| Mikkorama | Developer | |
| Miklo | Developer | |
| Miko Sramek | Developer | |
| MikoDaVinz | Developer | |
| Mikoishi | Developer | |
| Mikonow | Developer | |
| Mikro-Gen | Publisher | |
| MikyAnimates | Developer | |
| Mil Feirn | Developer | |
| Milamber | Developer | |
| Milania22 | Developer | |
| Milbus | DeveloperPublisher | |
| Mild Beast Games | Developer | |
| MildSession | Developer | |
| Mildegard | Developer | |
| Mile 300 Computer Services | Publisher | |
| MileStone | Publisher | |
| MileStone Inc. | DeveloperPublisher | |
| MilekHippy | Developer | |
| Miles | Developer | |
| Miles Computing | DeveloperPublisher | |
| Miles Matrix (formerly known as m3g1dd0) | Developer | |
| Miles Mouse | Developer | |
| Miles Wind | Developer | |
| Milestone | DeveloperPublisher | |
| Milestone Inc. | DeveloperPublisher | |
| Milestone Interactive | Developer | |
| Milestone S.r.l | Developer | |
| Milestone s.r.l | Developer | |
| Milestone s.r.l. | DeveloperPublisher | |
| Milestone srl | DeveloperPublisher | |
| Military Simulations Inc. | DeveloperPublisher | |
| Milk Soft | DeveloperPublisher | |
| MilkBoy | Developer | |
| MilkGallery | Developer | |
| MilkTeaStudios | Developer | |
| Milkbag Games | DeveloperPublisher | |
| Milkbar Lads | Developer | |
| Milkcha | Developer | |
| Milkstone Studios | DeveloperPublisher | |
| Milkteebaby | Developer | |
| Milky Cherry | Developer | |
| Milky Tea Studio | Developer | |
| Milky Tea Studios | DeveloperPublisher | |
| Milky Team | Developer | |
| Millenium Interactive | Publisher | |
| Millennial Games | Developer | |
| Millennium Interactive | DeveloperPublisher | |
| Millennium Interactive Ltd. | DeveloperPublisher | |
| Millennium Kitchen | Developer | |
| Millennium Media Group | Developer | |
| Millimedia Games | Developer | |
| Million | Developer | |
| Million Co., Ltd. | Developer | |
| Million Corp. | Developer | |
| Millo Games | DeveloperPublisher | |
| Mills1 | Developer | |
| Milo Games | Developer | |
| Milo Smiley | Developer | |
| MiloMyth | Developer | |
| MiloSoft | Developer | |
| Miloush | Developer | |
| Milrock15 | Developer | |
| Miltage | Developer | |
| Milton Bradley Company | Publisher | |
| Mily | Developer | |
| Mimi Chiu | Developer | |
| Mimic | Developer | |
| Mimimi Games | Developer | |
| Mimimi Productions | Developer | |
| MimmoO | Developer | |
| MimounKECHE | Developer | |
| Min Communications | DeveloperPublisher | |
| Min Lii | Developer | |
| MinaKhalil | Developer | |
| Minakuchi Engineering | Developer | |
| Minato Giken | Developer | |
| Minato Soft | DeveloperPublisher | |
| Minato Station | DeveloperPublisher | |
| Minatojc | Developer | |
| Minavas | Developer | |
| Mind Candy | Developer | |
| Mind Control Software | Developer | |
| Mind Echoes | Developer | |
| Mind Games | Publisher | |
| Mind Games España | DeveloperPublisher | |
| Mind Games Software | Publisher | |
| Mind Palace | Developer | |
| Mind Shear Software | Developer | |
| Mind's Eye | Developer | |
| Mind's Eye Games | DeveloperPublisher | |
| Mind's Eye Productions | Developer | |
| Mind's Eye Software | Developer | |
| Mind's Eye Software (Jim Gardner) | Developer | |
| Mind's Eye Software (Jim Gardner, David Whittaker) | Developer | |
| Mind's Eye Software (Jim Gardner, Julian Wood, J. Dave Rogers) | Developer | |
| Mind's Eye Software (Matt Furniss) | Developer | |
| MindArk | DeveloperPublisher | |
| MindFuse Games | DeveloperPublisher | |
| MindGames Entertainment | Developer | |