| Abbreviation | Definition |
|---|---|
| MMGN | My Media Gaming Network |
| MMJ | More More Jump |
| MMM | Marine Marauder Medivac |
| MMOAG | Massively Multiplayer Online Action Game |
| MMOG | Massively Multiplayer Online Game |
| MMORPG | Massive Multiplayer Online Role Playing Game |
| MMORPG | Massive Multi-player On-line Role-Playing Game |
| MMORPG | Massively Multiplayer Online Role Playing Game |
| MMORPGs | Massively Multiplayer Online Role-Playing games |
| MN | Minecraft |
| MOA | Mark Of Athena - Heros of Olympius |
| MOA | Mercenaries Of the Alliance |
| MOAB | Massive Ornery Air Blimp |
| MOB | Man Or Beast |
| MOBA | Multiplayer Online Battle Arena |
| MOC | Monthly Original Character |
| MOE | Master Of Eternity |
| MOG | Multiplayer On-line Game |
| MOM | Miserable, OP, Monster |
| MON | The Money Of Nations |