| Date ▴ | A-Z ▴ | |
|---|---|---|
| 2023 | Operation: Black Mesa | |
| 2023 | Operation: Harsh Doorstop | |
| 2023 | Orx | |
| 25 January 2024 | Oblivion Override | |
| 17 February 2024 | Overmorrow | |
| 5 March 2024 | Outlast Trials, The | |
| 15 March 2024 | Out of the Park Baseball 25 | |
| 15 March 2024 | Outcast: A New Beginning | |
| 26 March 2024 | Outpost: Infinity Siege | |
| 28 March 2024 | One Last Breath | |
| 28 March 2024 | Open Roads | |
| 12 April 2024 | One Last Dinner | |
| 12 April 2024 | Our Adventurer Guild | |
| 19 April 2024 | Once a Tale | |
| 25 April 2024 | Oriental Valley | |
| 6 June 2024 | Oedipus/Antigone | |
| 2024 | Occupy Mars: The Game | |
| 2024 | Oddventure | |
| 2024 | One-Eyed Likho | |
| 2024 | Outbreak Island | |
| 2024 | Outer Worlds 2, The | |
| 2025 | OD | |
| 2025 | Outward 2 |