Game System
- Magic: the Gathering1
- Magical Kitties Save the Day1
- Master of Wills1
- Masters of Orion1
- Mega Civilization1
- MegaMan1
- Memoir 441
- Metamorphosis Alpha1
- Middle-earth CCG (by Iron Crown Enterprises)1
- Miseries & Misfortunes1
- Miskatonic University: The Restricted Collection1
- Mission to Planet Hexx1
- Mission: Red Planet1
- Monster Conquest: Pocket RPG1
- Monsterhearts1
- Mordheim City of the Damned Skirmish1
- Mouse Cheese Cat Cucumber1
- Mutant Year Zero1
- My Little Pony Deck-Building Game1
- Mythos1