| 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 | |
| MurGonBol | Developer | |
| Murasakigame | Developer | |
| Murilo Trigo | Developer | |
| MuriloDev | Developer | |
| Murkje | Developer | |
| Murman | Developer | |
| Muro Studios | DeveloperPublisher | |
| Murphie_Whinstock | Developer | |
| Murray Campbell | Developer | |
| Murray Krehbiel | Developer | |
| MuruiGames | Developer | |
| MuscularHair | Developer | |
| Muse Games | DeveloperPublisher | |
| Muse Software | DeveloperPublisher | |
| Musesoft | Developer | |
| Museworthy | Developer | |
| Mush | Developer | |
| Mushi | Developer | |
| Mushin Games | Developer | |
| Mushroom Canopy | Developer | |
| MushroomCourt | Developer | |
| Mushy Dev | Developer | |
| Mushy Jukebox | Developer | |
| MusiCard | Developer | |
| Music Pen | Developer | |
| MustacheLincoln | Developer | |
| MustacheSkulls | Developer | |
| MustachioGames | Developer | |
| Mustafa Alnsour | Developer | |
| MustafaAkyazici | Developer | |
| Musthegreat | Developer | |
| Musumeya | DeveloperPublisher | |
| Mutan | DeveloperPublisher | |
| Mutant Productions | Developer | |
| Mutated Software | DeveloperPublisher | |
| Mute Fantasies | DeveloperPublisher | |
| Muteki Corporation | DeveloperPublisher | |
| Mutive | Developer | |
| Mutt Games | Developer | |
| MuuMuu | Developer | |
| Muutsch | Developer | |
| Muuush | Developer | |
| Muzt Die Studios | Developer | |
| Muzzy Lane | DeveloperPublisher | |
| Muzzz29 | Developer | |
| MvP Studios | Developer | |
| Mx Leno | Developer | |
| MxAshlynn | Developer | |
| Mxdara | Developer | |
| MxhxmxdIII | Developer | |