| Retro-Gaming Connexion | Publisher | |
| Retro64 | Developer | |
| RetroArch | Developer | |
| RetroBoi128 | Developer | |
| RetroDEV | Developer | |
| RetroEpic Software | Developer | |
| RetroExcellent | Developer | |
| RetroGamer | Developer | |
| RetroGears | Developer | |
| RetroHead | Developer | |
| RetroLord120 | Developer | |
| RetroMania Studios | DeveloperPublisher | |
| RetroSouls | Developer | |
| RetroSpaceMan123 | Developer | |
| RetroSteveUK | Developer | |
| RetroValou | Developer | |
| RetroYetiGames | Developer | |
| Retroactivos | Developer | |
| Retrocade Media | Developer | |
| Retrocky Studios | Developer | |
| RetrografX | Developer | |
| Retroguru | DeveloperPublisher | |
| Retroid Interactive | DeveloperPublisher | |
| Retromakes | Developer | |
| Retromaze | Developer | |
| Retronomicon Games Quality | Developer | |
| Retrosaur | Developer | |
| Retrotainment Games | DeveloperPublisher | |
| Retrowax | Developer | |
| Retrowynn | Developer | |
| Retsa Games | Developer | |
| RetsynNL | Developer | |
| Return Null | Developer | |
| Reunion des Musees Nationaux | Publisher | |
| ReunionMacabra | Developer | |
| RevEng | Developer | |
| Reval Indie House | Developer | |
| Revanix | Developer | |
| ReveVoodoo | Developer | |
| Revell | Publisher | |
| Revelplay Interactive | Developer | |
| Reverb Triple XP | Publisher | |
| ReverbInTheVoid | Developer | |
| Reverge Labs | Developer | |
| Reverie Forge | Developer | |
| Reverie World Studios | Developer | |
| ReverseTides | Developer | |
| Revetron | Developer | |
| Reveu Games | Developer | |
| Revistronic | Developer | |