Companies starting with M
- Machinegames
- Mad Head Games
- Made Up Games
- MADFINGER Games
- Madison Karrh
- Madmind Studio
- Madnetic Games
- MAGES
- Maitan69
- Majesco Entertainment
- Majesco Europe
- Majestic Studios
- Major League Gaming
- Majorariatto
- Manalith Studios
- Manticore Games
- Maple Powered Games
- Marvel
- Marvel Games
- Marvel Studios
- Marvelous
- Marvelous AQL
- Marvelous Entertainment Inc.
- Marvelous Europe
- Marvelous USA
- Marvelous, Inc.
- Maschinen-Mensch
- Massive Black
- Massive Entertainment
- Massive Monster
- Mastertronic
- Masthead Studios
- Mastiff
- Matrix Games
- Matt Thorson
- Mattel
- Matthias Linda
- Maverick Games
- Max Inferno
- Maximum Entertainment
- Maximum Games
- Maxis
- Mayhem Studios
- Mechanistry
- Media Molecule
- Mediatonic
- MegaCat Studios
- MegaCrit
- MegaWobble
- Melbourne House
- Melting Parrot
- Meowza Games
- Mercury Steam Entertainment
- Merge Games
- Meridian4
- Messhof
- Meta
- Metalhead Software
- Metanet Software
- Meteor Entertainment
- Mi-Clos Studio
- Microbird
- Microids
- Microprose
- Microsoft
- Microsoft Studios
- Midas Interactive Entertainment
- MidBoss
- Midjiwan AB
- Midnight City
- Midnight Munchies
- Midnight Society
- Midway
- Might and Delight AB
- Mighty Coconut
- Mighty Eyes
- Mighty Kingdom
- MiHoYo Limited
- Mike Bithell
- Mike Singleton
- Milestone
- Milestone Games
- Milky Tea
- Mimimi Games
- Mindscape
- MinMax Games
- mino_dev
- Minor Key Games
- MintRocket
- Mirage Game Studios
- Miro Haverinen
- Mischief
- Mister Morris Games
- Mistwalker
- Mithril Interactive
- Mizoriot Creative Company
- MNKY
- Mobius Digital
- mod.io
- Mode 7 Games
- Modern Wolf
- Modus Games
- Mohawk Games
- Mojang
- Mojiken Studio
- Mojo Bones
- Molasses Flood
- Molton Games
- Mommy's Best Games
- Monkiato
- Monolith
- Monolith Productions
- Monolith Soft
- Monomi Park
- Monoprice
- Monster and Monster
- Monster Couch
- Montech
- Moon Lagoon
- Moon Studios
- Moonana
- Mooncube Games
- Mooneye Studios
- MoonHood
- Moonloop Games
- Moral Anxiety Studio
- Mossmouth
- Most Wanted Entertainment
- Motiga
- Motion Twin
- Motive Studio
- Mouldy Toof Studios
- Mountain Sheep
- Mountaintop Studios
- Moving Pieces Interactive
- MSCHF Product Studios
- MSI
- MuHa Games
- MumboJumbo
- Mundfish
- Mushkin
- MWM Interactive
- My Games
- Myco
- Mythic Entertainment
- MythicOwl
- MyTona