, The Issue 3 (F) (19xx) (PD) (Disk 2 of 2) | CPC |
| Oto o Tsunagou! Gunpey Reverse (J)(Legacy) | NDS |
| Otoboke Ninja Colosseum (Japan) | SNES |
| Otogi Juushi Akazukin (J)(WRG) | NDS |
| Otogibanashi Taisen (Japan) | GB |
| Otogirisou (Japan) | SNES |
| Otogizoushi Urashima Mahjong (Japan) | MAME |
| Otome wa Boku ni Koishiteru Portable (Japan) | PSP |
| Otome wa Boku ni Koishiteru Portable - Futari no Elder (Japan) | PSP |
| Otometeki Koi Kakumei - Love Revo! Portable (Japan) | PSP |
| Otometeki Koi Kakumei - Love Revo!! DS (J)(6rz) | NDS |
| Otona Ryoku Kentei (J)(2CH) | NDS |
| Otona no DS Golf (J)(WRG) | NDS |
| Otona no DS Mystery - Izumi Jiken File (J)(6rz) | NDS |
| Otona no Joushikiryoku Training DS (J)(WRG) | NDS |
| Otona no Joushikiryoku Training DS (v01) (JP)(2CH) | NDS |
| Otona no Mahjong (Japan 880628) | MAME |
| Otona no Onnaryoku Kentei (J)(Caravan) | NDS |
| Otona no Renai Shousetsu - DS Harlequin Selection (J) | NDS |
| Otoshi Deka - Keiji San, Watashi ga Yarimashita (J)(High Road) | NDS |
| Otsugea Uranai na Desu. (Japan) | PSP |
| Ottifanten - Kommando Stoertebeker (Germany) | GBC |
| Ottifanten - Kommando Stoertebeker (Germany) [En by Alemanic v1.2] | GBC |
| Ottifanten Pinball (G)(Rising Sun) | GBA |
| Ottifants, The (Europe) | Genesis |
| Ottifants, The (Europe) (En,Fr,De,Es,It) | SMS |
| Ottifants, The (Europe) (En,Fr,De,Es,It) | Game Gear |
| Ottifants, The (Germany) (Beta) | Genesis |
| Otto Issue 1 (UK) (1995) (PD) | CPC |
| Otto Issue 2 (UK) (1996) (PD) | CPC |
| Otto Issue 3 (UK) (1996) (PD) (Disk 1 of 2) | CPC |
| Otto Issue 3 (UK) (1996) (PD) (Disk 2 of 2) | CPC |
| Otto Issue 4 (UK) (1996) (PD) (Disk 1 of 2) | CPC |
| Otto Issue 4 (UK) (1996) (PD) (Disk 2 of 2) | CPC |
| Otto Issue 5 (UK) (1997) (PD) (Disk 1 of 2) | CPC |
| Otto Issue 5 (UK) (1997) (PD) (Disk 2 of 2) | CPC |
| Otto's Ottifanten - Baby Bruno's Nightmare (Europe) (En,Fr,De,Es) | GB |
| Otto's Ressource Construction Set v1.00 (1991-10-10)(Th. Otto)(fr) | Atari ST |
| Ou Dorobou Jing - Angel Version (Japan) | GBC |
| Ou Dorobou Jing - Devil Version (Japan) | GBC |
| Oubunsha Deru-Jun - Chiri DS (v01) (J) | NDS |
| Oubunsha Deru-Jun - Rekishi DS (JP) | NDS |
| Oubunsha Deru-Jun - Rika DS (JP) | NDS |
| Ouchan no Oekaki Logic (J) [M] | WS |
| Ouchan no Oekaki Logic (J) [M][f1] | WS |
| Ougon No Buta (19xx)(Shoujo) | X68K |
| Ougon No Rashinban (1989)(Riverhill Soft)(Disk 1 of 3)(System) | X68K |
| Ougon No Rashinban (1989)(Riverhill Soft)(Disk 2 of 3)(Game) | X68K |
| Ougon No Rashinban (1989)(Riverhill Soft)(Disk 3 of 3)(Data) | X68K |
| Ougon no Shiro (Japan) | MAME |
| Ougon no Taiyo (J)(Eurasia) | GBA |
| Ougon no Taiyou - Shikkokunaru Yoake (J) | NDS |
| Ougon no Taiyou - Shitsu Warate Jidai (J)(Eurasia) | GBA |
| Oui-Oui - Grande Fete au Pays des Jouets (F) | NDS |
| Oui-Oui et le Grand Carnaval des Jouets (F)(EXiMiUS) | NDS |
| Oujisama Lv1 (Japan) | PSX |
| Oukahoushin - Oukasakishitoki (Japan) | DC |
| Oukyuu no Hihou Tension (Japan) | PSX |
| Ouma ga Toki (Japan) | PSX |
| Ouma ga Toki 2 (Japan) | PSX |
| Oumagatoki - Kaidan Romance (Japan) | PSP |
| Our Breeding Series - My Ameba (J)(Eurasia) | GBA |
| Our Breeding Series - My Beetle (J)(Eurasia) | GBA |
| Our House (US)(Suxxors) | NDS |
| Our School v1.2 (19xx)(Proteus Scenarios)[bootfile] [SSD] | BBC Micro |
| Ouran Koukou Host-Bu DS (JP)(BAHAMUT) | NDS |
| Out Board (1990)(Loriciel)(fr)(Disk 1 of 2) | Atari ST |
| Out Board (1990)(Loriciel)(fr)(Disk 2 of 2) | Atari ST |
| Out Cast (1987)(CRL Group) | ZX Spectrum (TAP) |
| Out Copy (19xx)(-) | ZX Spectrum Z80 |
| Out For The Count (1989)(Dynamite Designs) | ZX Spectrum Z80 |
| Out For The Count (1989)(Dynamite Designs) | ZX Spectrum (TAP) |
| Out Live (Japan) | TG16 |
| Out Live - Be Eliminate Yesterday (Japan) | PSX |
| Out Of The Limelight (1992)(Zenobi Software) | ZX Spectrum Z80 |
| Out Of The Shadows (1984)(Mizar Computing) | ZX Spectrum Z80 |
| Out Of The Shadows (1984)(Mizar Computing) | ZX Spectrum (TAP) |
| Out Of The Shadows (1984)(Mizar Computing)[a2] | ZX Spectrum Z80 |
| Out Of The Shadows (1984)(Mizar Computing)[a] | ZX Spectrum Z80 |
| Out Of This World (1987)(Ariolasoft) | ZX Spectrum (TAP) |
| Out Of This World (1987)(Reaktor) | ZX Spectrum Z80 |
| Out Of This World (1991)(Interplay) | DOS |
| Out Run (1987)(U.S. Gold) | Atari ST |
| Out Run (1987)(U.S. Gold) | Atari ST |
| Out Run (1987)(U.S. Gold)[a] | Atari ST |
| Out Run (1987)(U.S. Gold)[cr Axel Follet] | Atari ST |
| Out Run (1987)(U.S. Gold)[cr BCS] | Atari ST |
| Out Run (1987)(U.S. Gold)[cr Bladerunners] | Atari ST |
| Out Run (1987)(U.S. Gold)[cr Fantasy Cracker] | Atari ST |
| Out Run (E) | C64 Tapes |
| Out Run (E) | C64 PP |
| Out Run (J) | Saturn |
| Out Run (Japan) | TG16 |
| Out Run (Japan) | Game Gear |
| Out Run (Japan, deluxe sitdown) (FD1089A 317-0019) | MAME |
| Out Run (Mega-Tech, SMS based) | MAME |
