| Matthew Goodman | Developer | |
| Matthew Joseph Woolley | Developer | |
| Matthew Koester | Developer | |
| Matthew Kowalski | Developer | |
| Matthew Lance DEV | Developer | |
| Matthew Lawrence | Developer | |
| Matthew Murphy | Developer | |
| Matthew Ng | Developer | |
| Matthew Nicholson | Developer | |
| Matthew R.F. Balousek | Developer | |
| Matthew Redmond | Developer | |
| Matthew Roy | Developer | |
| Matthew S Burns | Developer | |
| Matthew Smith | Developer | |
| Matthew VanDevander | Developer | |
| MatthewEccles | Developer | |
| MatthewLacker | Developer | |
| MatthewLoveday | Developer | |
| MatthewLyons | Developer | |
| MatthewMeade | Developer | |
| MatthewPattel | Developer | |
| Matthewbuy | Developer | |
| Matthewpalaje | Developer | |
| Matthias Aschenbrenner | Developer | |
| Matthias Luedtke | Developer | |
| Matthias Scherba | Developer | |
| Matthias Wullenweber | Developer | |
| Matthieu Riboulot | Developer | |
| MatthieuMignon | Developer | |
| Mattias Mau Lundell | Developer | |
| Mattrified Games | DeveloperPublisher | |
| Matías Paredes | Developer | |
| Matías Schmied | Developer | |
| Mau Delgaudio | Developer | |
| MauRCDart | Developer | |
| Maugrift | Developer | |
| MauiGameStudio | Developer | |
| Mauri Lehtonen | Developer | |
| Maurice's Games | Developer | |
| Mauricio Castillo | Developer | |
| Mauricio Scherer | Developer | |
| Mauro | Developer | |
| Mauro Cristy | Developer | |
| Mauro Daniel Couto Valiente | Developer | |
| Mauro Guarino | Developer | |
| Mauro Leonel Mendoza | Developer | |
| Mauro Vanetti | Developer | |
| Maurog | Developer | |
| Mauve Magician | Developer | |
| Mauzer Games | Developer | |
| Maverick Simulation | Developer | |
| Maverick21 | Developer | |
| MaverickHorn | Developer | |
| Mavish.exe | Developer | |
| Mavryke | Developer | |
| MavvyMakesGames | Developer | |
| MawiTheChihuahuaGod | Developer | |
| Max | Developer | |
| Max Cahill | Developer | |
| Max Code | Developer | |
| Max Design | DeveloperPublisher | |
| Max Design GmbH & Co | Publisher | |
| Max Entertainment | Developer | |
| Max Fefer (HydroForge Games) | Developer | |
| Max Five | DeveloperPublisher | |
| Max Interactive Studio | DeveloperPublisher | |
| Max Kreminski | Developer | |
| Max Krieger | Developer | |
| Max Mallory | Developer | |
| Max Mendieta Games | Developer | |
| Max Mraz | Developer | |
| Max Oakland | Developer | |
| Max Remington | Developer | |
| Max Schmoecker | Developer | |
| Max Stern | Developer | |
| Max W | Developer | |
| Max W. | Developer | |
| MaxAmaden | Developer | |
| MaxBet | DeveloperPublisher | |
| MaxCT6 | Developer | |
| MaxCouling | Developer | |
| MaxDD | Developer | |
| MaxHasVanished | Developer | |
| MaxIndieGames | Developer | |
| MaxM70 | Developer | |
| MaxMcCart | Developer | |
| MaxMitchell | Developer | |
| MaxOn Soft Corp | Developer | |
| MaxStriebel | Developer | |
| MaxTopan | Developer | |
| Maxalo | Developer | |
| Maxb0tbeep | Developer | |
| Maxeaman | Developer | |
| Maxenau | Developer | |
| Maxence Jacquot | Developer | |
| MaxenceM | Developer | |
| Maxfecteau | Developer | |
| MaxiMannor | Developer | |
| Maxim Eylenbosch | Developer | |
| Maxim Karpenko | Developer | |
| 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 | |