| Reactive Entertainment | Developer | |
| Reactor Games | Developer | |
| Ready Wolf | Developer | |
| Ready at Dawn | DeveloperPublisher | |
| ReadySoft | DeveloperPublisher | |
| ReadySoft Incorporated | DeveloperPublisher | |
| ReadySoftNA | Publisher | |
| Reakktor Media GmbH | Developer | |
| Reaktor | Publisher | |
| Reaktör | Publisher | |
| Real Dog Studios | Developer | |
| Real Fantasy Games | Developer | |
| Real Sports | Developer | |
| Real Sports Games | Developer | |
| Real Time Worlds | Developer | |
| Real Vision | DeveloperPublisher | |
| Real World Multimedia | Developer | |
| RealArcade, | Publisher | |
| RealNetworks | Publisher | |
| RealcielO5 | Developer | |
| Realfail | Developer | |
| Realism | Developer | |
| Reality Blind | Developer | |
| Reality Gap | Publisher | |
| Reality Pump | Developer | |
| Reality Pump Studios | Developer | |
| Reality Studios | DeveloperPublisher | |
| RealityCheck Games | Developer | |
| RealityGame | Developer | |
| Really Interesting Software | Developer | |
| Really Interesting Software Company | Developer | |
| Really Long Birds | Developer | |
| RealmOfHuai | Developer | |
| Realmforge Studios | Developer | |
| Realms of Fantasy | Developer | |
| Realsports | Developer | |
| Realsteps game dev | Developer | |
| Realta Entertainment Group | Developer | |
| Realtech VR | Developer | |
| Realtime Associates | DeveloperPublisher | |
| Realtime Associates, Inc. | Developer | |
| Realtime Games | DeveloperPublisher | |
| Realtime Games Software | Developer | |
| Realtime Worlds | Developer | |
| ReaperMaga | Developer | |
| Reasonable Games | Developer | |
| Reasonable Solutions | DeveloperPublisher | |
| Reb | Developer | |
| Rebeca Varea García | Developer | |
| Rebecca | Developer | |