| Game | Updated |
| Obscure | 08/15/2011 |
| OKAGE: Shadow King | 05/24/2011 |
| Okami | 04/10/2011 |
| One Piece Grand Battle! | 12/7/2011 |
| Oni | 09/13/2011 |
| Onimusha 3: Demon Siege | 09/13/2011 |
| Onimusha Blade Warriors | 09/23/2011 |
| Onimusha: Dawn of Dreams | 06/15/2011 |
| Onimusha: Warlords | 05/3/2011 |
| Open Season | 08/31/2011 |
| Orphen: Scion of Sorcery | 09/14/2011 |
| Outlaw Golf 2 | 05/11/2011 |
| Outlaw Tennis | 11/18/2011 |
| Outlaw Volleyball Remixed | 12/27/2011 |
| Over the Hedge | 06/21/2011 |
| The Onechanbara 2 | 11/29/2011 |
| The Oneechamploo: The Oneechan Special Chapter | 09/2/2011 |