| Maxim Loboda | Developer | |
| Maxima | DeveloperPublisher | |
| Maxime Chaize | Developer | |
| Maxime Monast | Developer | |
| Maxime Piquot | Developer | |
| Maximiliano Garcia | Developer | |
| Maximum Crash | Developer | |
| Maximum Family Games | Publisher | |
| Maximum Games | DeveloperPublisher | |
| Maxine Red | Developer | |
| Maxis | DeveloperPublisher | |
| MaxisNA | Publisher | |
| Maxistentialism | Publisher | |
| Maxkiki | Developer | |
| Maxmagix | Developer | |
| Maxoun456 | Developer | |
| Maxtopia | Developer | |
| Maxussss | Developer | |
| Maxwell Technology (David Jones, Nick D'Mahe, Matt Black) | Developer | |
| Maxwell Umeshinon | Developer | |
| MaxwellSalmon | Developer | |
| May Barros | Developer | |
| May Gardens | Developer | |
| May-Be Soft | DeveloperPublisher | |
| MayBeTall | Developer | |
| MayTea Games | Developer | |
| Maya | Developer | |
| Maya Bloem | Developer | |
| Maya Games | Developer | |
| MayaMint | Developer | |
| Maybe Great | Developer | |
| Maybe Soft | DeveloperPublisher | |
| MayerBryan | Developer | |
| Mayfly Studio | Developer | |
| Mayhem Makers | Developer | |
| MayhemmGameDev | Developer | |
| Maynemotions Studios | Developer | |
| Mayo | Developer | |
| MayoMods | Developer | |
| Maytch | Developer | |
| Mayur Games | Developer | |
| Maz | Developer | |
| Maz H Spork | Developer | |
| Maze Theory | Developer | |
| Mazena | Developer | |
| Mazenneyous | Developer | |
| MazzutakGame | Developer | |
| Maëlys Jusseaux | Developer | |
| Maître Pantoufle | Developer | |
| Maÿllis | Developer | |
| Mbastos_artes | Developer | |
| Mbzneto | Developer | |
| McFennec | Developer | |
| McFlyboy | Developer | |
| McGnoll | Developer | |
| McKenna Sanderson | Developer | |
| McLean | Developer | |
| McLeodGaming | DeveloperPublisher | |
| McMike Bros. | Developer | |
| McNichols | Developer | |
| McSassblast | Developer | |
| McShooterz | Developer | |
| Mcchuiegame | Developer | |
| Mcfli | Developer | |
| Mcportugalem | Developer | |
| Mcsully18 | Developer | |
| Me Dicen Boga | Developer | |
| MeCoderStudios | Developer | |
| MeDungeon Ltd. | DeveloperPublisher | |
| MeHigh | Developer | |
| MeIzAwezomeDede | Developer | |
| MeKaiDen | Developer | |
| MeLikePixels | Developer | |
| MeMakingGames | Developer | |
| MeMyselfandDie | Developer | |
| MeViPortal | Developer | |
| MeaLynk | Developer | |
| Meadow Faust | Developer | |
| Meadow Games | Developer | |
| Meadows | Publisher | |
| Meadows Games | Publisher | |
| Meagan Byrne | Developer | |
| Meagan Trott | Developer | |
| Mean Mutt Studio | Developer | |
| Means Interactive | DeveloperPublisher | |
| Meanwhile Games | Developer | |
| Meat pies | Developer | |
| Meatbaby | Developer | |
| Meatballmars2002 | Developer | |
| Meatpie | Developer | |
| Meaty Okra Games | Developer | |
| Mebio Software | Developer | |
| Mebius | DeveloperPublisher | |
| Mecano Associates | Developer | |
| MechBird | Developer | |
| MechOrg | Developer | |
| MechScapeZH | Developer | |
| Mecha Studios | Developer | |
| MechaLag | Developer | |
| MechaPoetic | Developer | |