| QuantumYT | Developer | |
| Quantum_Martin | Developer | |
| Quantumd | Developer | |
| Quarium Inc. | Developer | |
| Quarter Onion Games | Developer | |
| Quartzified Studios | Developer | |
| Quasar Soft | DeveloperPublisher | |
| Quasar47 | Developer | |
| Quasar85 | Developer | |
| QuasarTech | Developer | |
| Quaseymoto | Developer | |
| Quaternion Studio | Developer | |
| Quazar Studio | Developer | |
| Qube Software | Developer | |
| QubicGames | DeveloperPublisher | |
| Que Bab Studios | Developer | |
| Queasy Games | Developer | |
| Queen Bee Games | Developer | |
| Queen Nebula | Developer | |
| Queen Soft | DeveloperPublisher | |
| QueenCraft Studios | Developer | |
| Queenship Game Studio | Developer | |
| Queerklancing | Developer | |
| Queksmar | Developer | |
| Quela Reyes | Developer | |
| Queledonio | Developer | |
| Quenestil | Developer | |
| Quentin Delvallet | Developer | |
| QuentinDecharneux | Developer | |
| Quentin_Frehring | Developer | |
| Quest | DeveloperPublisher | |
| Quest Corporation | DeveloperPublisher | |
| Quest Inc. | Developer | |
| Quest Software | Developer | |
| Question | DeveloperPublisher | |
| Question Shark Studios | Developer | |
| Questionable Quality | Developer | |
| Questionable Systems | Developer | |
| Quet | Developer | |
| QuetzalGames | Developer | |
| Quichi | Developer | |
| Quickalas529 | Developer | |
| Quickdraw Dev | Developer | |
| Quickfire Games | Developer | |
| QuicksellGames | Developer | |
| Quicksilva | DeveloperPublisher | |
| Quicksilva (Julian Skelly, Andy Brown) | Developer | |
| Quicksilver Software | DeveloperPublisher | |
| QuicksilverSashGames | Developer | |
| Quicktequila | Developer | |
| Quidi | Developer | |
| Quiet Storm | Developer | |
| Quiet as Day | Developer | |
| Quiet2004 | Developer | |
| QuietBenchZen | Developer | |
| Quiet_Steps | Developer | |
| Quill Game Studios | Developer | |
| Quill Studios | Developer | |
| QuinRose | DeveloperPublisher | |
| Quincy9000 | Developer | |
| Quinn | Developer | |
| Quinn K. | Developer | |
| Quinn Stephens | Developer | |
| Quinn_Patrick | Developer | |
| Quinrose | Developer | |
| Quintet | DeveloperPublisher | |
| Quinton Reeves | Developer | |
| Quintuple | Developer | |
| QuintupleA | Developer | |
| Quirkat | Developer | |
| QuirkyBones | Developer | |
| Quit975 | Developer | |
| Quite Good | Developer | |
| QuiverStudios | Developer | |
| Quixel | Developer | |
| Quiz.game | Developer | |
| Quizy0 | Developer | |
| Qulbutokee | Developer | |
| Quotix Software | Developer | |
| Qureate | DeveloperPublisher | |
| Qute | DeveloperPublisher | |
| Qute Corporation | DeveloperPublisher | |
| Quwatzoki | Developer | |
| QwaukStak | Developer | |
| QwertZero_07 | Developer | |
| Qwertiiiiiii | Developer | |
| Qytar_Studios | Developer | |
| R Fred Williams | Developer | |
| R Hill | Developer | |
| R Vessey | Developer | |
| R&B Software | Publisher | |
| R&P Electronic Media | DeveloperPublisher | |
| R&R Software | Publisher | |
| R-Doman | Developer | |
| R-Force Software | Developer | |
| R-K9 | Developer | |
| R-USER Games | Developer | |
| R. Fred Williams | Developer | |
| R. T. Smith | Developer | |
| R. Womak | Developer | |