| Rocket Studios | Developer | |
| Rocket Vulture | DeveloperPublisher | |
| Rocket01666 | Developer | |
| RocketPandaStudio | Developer | |
| RocketPunch | Developer | |
| RocketPunch Games | Developer | |
| Rocket_Juice | Developer | |
| Rocketcat Games | DeveloperPublisher | |
| Rocketlex | Developer | |
| Rocketship Park | Developer | |
| Rockfish Games | DeveloperPublisher | |
| Rockhead Studios | DeveloperPublisher | |
| Rockin' Android | Developer | |
| RockingDyde! | Developer | |
| Rockingham Softwares | DeveloperPublisher | |
| Rockpile Games | Developer | |
| Rockpool Games | Developer | |
| Rocksoft | Developer | |
| Rockstar Canada | Developer | |
| Rockstar Games | DeveloperPublisher | |
| Rockstar Games NA | Publisher | |
| Rockstar GamesEU,NA | Publisher | |
| Rockstar GamesNA | Publisher | |
| Rockstar GamesNA,PAL | Publisher | |
| Rockstar Leeds | Developer | |
| Rockstar London | Developer | |
| Rockstar New England | Developer | |
| Rockstar North | Developer | |
| Rockstar San Diego | Developer | |
| Rockstar Studios | DeveloperPublisher | |
| Rockstar Toronto | Developer | |
| Rockstar Vancouver | Developer | |
| Rockstar Vienna | Developer | |
| Rocksteady Studios | Developer | |
| Rocky | Developer | |
| Rocky Mountain Software | Publisher | |
| Rocky Studio | Developer | |
| Rockyh | Developer | |
| Rocío Tomé | Developer | |
| Rod Ashley | Developer | |
| Rod Bowkett | Developer | |
| Rod J. Swift | Developer | |
| Rod Pike | Developer | |
| RodFireProductions | Developer | |
| Rodaja | Developer | |
| Roden | Developer | |
| Rodent Warriors | Developer | |
| RodentLabs | Developer | |
| Rodeo Games | Developer | |
| Roderick Esquivel | Developer | |
| Rodge Rock Software | Developer | |
| Rodii | Developer | |
| RodionVa | Developer | |
| Rodney Luck | Developer | |
| Rodney McAuley | Developer | |
| Rodolfo Moraes | Developer | |
| Rodolink | Developer | |
| Rodrigo M Demoly | Developer | |
| Rodrigo Rojas-Ferrer | Developer | |
| Rodrigo Souza | Developer | |
| Rodrigo Vieira | Developer | |
| RodrigoOak | Developer | |
| RodrigoPayeras | Developer | |
| RodrigoPraetzel | Developer | |
| Rodrigo_dCG | Developer | |
| Rodrysson | Developer | |
| Roebl | Developer | |
| Roenko Games | Developer | |
| Roey_Shap | Developer | |
| Roger Damon | Developer | |
| Roger Taylor | Developer | |
| Roger Webster and Dan Leviton | Developer | |
| Roggie Gaming | Developer | |
| Rogue Cactus | Developer | |
| Rogue Empire | Developer | |
| Rogue Entertainment | Developer | |
| Rogue Factor | Developer | |
| Rogue Games | Publisher | |
| Rogue Snail | Developer | |
| Rogue Studios | Developer | |
| Rogue Sword: Strategy & Adventure Games | Developer | |
| RogueCode | DeveloperPublisher | |
| RogueMicro | Developer | |
| Rogue_AI | Developer | |
| Roguetoad27 | Developer | |
| Roh | Developer | |
| Rohan Narang | Developer | |
| Rohan17rp | Developer | |
| Rohbert | Developer | |
| Rohifi | Developer | |
| Rohit | Developer | |
| Roilbauk | Developer | |
| RokaWar | Developer | |
| Rokaplay | DeveloperPublisher | |
| Rokapublish | Developer | |
| Rokas | Developer | |
| Rokashi | Developer | |
| Rokay | Developer | |
| RokeDev | Developer | |
| RokiiDoki | Developer | |
| Roklan | Publisher | |
| Roklan[12] | Developer | |
| Rokulasalat | Developer | |
| Rokumendo | Developer | |
| Rolandem | Developer | |
| Roleander | Developer | |
| Rolf Dieter Klein | Developer | |
| Rolf Rothgerber | Developer | |
| Rolinda!!! | Developer | |
| Roll 4 Tarrasque | Developer | |
| Roll&PlayMedusa | Developer | |
| Roll7 | Developer | |
| RollOfFate | Developer | |
| Rolledtunarice | Developer | |
| Rolling Crown | Developer | |
| Rolling Glory Jam | Developer | |
| RollingCarey | Developer | |
| Romain Bayer | Developer | |
| Romain Enselme | Developer | |
| Romain Saclier | Developer | |
| Romain.P | Developer | |
| RomainDnnn | Developer | |
| Roman | Developer | |
| Roman Skowronek | Developer | |
| Roman Uhilg | DeveloperPublisher | |
| Roman Uhlig | Developer | |
| Roman.Sedition | Developer | |
| RomanRobot | Developer | |
| Roman_Games | Developer | |
| Romane Rakotovao | Developer | |
| Romans I XVI Gaming | DeveloperPublisher | |
| Romantic Robot | Publisher | |
| Rombax Games | Publisher | |
| Rombus | Developer | |
| Rome Software | Developer | |
| Rome: Total Realism Team | DeveloperPublisher | |
| Romero Games | Developer | |
| Romik | Publisher | |
| Romik Software | Publisher | |
| Rompkins | Developer | |
| Romstar | DeveloperPublisher | |
| Romstar NA | Publisher | |
| Romulus Software | Publisher | |
| Ron Aldrich | Developer | |
| Ron Gilbert & Gary Winnick | DeveloperPublisher | |
| Ron Harris | Developer | |
| Ron Heuse | Developer | |
| Ron&Yogev | Developer | |
| RonDeBen | Developer | |
| Rona Hattingh | Developer | |