| Madskull Creations | DeveloperPublisher | |
| MaduVenancio | Developer | |
| Mady974 | Developer | |
| Mae | Developer | |
| MaelP. | Developer | |
| Maelstrom Games | Developer | |
| Maelstrom Games (Chris Pink, Paul Rowbotham, Mike Singleton) | Developer | |
| Maelstrom GamesMike Singleton | Developer | |
| Maelstrom Software | Developer | |
| Maestro Interactive | DeveloperPublisher | |
| Maewyn Red | Developer | |
| MafazGamer | Developer | |
| Mafuta Games | Developer | |
| MagBo | Developer | |
| Magellan Interactive | Developer | |
| MagellanicGames | Developer | |
| Magenta Software | Developer | |
| Magenta Triptech Productions | Developer | |
| Magenta-Puppy | Developer | |
| Magentaautumn | Developer | |
| MagerTrash | Developer | |
| Mages | DeveloperPublisher | |
| Maggese | Developer | |
| Magic Ball's Knights | Developer | |
| Magic Bytes | DeveloperPublisher | |
| Magic Cat | Developer | |
| Magic Circle Software | Developer | |
| Magic Circle Studio | Developer | |
| Magic Design Studios | DeveloperPublisher | |
| Magic Duck Studio | Developer | |
| Magic Electronics | Publisher | |
| Magic Frame Studios | DeveloperPublisher | |
| Magic Hand (Jose Luis Correa Munoz) | Developer | |
| Magic Lemon Software | Developer | |
| Magic Magpie Games | Developer | |
| Magic Notion | Developer | |
| Magic Pixel | DeveloperPublisher | |
| Magic Pixel Games | Developer | |
| Magic Pockets | DeveloperPublisher | |
| Magic Post Box (Laurent Noel, LOG) | Developer | |
| Magic Sandbox | Developer | |
| Magic Spell Studios | DeveloperPublisher | |
| Magic Touch | Developer | |
| Magic Wand Productions | Developer | |
| Magic Workshop | Developer | |
| MagicDoogies | Developer | |
| MagicEngineering | Developer | |
| MagicFountain | Developer | |
| MagicManPrime | Developer | |
| MagicPillow | Developer | |
| MagicTrick | Developer | |
| Magical | Developer | |
| Magical Company | DeveloperPublisher | |
| Magical Company (Mahou) | DeveloperPublisher | |
| Magical CompanyJP | Publisher | |
| Magical Craft | Developer | |
| Magical Formation | Developer | |
| MagicalTimeBean | Developer | |
| MagicalZoo | DeveloperPublisher | |
| Magicbane | Developer | |
| Magicfish Studio | Developer | |
| Magicland Dizzy | DeveloperPublisher | |
| Magicom Multimedia | Publisher | |
| Magicsoft | Developer | |
| Magictech Studio | Developer | |
| Magifact | DeveloperPublisher | |
| MagikTopHatt | Developer | |
| MagincianCompany | Developer | |
| Magitech | Developer | |
| MagmaProd | Developer | |
| Magn | Developer | |
| Magna Carta Software | Publisher | |
| Magnatales Games | Developer | |
| Magnega | Developer | |
| Magnes | Developer | |
| Magnesium Ninja | Developer | |
| Magnet Team | Developer | |
| Magnetic Fields | Developer | |
| Magnetic Images | DeveloperPublisher | |
| Magnetic Realms | DeveloperPublisher | |
| Magnetic Scrolls | DeveloperPublisher | |
| Magnetic Scrolls (Phil Snout, John Molloy) | Developer | |
| Magnificent 7 Software | Publisher | |
| Magnin & Associates | Developer | |
| Magnin and Associates | Developer | |
| Magno de Morais | Developer | |
| Magnolia | DeveloperPublisher | |
| Magnus Games | Developer | |
| Mago | Developer | |
| Magpie Collective | Developer | |
| Magpie Computer Developments Ltd | Developer | |
| Magpie Studios | Developer | |
| Magus24 | Developer | |
| Mahdi Fanaei | Developer | |
| Mahdianto Production | Developer | |
