| Motquu | Developer | |
| Mottzy | Developer | |
| Motvind Studios | Developer | |
| Mouch | Developer | |
| Mouldy Toof Studios | Developer | |
| Moult | Developer | |
| Mounir Tohami | Developer | |
| MounirDev | Developer | |
| Mountain King Studios | DeveloperPublisher | |
| Mountain Sheep | Developer | |
| Mountains | Developer | |
| MouradZzz | Developer | |
| Mouse Potato Games | Developer | |
| Mouse Systems Corporation | DeveloperPublisher | |
| Mouse123 | Developer | |
| Mousechief | DeveloperPublisher | |
| MoustacheBanana | Developer | |
| Moustafa ELwasif | Developer | |
| Moustave | Developer | |
| Moux | Developer | |
| Mouzone | Developer | |
| Move Interactive | DeveloperPublisher | |
| Movie Battles Team | DeveloperPublisher | |
| Movie Software | Developer | |
| Moving Dimensions | DeveloperPublisher | |
| Moving Pieces Interactive | Developer | |
| Moving Player | DeveloperPublisher | |
| Movisoft | Developer | |
| Mozart | Developer | |
| Mozy | Developer | |
| Mozz | Developer | |
| Mpak | Developer | |
| Mpen | Developer | |
| Mr Bread Games | Developer | |
| Mr Chip Software (Steve Parys, Andrew Morris, Tony Kelly) | Developer | |
| Mr Dino28 | Developer | |
| Mr Frog | Developer | |
| Mr Micro (John May, John White) | Developer | |
| Mr MozaicDev Inc | Developer | |
| Mr Powder | Developer | |
| Mr Rutabaga | Developer | |
| Mr catso mcfatso | Developer | |
| Mr. Arrecis | Developer | |
| Mr. Bagini | Developer | |
| Mr. Gann | Developer | |
| Mr. Heutheer | Developer | |
| Mr. JOPL | Developer | |
| Mr. Kitkat | Developer | |
| Mr. Metal Alex | Developer | |
| Mr. Micro | DeveloperPublisher | |