Companies
- Marvelous Entertainment Inc.
- Marvelous, Inc.
- Massive Entertainment
- Massive Monster
- Max Inferno
- Maxis
- MDHR
- Media Molecule
- Mediatonic
- Melbourne House
- Mercury Steam Entertainment
- Meridian4
- Meta
- Microbird
- Microids
- Microsoft
- Microsoft Studios
- Midnight City
- Midway
- MiHoYo Limited
- Milestone
- Mimimi Games
- MintRocket
- Mistwalker
- Mobius Digital