| MuchoBestoStudio | Developer | |
| MuchosWaffles | Developer | |
| Muciojad | Developer | |
| MuckGames | Developer | |
| Mucky Foot | Developer | |
| Mucky Foot Productions | Developer | |
| Mud Duck Productions | DeveloperPublisher | |
| Mud Duck ProductionsNA | Publisher | |
| Muddyfunster | Developer | |
| Mudvark | Developer | |
| Muffin | Developer | |
| Muffyn | Developer | |
| Mugen | DeveloperPublisher | |
| Mugiartes | Developer | |
| Mugs Games | Developer | |
| MuhamedGalal | Developer | |
| Muhammad H. Albayati | Developer | |
| MuhammadAdilGahalta | Developer | |
| Muit | Developer | |
| Mujo Games | Developer | |
| Mukul Negi | Developer | |
| Mulawa Dreaming | DeveloperPublisher | |
| Mulberg | Developer | |
| Mulham Raee | Developer | |
| Mulholland | Developer | |
| Mulligamez | Developer | |
| Multicort | Developer | |
| Multima | Developer | |
| Multimedia Content | Publisher | |
| Multimedia Intelligence Transfer | Developer | |
| Multiplayer Slasher | Developer | |
| Multiplex Games | Developer | |
| MultisoftJP | Publisher | |
| Multithreaded Games | Developer | |
| Multivarious | Developer | |
| MultiwoldGames | Developer | |
| Mults | Developer | |
| Mumb0 | Developer | |
| Mumblejum | Developer | |
| MumboJumbo | DeveloperPublisher | |
| MumboJumbo, LLC | Publisher | |
| Mumimumi | Developer | |
| Mundane | Developer | |
| Mundane Games | Developer | |
| Mundfish | DeveloperPublisher | |
| Munguía | Developer | |
| Muniu | Developer | |
| Munkiewunk63 | Developer | |
| Munro | Developer | |
| Munsie | Developer | |