| Titre | Année | Genre |
|---|---|---|
| Oh! Hajiki! Final | 1990 | Réflexion |
| Oh! Pai | ???? | Réflexion |
| Ohootsuku Ni Kiyu | ???? | Aventures |
| Okumanchouja | ???? | Aventures |
| Olteus II | 1991 | Shoot em up |
| One-key Flying | ???? | Shoot em up |
| Oni Gokko 68 | ???? | Aventures |
| Ooedo Hanseiki | ???? | Réflexion |
| Ora Ora Ball | 1995 | Arcade |
| Ora-Shoot | 1996 | Shoot em up |
| Orange Iro No Biyaku | 1989 | Réflexion |
| Ossan No Dotsuki Game Special | ???? | Arcade |
| Othello Master | 1991 | Réflexion |
| Otoko Dama | 1999 | Shoot em up |
| Otoshite Pon | ???? | Réflexion |
| Otsukerumono No Tetsujin | 1996 | Shoot em up |
| Ouen no Uta | 2000 | Aventures |
| Ougon No Buta | ???? | Arcade |
| Over Driver | 1992 | Shoot em up |
| Overtake | ???? | Formule 1 |
| Pac-Land | 1994 | Arcade |
| Pac-Man | ???? | Arcade |
| Pac-Mania | 1989 | Arcade |
| Pac-Men | 1995 | Arcade |
| Pachinko World | 1992 | Machine à sous |
| Pachisuro Divels XX | 1995 | Machine à sous |
| Pai Koukan Kyou Kou Kan Nakoruru Hen | 1994 | Mahjong |
| Parodius | 1991 | Shoot em up |
| Paroran | 1992 | Shoot em up |
| Partial Axiom | 1997 | Shoot em up |
| Paruru | ???? | Arcade |
| Pasocomic Purple Cat | 1993 | Aventures |
| Pasocomic Purple Cat Vol. 2 - Hospital Tokushuu | ???? | Aventures |
| Pasocomic Purple Cat Vol. 3 | ???? | Aventures |
| Patalliro! Game | ???? | Arcade |
| Penguin Pro-68K | ???? | Réflexion |
| Pensan CD | 1992 | Shoot em up |
| Pentaris | 1990 | Réflexion |
| Peshi Peshi Puzzle | ???? | Réflexion |
| Peshi Peshi Puzzle 2 | ???? | Réflexion |
| Phalanx | 1991 | Shoot em up |
| Phantasie III The Wrath of Nikademus | ???? | Aventures |
| Phantasie IV | ???? | RPG |
| Phoenix Quiz Slime King Wo Hari Sakase | 1990 | Quiz |
| Pias | ???? | Aventures |
| Pict Puzzle | ???? | Réflexion |
| Pinball | ???? | Flipper |
| Pinball in the Space | 1992 | Flipper |
| Pinball Pinball | 1990 | Flipper |
| Pinky 1 | 1990 | Aventures |
