Showing 1–50 of 220 — page 1
| Title | System | Genre | Release date | Score |
|---|---|---|---|---|
| Obduction Cyan Worlds · Released | PC, Mac, PS4 | Adventure | 21 August 2016 | — |
| Obergenie Sparrow Games | PC | — | — | — |
| Objects in Space Flat Earth Games | PC | Simulation | — | — |
| Obscuritas Ravenscourt · Released | PC | Horror | 17 March 2016 | — |
| Observation No Code · Released | PS4, PC | Adventure | 20 May 2019 | 8 |
| Observer Bloober Team · Released | PC, Xbox One, PS4, Nintendo Switch | Horror, Adventure | 14 August 2017 | 7 |
| Observer: System Redux Bloober Team · Released | PS5, Xbox Series X, PS4, Xbox One, PC | Horror, Adventure | 09 November 2020 | 7 |
| Oceanhorn 2: Knights of the Lost Realm Cornfox & Brothers | iOS, PC, Nintendo Switch | Adventure | TBA | — |
| Oceanhorn 3: Legend of the Shadow Sea Cornfox & Brothers · Released | Ipad, Iphone, iOS | Action, RPG | 04 March 2026 | — |
| Oceanhorn: Chronos Dungeon Cornfox & Brothers · Released | iOS | Action, RPG | 07 January 2021 | — |
| Oceanhorn: Monster of Uncharted Seas Cornfox & Brothers · Released | iOS, PC, PS4, Xbox One, Nintendo Switch | Action, Adventure | 30 November 2013 | — |
| Octahedron Demimonde · Released | — | Music | 19 March 2018 | 8 |
| October Night Games Octobear Knight Games · Released | PC | Horror | 14 October 2020 | — |
| Octodad: Dadliest Catch Young Horses · Released | Linux, Mac, PC, PS4, Wii U, Xbox One | Simulation | 29 January 2014 | 7 |
| Octopath Traveler Square Enix · Released | Nintendo Switch, PC, Stadia, Xbox One, PS4, PS5 | RPG | 12 July 2018 | 8 |
| Octopath Traveler 0 Square Enix · Released | Nintendo Switch, Nintendo Switch 2, Xbox Series X, PS4, PS5, PC | RPG | 03 December 2025 | 8 |
| Octopath Traveler II Square Enix · Released | Nintendo Switch, PC, PS4, PS5, Xbox One, Xbox Series X | RPG | 23 February 2023 | 8 |
| Octopath Traveler: Champions of the Continent Square Enix · Released | iOS, Android | RPG | 26 July 2022 | — |
| OD Kojima Productions | PC, Xbox One, Xbox Series X | Horror | TBA | — |
| OddBallers Ubisoft · Released | — | Party | 25 January 2023 | — |
| Oddman JoyPac | iOS | Fighting | — | 7 |
| Oddworld Just Add Water · Released | PS3, Xbox 360, Wii | Puzzle, Adventure | 2011 | — |
| Oddworld: Abe's Oddysee Oddworld Inhabitants | PC | Platform | — | — |
| Oddworld: Munch's Oddysee HD Just Add Water · Released | PS3 | Platform | 30 September 2011 | — |
| Oddworld: New'n'Tasty Just Add Water · Released | PC, PS3, PS Vita, Wii U, PS4, Xbox One | Platform | 22 July 2014 | 8 |
| Oddworld: Soulstorm Oddworld Inhabitants, Firma Studio · Released | PS5, PS4, PC, Xbox One, Xbox Series X, Nintendo Switch | Platform | 05 April 2021 | 6 |
| Oddworld: Stranger's Wrath Oddworld Inhabitants, Just Add Water | Xbox, PSN, PS3, PS Vita, Ipad, Iphone, iOS, Android, Nintendo Switch | Action | — | 8 |
| Oddyssey: Your Space, Your Way Weird Fish | PC | Adventure | TBA | — |
| Ode Reflections · Released | PC | Music | 26 November 2017 | — |
| Odin Sphere Vanillaware | PS2 | RPG | — | — |
| Odin Sphere: Leifthrasir Vanillaware · Released | PS4, PS Vita, PS3 | Action, RPG | 23 June 2016 | — |
| Odyssey The Young Socratics | PC | Puzzle, Adventure | — | — |
| Of Ash and Steel Fire & Frost | PC | RPG | — | — |
| Of Bird and Cage Capricia Productions · Released | PC | Action, Music, Adventure | 19 May 2021 | — |
| Of Kings and Men Donkey Crew | PC | Action | TBA | — |
| Of Orcs and Men Cyanide Studios, Spiders Studio · Released | PC, PS3, Xbox 360 | Action, RPG | 11 October 2012 | — |
| Off The Grid Gunzilla Games · Released | PC, PS5, Xbox Series X | — | 2023 | — |
| Off-Road Drive 1C: Avalon · Released | PC | Racing | 11 January 2012 | — |
| Offworld Trading Company Mohawk Games · Released | PC | Strategy | 27 April 2016 | 8 |
| Oh My Godheads Titutitech · Released | Xbox One, PS4, PC | Party | 04 December 2017 | 5 |
| Oh...Sir! The Insult Simulator Vile Monarch · Released | PC, Mac, Linux, Android, iOS | Simulation | 24 October 2016 | 6 |
| OK K.O.! Let's Play Heroes Capybara Games · Released | PC, PS4, Xbox One | Action, RPG, Fighting | 31 March 2018 | — |
| Okabu Hand Circus · Released | PS3, PSN | Puzzle | 18 October 2011 | — |
| Okami Clover Studios · Released | PS2, Wii, PS3 | Action, Adventure | 2007 | — |
| Okami HD Clover Studios · Released | PS3, PS4, Xbox One, PC, Nintendo Switch | Action, Adventure | 30 October 2012 | 9 |
| Okami Sequel Clovers | — | Adventure | TBA | — |
| Okamiden Capcom · Released | Nintendo DS | Adventure | 17 March 2011 | 8 |
| Okhlos Coffee Powered Machine · Released | PC, Mac, Linux | Action, Strategy | 17 August 2016 | — |
| Old Man's Journey Broken Rules | PC, iOS, Android, Nintendo Switch | Puzzle, Adventure | — | 9 |
| Old School Rally Frozen Lake Games · Released | PC | Racing | 18 July 2024 | — |
Out in the next three months
September
Orbitals
The Blood of Dawnwalker
Onimusha: Way of the Sword
NBA 2K27
Halloween: The Game
Hot Wheels: Infinite Rush