| Mahjoub | Developer | |
| Mahmood J | Developer | |
| Mahmoud_Official | Developer | |
| Mahorova | Developer | |
| Mahou | DeveloperPublisher | |
| Mahou Shoujo ☆ Magical Moestar | Developer | |
| MahouJP | Publisher | |
| Mai | Developer | |
| Maibbit | Developer | |
| MaikoEntertainment | Developer | |
| Mail.ru | Developer | |
| Main Tank Software | Developer | |
| MainMacree | Developer | |
| Mainc | Developer | |
| Maingron | Developer | |
| Mainichi Communications | DeveloperPublisher | |
| Mainichi Communications Inc | Developer | |
| Maitai Entertainment | Developer | |
| Maithonis | Developer | |
| MajamiLTU | Developer | |
| Majao Games | Developer | |
| MajdAbdulqadir | Developer | |
| Majesco | Publisher | |
| Majesco Entertainment | DeveloperPublisher | |
| Majesco Entertainment (North America) | Publisher | |
| Majesco EntertainmentAU,NA | Publisher | |
| Majesco EntertainmentNA | Publisher | |
| Majesco NA | Publisher | |
| Majesco Sales | DeveloperPublisher | |
| Majestic Studios | Developer | |
| Majestic Twelve | Developer | |
| MajesticLamb | Developer | |
| Majid Games | Developer | |
| Majikeyric | Developer | |
| Majlo | Developer | |
| Major Developments | Developer | |
| Major Developments (Chris Andrews, Paul Gregory, Stephen Northcott) | Developer | |
| Major Developments (Ian Andrew, Chris Andrew, Stephen Northcott) | Developer | |
| Majorariatto | Developer | |
| Mak_Makers | Developer | |
| Mak_Sensei | Developer | |
| Makashinga | Developer | |
| Make | Developer | |
| Make Play Code | Developer | |
| Make Soft | DeveloperPublisher | |
| Make Software | DeveloperPublisher | |
| Makena Technologies | Developer | |
| Maker Hacks | Developer | |
| Maker School | Developer | |
| Makh-Shevet | DeveloperPublisher | |
| MakhamDev | Developer | |
| Makhor | Developer | |
| Maki | Developer | |
| Makin'Games | Developer | |
| MakinGames | Developer | |
| Making | DeveloperPublisher | |
| Making Art Studios | Developer | |
| Making English Fun | Developer | |
| MakioKuta | Developer | |
| Makmie | Developer | |
| Mako | Developer | |
| Makooti | Developer | |
| Makoto Serise | Developer | |
| MakovWait | Developer | |
| MaksGams2012 | Developer | |
| MaksimPralat | Developer | |
| Maksim_Ivanovich | Developer | |
| Maksymillian | Developer | |
| Makura | DeveloperPublisher | |
| Makyzz | Developer | |
| Mal | Developer | |
| MalBen | Developer | |
| Maladiv Studio | Developer | |
| MalakTheDevil | Developer | |
| Malakai | Developer | |
| Malakriss | Developer | |
| Malaso | Developer | |
| MalboM | Developer | |
| Malbroye | Developer | |
| Malcerne | Developer | |
| Malcolm E Evans | Developer | |
| Malcolm Evans | Developer | |
| Malcolm J Smith | Developer | |
| Malcolm Michael | Developer | |
| MalcolmMacDonald | Developer | |
| Maldonacho | Developer | |
| Malerouille | Developer | |
| Malfador Machinations | DeveloperPublisher | |
| Malgavis | Developer | |
| Malgios | Developer | |
| Malheur Games | Developer | |
| Malibu Games | DeveloperPublisher | |
| Malibu Games NA | Publisher | |
| Malibu Interactive | Developer | |
| MaliceDiary | Developer | |
| Malimoul | Developer | |
| MalinWong | Developer | |
| Malinche Entertainment | DeveloperPublisher | |
| Malisa | Developer | |
| Malkin8 | Developer | |
| MalkyStuffs | Developer | |
| Mallace | Developer | |
| Mallander | Developer | |
| Mallard Software | Publisher | |
| Malmberg | Publisher | |