Group
- Mile High Game Guys2
- Miles & Miles of Fun28
- Miles and Miles of Fun70
- Milestone Play11
- Mill River Films1
- Millennium Interactive Gaming34
- Millennium Interactive Gaming and Mongoose Publishing2
- Miller Stitch Designs4
- Milwaukee Gamers Alliance5
- Milwaukee Magi-Nation League11
- Mind Melt Games1
- Mind Sports Olympiad2
- Mind Storm Labs124
- Mind the Gap Studios32
- Mind's Eye Chronicle3
- Mind's Eye Society20
- Mind's Eye Society & The Wrecking Crew27
- MindIsle Games1
- MindLint Gaming1
- Mindclash Games12