| Publisher | Games | Geek | Avg |
|---|
| Mainstreet Classic | 1 | — | — |
| Maison J. Battat | 1 | — | — |
| Majestic Twelve Games | 2 | — | — |
| Majora | 46 | 5.41 | 5.39 |
| MaKa Games, LLC | 1 | — | — |
| Makaka Editions | 21 | 5.56 | 6.58 |
| Make Believe Games | 1 | — | — |
| Make Your Move, Inc. | 1 | — | — |
| Maki A/S | 3 | — | — |
| Makimpex 2000 Kft. | 1 | — | — |
| Mako | 3 | — | — |
| Mal Hijo Games | 1 | — | — |
| Mál og menning | 2 | — | — |
| Malabares | 1 | — | — |
| Maldito Games | 486 | 6.39 | 7.30 |
| Maldón | 42 | 5.98 | 6.73 |
| MaliModi Game Labs | 1 | — | — |
| Malinche Games | 2 | — | — |
| Mallegory | 1 | — | — |
| Malso Games | 1 | — | — |
| Mamopalire, Inc. of Vermont | 1 | — | — |
| Mamute Jogos | 2 | — | — |
| Man O' Kent Games | 2 | — | — |
| Man-indo | 7 | 5.97 | 6.51 |
| Mana Project Studio | 1 | — | — |
| Manawaker Studio | 1 | — | — |
| Manaworks Games LLC | 1 | — | — |
| Mancalamaro | 72 | 6.09 | 6.77 |
| Manchester United Football Club | 1 | — | — |
| Mandala Jogos | 44 | 6.03 | 6.72 |
| Mandino | 1 | — | — |
| Mandoo Games | 182 | 5.96 | 6.67 |
| MANGROVE GAMES | 2 | — | — |
| Manhattan Agencies | 7 | 5.36 | 5.55 |
| Mani Industries Ltd | 1 | — | — |
| Manifest Destiny | 13 | 5.64 | 6.67 |
| Manikmaya Games | 2 | — | — |
| Mann, Ivanov, and Ferber (MIF) | 3 | — | — |
| Mannix Co, LTD | 1 | — | — |
| Mantic Games | 31 | 5.66 | 7.38 |
| Mantikore-Verlag | 3 | — | — |
| Manuel Gimenez Reyna | 1 | — | — |
| Manufactum | 1 | — | — |
| Maple Games | 4 | — | — |
| Maple Toys | 4 | — | — |
| Maplegrove | 3 | — | — |
| Maqui Board Games | 2 | — | — |
| Mar Lúdico | 19 | 6.07 | 6.58 |
| Marabout | 1 | — | — |
| Marabunta | 13 | 6.59 | 7.27 |
| Maranda Games | 5 | 5.51 | 5.91 |
| Marbiru LLC | 1 | — | — |
| Marbles: The Brain Store | 13 | 5.63 | 5.91 |
| Marbury Works | 1 | — | — |
| Marbushka | 2 | — | — |
| Marc Piqué Reg. | 1 | — | — |
| Marc Vidal | 1 | — | — |
| March Hare Games | 1 | — | — |
| Marchant | 6 | 4.93 | 4.29 |
| Marflow Games | 12 | 5.59 | 7.08 |
| Margam Evans Limited | 1 | — | — |
| Margaret Weis Productions, Ltd. | 2 | — | — |
| Margrave Games | 1 | — | — |
| Marigó | 12 | 5.50 | 5.24 |
| Marina Games | 1 | — | — |
| Marion Co., Inc. | 1 | — | — |
| Mariposa Games | 2 | — | — |
| Mariucci J. Designs, LLC | 5 | 5.88 | 7.89 |
| Mark IV Games | 1 | — | — |
| Mark Steere Games | 23 | 5.48 | 4.63 |
| Markee Games | 1 | — | — |
| Märklin & Cie | 1 | — | — |
| Marks & Spencer | 13 | 5.37 | 4.91 |
| Marlboro | 1 | — | — |
| Marrow Production | 1 | — | — |
| Mars | 1 | — | — |
| MARS GAMES | 1 | — | — |
| Mars International | 1 | — | — |
| Marshal Enterprises | 8 | 5.57 | 7.82 |
| Martell Cognac | 1 | — | — |
| Martin Fritz | 1 | — | — |
| Martinex | 26 | 5.77 | 6.14 |
| Martínez Roca | 1 | — | — |
| Marty.Games | 1 | — | — |
| MARU. | 2 | — | — |
| Maruca Industries | 3 | — | — |
| MARUKAWA CONFECTIONERY CO., LTD. | 1 | — | — |
| Marvel Entertainment | 3 | — | — |
| Marx Toys | 14 | 5.40 | 5.12 |
| Mary Flanagan LLC | 2 | — | — |
| Masbro | 1 | — | — |
| Masenghini | 4 | — | — |
| Masilow | 1 | — | — |
| MasoGames | 2 | — | — |
| Masquerade Games | 1 | — | — |
| Mass Games | 3 | — | — |
| Massif Games, LLC | 1 | — | — |
| Massive Asterisk | 1 | — | — |
| Massive Monster | 1 | — | — |
| Master Ion Sdn. Bhd. | 1 | — | — |
