| Title |
Year |
Genre |
| Omise de Tensyu |
1999 |
RPG |
| Omizu no Hanamichi |
2000 |
Adventure |
| One |
1998 |
Action |
| One on One |
1998 |
Basketball |
| One Piece - Oceans of Dreams! |
2003 |
RPG |
| One Piece - Tobidase Kaizokudan! |
2003 |
Action |
| One Piece Grand Battle! |
2003 |
Fighting |
| One Piece Grand Battle! 2 |
2002 |
Fighting |
| One Piece Mansion |
2001 |
Puzzle |
| One Two Smash - Tanoshii Tennis |
2000 |
Tennis |
| Ongaku Tsukuru - Kanade-Ru 2 |
1998 |
Software |
| Ongaku Tsukuru 3 |
2001 |
Music / Dance |
| Oni Taiji, The - Mezase! Nidaime Momotarou |
1995 |
Board game |
| ONSIDE Complete Soccer |
1996 |
Soccer |
| Ooedo Huusui Ingaritsu Hanabi 2 |
2000 |
Board game |
| Open Golf, The - History of Turnberry |
1996 |
Golf |
| Option Tuning Car Battle |
1998 |
Racing |
| Option Tuning Car Battle 2 |
1999 |
Racing |
| Option Tuning Car Battle Spec R |
2000 |
Racing |
| Oracle no Houseki - Jewels of the Oracle |
1996 |
Adventure |
| Ore no Ryouri |
1999 |
Arcade |
| Ore no Shikabane o Koete Yuke |
1999 |
RPG |
| Ore! Tomba |
1997 |
Platform |
| Oro e Gloria - La Strada per El Dorado |
2000 |
Adventure |
| Oro y Gloria - La Ruta hacia El Dorado |
2000 |
Adventure |
| Osaka Naniwa Matenrow |
1999 |
Management |
| Oshigotoshiki Jinsei Game - Mezase Shokugyou King |
2000 |
Board game |
| Otenki Kororin |
2002 |
Puzzle |
| Othello World II - Yume to Michi e no Chousen |
1995 |
Puzzle |
| Other Life - Azure Dreams |
1997 |
RPG |
| Otona no Asobi |
1999 |
Casino |
| Ou-chan no Oekaki Logic |
1995 |
Puzzle |
| Oui-Oui - L'Aventure Magique |
2000 |
Adventure |
| Ouji-sama LV1 |
2002 |
RPG |
| Ouji-sama LV1.5 |
2003 |
RPG |
| Oukyuu no Hihou - Tenshon |
1996 |
RPG |
| Ouma ga Toki |
2001 |
Adventure |
| Ouma ga Toki 2 |
2001 |
Adventure |
| Out Live - Be Eliminate Yesterday |
1997 |
RPG |
| Over Drivin' DX - Rally Edition |
1996 |
Racing |
| Over Drivin' DX |
1996 |
Racing |
| Over Drivin' II |
1997 |
Racing |
| Over Drivin' III - Hot Pursuit |
1998 |
Racing |
| Over Drivin' IV |
1999 |
Racing |
| Over Drivin' Skyline Memorial |
1997 |
Racing |
| OverBlood |
1997 |
Adventure |
| OverBlood 2 |
2001 |
Adventure |
| Overboard! |
1998 |
Action |
| Oyaji no Jikan - Nee-chan Hanafuda de Shoubu Ya! |
2000 |
Puzzle |
| Oyaji no Jikan - Nee-chan Mahjong de Shoubu Ya! |
2000 |
Mahjong |
