The following page is an alphabetical section from the list of PC games.

Name Developer Publisher Genre(s) Operating system(s) Date released
OneShot Liitle Cat Feet Degica Adventure, Puzzle Microsoft Windows December 8, 2016
On Your Tail Memorable Games The Powell Group Mystery adventure, life simulation Microsoft Windows November 21, 2024
Operation Flashpoint: Cold War Crisis Bohemia Interactive Codemasters Tactical shooter Microsoft Windows June 22, 2001
Operation Flashpoint: Resistance Bohemia Interactive Codemasters Tactical shooter Microsoft Windows July 10, 2002
Orcs Must Die 2 Robot Entertainment Robot Entertainment Action, Tower Defense Microsoft Windows July 30, 2012
Order of War Wargaming Square Enix Strategy Microsoft Windows September 22, 2009
Ori and the Blind Forest Moon Studios Microsoft Studios Platform Microsoft Windows March 11, 2015
Ori and the Will of the Wisps Moon Studios Xbox Game Studios Platform Microsoft Windows March 11, 2020
osu! Dean Herbert PPY Developments PTY Rhythm, music Microsoft Windows, macOS September 16, 2007
Out of the Park Baseball Sports Interactive Sports Interactive Sports Microsoft Windows March 26, 2006
Outcast Appeal Infogrames Adventure, Action Microsoft Windows August 31, 1999
Outlast Red Barrels Red Barrels Action Microsoft Windows, Linux, macOS September 4, 2013
Overcooked Ghost Town Games Team17 Action, Indie, Simulation Game Microsoft Windows, Nintendo Switch, PS4, PS5, Xbox One, Xbox Series, August 2, 2016
Overgrowth Wolfire Games Wolfire Games Action Microsoft Windows, Linux, macOS September 17, 2008
Overwatch Blizzard Entertainment Blizzard Entertainment Action Microsoft Windows May 24, 2016
Oxenfree Night School Studio Night School Studio Graphic adventure Microsoft Windows, Linux, macOS January 15, 2016

References

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