| Title |
Platform |
Genre |
Release Date |
| One Piece: Pirate Warriors |
PS3 |
Action |
Sep 25, 2012 |
| One Piece: Pirates' Carnival |
PS2, GC |
Fighting |
Sep 12, 2006 |
| One, The |
PSP MOVIE |
Other |
na |
| Onechanbara: Bikini Samurai Squad |
X360 |
Action |
Feb 10, 2009 |
| Onechanbara: Bikini Zombie Slayers |
WII |
Action |
Feb 10, 2009 |
| Ong Bak Tri |
ANDROID, IPHONE OS, PC, PS3, X360 |
Action |
na |
| Ong Bak: The Thai Warrior |
PSP MOVIE |
Other |
na |
| Oni |
PS2, PC |
Action |
Jan 29, 2001 |
| Onimusha 2: Samurai's Destiny |
PS2 |
Action |
Aug 26, 2002 |
| Onimusha 3: Demon Siege |
PS2, PC |
Action |
Apr 27, 2004 |
| Onimusha Blade Warriors |
PS2 |
Fighting |
Mar 24, 2004 |
| Onimusha Tactics |
GBA |
Strategy |
Nov 13, 2003 |
| Onimusha: Dawn of Dreams |
PS2 |
Adventure |
Mar 7, 2006 |
| Onimusha: Warlords |
PS2 |
Action |
Mar 14, 2001 |
| Online Chess Kingdoms |
PSP |
Strategy |
Nov 29, 2006 |
| Onmyoji |
PSP MOVIE |
Other |
na |
| Onslaught |
WII |
Action |
Feb 23, 2009 |
| Ontamarama |
DS |
Strategy |
Nov 8, 2007 |
| Oops! Prank Party |
WII |
Other |
Oct 5, 2010 |
| Open Season |
PS2, XBOX, GC, X360, DS, GBA, PSP, PC, WII, PSP MOVIE |
Action |
Sep 19, 2006 |
| Open Season 2 |
PSP MOVIE |
Other |
na |
| Open Water |
PSP MOVIE |
Other |
na |
| Operation Barbarossa - The Struggle for Russia |
PC |
Strategy |
Sep 10, 2010 |
| Operation Darkness |
X360 |
RPG |
Jun 24, 2008 |
| Operation Flashpoint 2: Dragon Rising |
PC |
Other |
Jan 1, 1970 |
