Companies
- Matt White
- Mattel
- Matthias Linda
- Maverick Games
- Max
- Maximum Entertainment
- Maximum Games
- Maxis
- McDonald's
- McFarlane Toys
- MDHR
- Media Create
- Media Molecule
- Media Vision
- Mediatonic
- MegaCrit
- Melbourne House
- Mercury Steam Entertainment
- Merge Games
- Meridian4
- Messhof
- Meta
- Metanet Software
- Meteor Entertainment
- Mforma
- MGM
- Microids
- Microprose
- Microsoft
- Microsoft Studios
- MidBoss
- Midnight City
- Midway
- Midway Newcastle
- Might and Delight AB
- Mighty Kingdom
- Mighty Rabbit Studios
- MiHoYo Limited
- Mika Mobile
- Mike Bithell
- Mike Singleton
- Milestone
- Mimimi Games
- Mind Candy
- Mindscape
- Mindware Studios
- Minor Key Games
- MintRocket
- Miramax
- Mistwalker