Group
- Lynnvander Inc.12
- M Collective9
- MAMS Gaming6
- MAWGWKCKA2
- MEGA7
- MERCS Minis LLC11
- MHE2
- MMC29
- MU Skulls19
- Machine Age Productions2
- Mantapus Productions1
- Margaret Weis Productions24
- Mattel Games1
- Maxveld Games LLC5
- Mayfair Games681
- MechJock LLC80
- MedievalCookery.com1
- Mid-Hudson Gaming Geeks3
- Milwaukee Gamers Alliance5
- Mind's Eye Society7