| 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 | |