| Title |
Platform |
Genre |
Release Date |
| 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 |
| Operation Flashpoint: Cold War Crisis |
PC |
Action |
Aug 30, 2001 |
| Operation Flashpoint: Dragon Rising |
PC, X360, PS3 |
Action |
Oct 6, 2009 |
| Operation Flashpoint: Elite |
XBOX |
Action Adventure |
Nov 9, 2005 |
| Operation Flashpoint: Red River |
PC, X360, PS3 |
Action |
Jun 7, 2011 |
| Operation Flashpoint: Resistance |
PC |
Simulation |
Jul 10, 2002 |
| Operation Mania |
PC |
Other |
Nov 4, 2008 |
| Operation: Vietnam |
DS |
Action |
Aug 14, 2007 |
| Opoona |
WII |
RPG |
Mar 25, 2008 |
| Orbitor |
PC |
Action Adventure |
na |
| Orc Attack: Flatulent Rebellion |
PC, X360, PS3 |
Action |
Oct 8, 2013 |
| Orcs & Elves |
DS |
RPG |
Nov 13, 2007 |
| Orcs Must Die! |
PC, X360 |
Other |
Oct 12, 2011 |
| Orcs Must Die! 2 |
PC |
Action |
Jul 30, 2012 |
| Order of War |
PC |
Strategy |
Sep 22, 2009 |
| Order of War: Challenge |
PC |
Strategy |
Mar 12, 2010 |
| Order Up! |
WII, 3DS, PS3 |
Strategy |
Jul 22, 2008 |
| Ordyne |
WII |
Action |
May 7, 2007 |
| Organ Trail: Director's Cut |
PC |
Adventure |
Jan 1, 1970 |
| Organic Panic |
PS3, PC, X360 |
Puzzle |
na |
| Orgarhythm |
PSVITA |
Strategy |
Oct 23, 2012 |
| Original War |
PC |
Strategy |
Dec 3, 2001 |
