By Company
Make a Game Ltd.
Mantic Entertainment Ltd.
Maps of Mystery
Margaret Weis Productions Ltd.
Marvel Enterprises, Inc.
Matrix Games
Mattel
Max Protection
Maxveld Games LLC
Mayday Games
Mayfair Games
McNeill Designs, LLC
Media Blasters
Mind Storm Labs, LLC
MindTwister USA
Minion Games
Miskatonic River Press LLC
Mongoose Publishing
Monolith Graphics
Moosetache Games
Morning Star Games
Morrigan Press Inc.
Mudpuppy Games