|
|
Obake no Q Tarou - Wanwan Panic (Japan) |
???? |
Open |
|
|
Obocchama-kun (Japan) |
???? |
Open |
|
|
Obuchayushchiy Kartridzh (Russia) (Subor Keyboard) (Unl) |
???? |
Open |
|
|
Oeka Kids - Anpanman no Hiragana Daisuki (Japan) |
???? |
Open |
|
|
Oeka Kids - Anpanman to Oekaki Shiyou!! (Japan) |
???? |
Open |
|
|
Oishinbo - Kyuukyoku no Menu Sanbon Shoubu (Japan) |
???? |
Open |
|
|
Okkotoshi Puzzle - Tonjan! (Japan) |
???? |
Open |
|
|
Okkotoshi Puzzle - Tonjan! (Japan) (Beta) |
???? |
Open |
|
|
Oliver's Shell - An Adventure Story (World) (Aftermarket) (Unl) |
???? |
Open |
|
|
Olympic 2000 - 1000000-in-1 (Asia) (En) (Pirate) |
???? |
Open |
|
|
Olympic 2000 - 500-in-1 (Asia) (En) (FL-4466A) (Pirate) |
???? |
Open |
|
|
Olympic I.Q. (Asia) (Ja) (PAL) (Unl) |
???? |
Open |
|
|
Olympic I.Q. (Korea) (En) (Unl) |
???? |
Open |
|
|
Olympus no Tatakai (Japan) |
???? |
Open |
|
|
Omega Driver (World) (Proto) (2018-09-17) (Aftermarket) (Unl) |
???? |
Open |
|
|
Omega Driver (World) (Proto) (2018-11-05) (Aftermarket) (Unl) |
???? |
Open |
|
|
Omoikkiri Tanteidan HaadoGumi - Matenrou no Chousenjou (Japan) |
???? |
Open |
|
|
Once Upon a Time in China (World) (Aftermarket) (Pirate) |
???? |
Open |
|
|
Oneshot (World) (Proto) (Aftermarket) (Unl) |
???? |
Open |
|
|
Onyanko Town (Japan) |
???? |
Open |
|
|
Oof McBrewster's Haunted House Adventure (World) (Aftermarket) (Unl) |
???? |
Open |
|
|
Oopie's Quest (World) (v1.2.0) (Aftermarket) (Unl) |
???? |
Open |
|
|
Ooze Redux (World) (Demo) (Aftermarket) (Unl) |
???? |
Open |
|
|
Operation Secret Storm (USA) (Unl) |
???? |
Open |
|
Linked with game |
Operation Wolf (Europe) |
1992 |
Open |
|
Linked with game |
Operation Wolf (Japan) |
1989 |
Open |
|
Linked with game |
Operation Wolf (USA) |
1989 |
Open |
|
|
Oratorio (World) (Demo) (2022-08-26) (Aftermarket) (Unl) |
???? |
Open |
|
|
Oratorio (World) (Demo) (2022-09-01) (Byte-Off 2022) (Aftermarket) (Unl) |
???? |
Open |
|
|
Oratorio (World) (Demo) (2023-08-05) (Aftermarket) (Unl) |
???? |
Open |
|
|
Orb-3D (USA) |
???? |
Open |
|
|
Orebody - Binder's Tale (World) (Demo) (2021-10-31) (Aftermarket) (Unl) |
???? |
Open |
|
|
Orebody - Binder's Tale (World) (Demo) (2022-06-05) (Aftermarket) (Unl) |
???? |
Open |
|
|
Orebody - Binder's Tale (World) (Demo) (2022-09-29) (Aftermarket) (Unl) |
???? |
Open |
|
|
Orebody - Sand Ripples (World) (Aftermarket) (Unl) |
???? |
Open |
|
|
Osomatsu-kun - Back to the Me no Deppa no Maki (Japan) |
???? |
Open |
|
Linked with game |
Otaku no Seiza - An Adventure in the Otaku Galaxy (Japan) |
1991 |
Open |
|
|
Othello (Asia) (En) (Unl) |
???? |
Open |
|
|
Othello (Australia) (HES) (Unl) |
???? |
Open |
|
|
Othello (Japan) |
???? |
Open |
|
|
Othello (Japan) (DV 2) |
???? |
Open |
|
|
Othello (Japan) (DV 5) (Disk Writer) |
???? |
Open |
|
|
Othello (Japan) (Rev 1) (Possible Proto) |
???? |
Open |
|
|
Othello (USA) |
???? |
Open |
|
|
Otocky (Japan) |
???? |
Open |
|
|
Oulu Zhi Zhan (China) (Pirate) |
???? |
Open |
|
|
Ouroboros (World) (1JAM-Loop) (Aftermarket) (Unl) |
???? |
Open |
|
|
Ouroboros (World) (Ludum Dare 47) (Aftermarket) (Unl) |
???? |
Open |
|
|
Outlanders (Japan) |
???? |
Open |
|
Linked with game |
Over Horizon (Europe) |
1991 |
Open |
|
Linked with game |
Over Horizon (Japan) |
1991 |
Open |
|
|
Over Horizon - Fei Li Hangdao (Asia) (En) (Pirate) |
???? |
Open |
|
|
Overlord (USA) |
1992 |
Open |