| Abbreviation | Definition |
|---|---|
| MCPE | Minecraft Pocket Edition |
| MCPE- | Minecraft Bedrock/Pocket Edition Bug |
| MCSM | MineCraft Story Mode |
| MCSM | Minecraft: Story Mode |
| MCU | Minecraft Ultimate |
| MCYTTWTSMP | Minecraft YouTuber Twitter Survival Multiplayer |
| MD | More Damage |
| MD | Mystery Dungeon |
| MDRG | Mutants and Death Ray Guns |
| ME3 | Mass Effect 3 |
| MEGA | Msi Entertainment And Gaming Appliance |
| MEGA | Msi Entertainment Gaming Appliance |
| MEGS | Mobile Entertainment Gaming System |
| MFC | Marvelous Full Combo |
| MG | Meta Gaming |
| MG | Mystic Gohan |
| MG1 | Master Guardian 1 |
| MG1 | Master Guardian 1. A rank is Counter-Strike: Global Offensive |
| MGA | Master Gaming Association |
| MGC | Massachusetts Gaming Commission |