| Rosaita W | Developer | |
| Rosden Shadow | Developer | |
| Rose | Developer | |
| Rose Arcana Games | Developer | |
| Rose City Games | Publisher | |
| Rose Mountain Games | Developer | |
| RoseSoup | Developer | |
| Rose_Guardian | Developer | |
| Rosequartzklein | Developer | |
| Roseto | Developer | |
| Roseverte | Developer | |
| Rosewater Games | Developer | |
| Rosie_Mable | Developer | |
| Rosin Entertainment | Developer | |
| Ross | Developer | |
| Ross Grams | Developer | |
| Ross Harris | Developer | |
| Rossman Bros Games | Developer | |
| RosstheBoss0 | Developer | |
| Rotagg | Developer | |
| Rotating Pyramid | Developer | |
| RotemEshet | Developer | |
| Rothers | Developer | |
| Rotobee | Developer | |
| Rotorcross | Developer | |
| Rotorist | Developer | |
| RottaGod_X | Developer | |
| RottenFish | Developer | |
| Rotten_games | Developer | |
| RotundMammoth | Developer | |
| Roucasse | Developer | |
| Rough Skin | Developer | |
| Rough Trade | Publisher | |
| Rough Trade (PlayStation 2 game designer)Rough Trade | Publisher | |
| Rouhana | Developer | |
| Roukurai | Developer | |
| Rouli | Developer | |
| RoundHouseStudios | Developer | |
| RoundOwlGames | Developer | |
| RoundTableStudio | Developer | |
| RourkeBywater | Developer | |
| Rousingaker | Developer | |
| Route 1 Games | Developer | |
| Route 59 | DeveloperPublisher | |
| Route 59 Games | Developer | |
| Route24 | Developer | |
| Route5Games | Developer | |
| Roveldo | Developer | |
| Rovio Entertainment | DeveloperPublisher | |
| Row' | Developer | |