PC game requirements, A to Z

Pick a game to see what PC it needs, what a better PC gets you, and our PCs that run it. 3,057 games, checked 15 October 2026. Or type a game into the Game Finder.

64 games starting with O

• >observer_
• Ocean Keeper: Dome Survival
• Octodad: Dadliest Catch
• OCTOPATH TRAVELER II
• OCTOPATH TRAVELER™
• Odd Town
• Offworld Trading Company
• Okami HD
• Old School Rally
• Old School RuneScape
• OLDTV
• OMORI
• OMSI 2: Steam Edition
• Once Human
• One Finger Death Punch
• One Piece Pirate Warriors 3
• ONE PIECE World Seeker
• ONE PIECE: PIRATE WARRIORS 4
• One Step From Eden
• One Way Tickets
• One-armed robber
• OneShot
• Online: 404
• Only If
• Onward
• OpenTTD
• Operation: Harsh Doorstop
• Operation: Tango
• Opus Magnum
• OPUS: Echo of Starsong - Full Bloom Edition
• Orcs Must Die!
• Orcs Must Die! 2
• Orcs Must Die! 3
• Orcs Must Die! Deathtrap
• Orcs Must Die! Unchained
• Order of the Sinking Star
• Ori and the Blind Forest
• Ori and the Blind Forest: Definitive Edition
• Ori and the Will of the Wisps
• ORION: Prelude
• Orwell: Keeping an Eye On You
• Osiris: New Dawn
• Ostriv
• Otaku's Adventure
• Our Life: Beginnings & Always
• Out There Somewhere
• Outcore: Desktop Adventure
• Outer Wilds
• Outlast
• Outlast 2
• Outlaws of the Old West
• Outpost: Infinity Siege
• OUTRIDERS
• Outward Definitive Edition
• over the hill
• Overcooked
• Overcooked! 2
• Overcooked! All You Can Eat
• Overgrowth
• Overlord™
• Overwatch®
• Owlboy
• Oxenfree
• Oxygen Not Included