| Abbreviation | Definition |
|---|---|
| MGC | Midwest Gaming Classic |
| MGC | Mississippi Gaming Commission |
| MGC | misteer gaming clan |
| MGCB | Michigan Gaming Control Board |
| MGE | Mohegan Gaming & Entertainment |
| MGE | Mohegan Gaming Entertainment |
| MGE | My Gaming Edge |
| MGH | Matt Gaming High |
| MGLV | MeGaLoVania |
| MGN | Mature Gaming Network |
| MGP | Multi Gaming Platform |
| MGRR | Metal Gear Rising: Revengeance |
| MGW | Master of Gaming World |
| MH | Map Hack (video) |
| MH2 | Monster Hunter 2 |
| MHRD | Microhard |
| MIGC | Monkey Island Gaming Clan |
| MIKI | Mine Kill Flail |
| MISSINGNO | Missing Number |
| MJ | Mystic Jin |