| 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 | |
| MxtApps | Developer | |
| My Dog Zorro | Developer | |
| My Next Games | DeveloperPublisher | |
| My Sweet Whomp | Developer | |
| My World | DeveloperPublisher | |
| My.com | Publisher | |
| MyAlias | Developer | |
| MyAtari | Publisher | |
| MyFaceIsShield | Developer | |
| MyHand Studio | Developer | |
| MyOwnGames | Developer | |
| Mycelium Zero | Developer | |
| Mycom | DeveloperPublisher | |
| Myelin Media | Publisher | |
| Mygard Studio | Developer | |
| Mykaelos | Developer | |
| Myllenium Mylene | Developer | |
| Mylstar | Publisher | |
| Mynavi | Developer | |
| Myosuki | Developer | |
| Myoubouh | Developer | |
| Myouya | Developer | |
| Myr0 | Developer | |
| Myrddin Software | Publisher | |
| Myriad | Developer | |
| Myriadim | Developer | |
| Myron | Developer | |
| MyronSA | Developer | |
| Mysda | Developer | |
| Myshkin Entertainment | Developer | |
| Mysli | Developer | |
| Mysterian22 | Developer | |
| MysteriousQ | Developer | |
| Mysteriously Signe ✨ | Developer | |
| Mystery Egg Games | Developer | |
| MysteryMatt | Developer | |
| MysteryPuppy | Developer | |
| Mystic Lantern | Developer | |
| MysticBrewGames | Developer | |
| MysticDolphin | Developer | |
| Mystic_MM | Developer | |
| Mystical_Pidgeon | Developer | |
| Myth Studios | Developer | |
| MythAtelier | Developer | |
| Mythalore | Developer | |
| Mytheria Games | Developer | |
| Mythial Studios | Developer | |
| Mythic Entertainment | DeveloperPublisher | |
| Mythic Owl | Developer | |
| Mythic Owls | DeveloperPublisher | |