| Game Title |
Release Date |
| Obscure |
04/06/2005 |
| Obscure II |
|
| Oddworld Stranger's Wrath |
Cancelled |
| Odin Sphere |
05/22/2007 |
| Oekaki Puzzle |
|
| Ojousama Kumikyoku: Sweet Concert |
|
| Okage: Shadow King |
10/01/2001 |
| Okami |
09/19/2006 |
| One Piece Grand Battle 3 |
|
| One Piece Land Land |
|
| One Piece: Grand Adventure |
08/29/2006 |
| One Piece: Grand Battle |
09/07/2005 |
| One Piece: Pirates Carnival |
09/12/2006 |
| Oni |
01/29/2001 |
| Onihama Bakusou Gurentai: Gekitou-Hen |
|
| Onimusha 2: Samurai's Destiny |
08/28/2002 |
| Onimusha 3: Demon Siege |
04/27/2004 |
| Onimusha Blade Warriors |
03/24/2004 |
| Onimusha: Dawn of Dreams |
03/07/2006 |
| Onimusha: Warlords |
03/13/2001 |
| Online Pro Wrestling |
|
| Oookuki |
|
| Open Season |
09/19/2006 |
| Operation Air Assault |
|
| Operation Air Assault 2 |
|
| Orange Honey |
|
| Orange Honey: Boku wa Kimi ni Koishiteru |
|
| Orchid |
Cancelled |
| Ore no Shite Agake |
|
| Oretachi Game Center: Akumajou Dracula |
|
| Oretachi Game Center: Contra |
|
| Oretachi Game Center: Pooyan |
|
| Oretachi Game Center: Quarth |
|
| Oretachi Game Center: Thunder Cross |
|
| Oretachi Game Center: Trio the Punch |
|
| Orphen: Scion of Sorcery |
10/23/2000 |
| Otome no Jijou |
|
| Ougon Kishi Garo |
|
| Ouran Koukou Host Bu |
|
| Outcast 2: The Lost Paradise |
Cancelled |
| Outlaw Golf 2 |
11/25/2004 |
| Outlaw Tennis |
07/26/2005 |
| Outlaw Volleyball Remixed |
05/17/2005 |
| OutRun 2006: Coast 2 Coast |
04/25/2006 |
| OutRun2 Special Tour |
|
| Over the Hedge |
05/09/2006 |
| Oz |
|
