| getit | Maker | Status | Projects | Rating | Lang | Years | Additional Comments |
| - | M'Soft | ? | 1 CD | - | de | 1994 | - |
| - | Magna Media | ? | 19 CDs | - | - | 1994-1998? | - |
 | Magnetic Fields URL | Active | 13 Games, 3 CDs | 88% | en | 1989-1994? | The racing heroes from Magnetic Fields have brought us games like 'Lotus', 'Super Cars' and racing sims on the PC. |
| - | Manfred Möws | ? | 2 CDs | - | - | 1994 | - |
| - | Manyk | ? | 2 Games, 2 CDs | 68% | - | 1995-1996? | - |
| Marble Eyes URL | Active | 1 Game, 1 CD | 46% | en | 1998 | Have created the outstanding 3D shooter 'Genetic Species'. |
| Mark Stanley URL | Active | 1 Website, 1 CD | - | en | 1995? | - |
| Marksoft URL | Active | 9 Games, 2 Tools, 1 CD | 45% | - | 1995-1996? | Polish software developer. |
| Markt & Technik URL | Active | 6 Games, 16 Tools, 1 CD | 30% | de | 1988-1994? | Traditional german software company. |
| Max Design URL | Active | 8 Games, 2 CDs | 63% | de | 1991-1995 | Anno 1602 - their biggest hit! |
| Maxis URL (part of Electronic Arts) | Active | 14 Games, 1 Reference, 1 CD | 77% | en | 1989-1994? | The company behind the 'Sim' Series (Sim City, Sim Earth, The Sims etc.) |
| - | Maxon | ? | 9 Tools, 1 CD | - | - | 1994-1996? | - |
| - | Mecomp | ? | 2 CDs | - | - | ? | - |
| - | Media Team | ? | 6 CDs | - | - | 1993-1994? | - |
| Media Verlag URL | Active | 8 Games, 17 Tools, 1 Website, 1 CD | 47% | de | 1991-1998? | Creators of some Amiga games. |
| - | Megagem | ? | 1 CD | - | - | 1995 | - |
| - | Merit Software | ? | 6 Games, 2 CDs | 58% | - | 1989-1992? | - |
| - | Michael Friedrich | ? | 1 Tool, 2 CDs | - | - | 1996? | - |
| - | Michael Meshew | ? | 14 CDs | - | - | 1994-1995? | - |
| - | Michael-Haupt | ? | 2 CDs | - | de | 1996-1998 | - |
| - | Micro R&D | ? | 5 CDs | - | - | 1994? | - |
| - | Micro Value (formerly sublabel of Microprose) | Dead | 4 Games, 1 Reference, 1 CD | 67% | - | 1987-1988? | - |
| - | Microdeal | Dead | 19 Games, 4 Tools, 3 CDs | 65% | - | 1986-1992? | - |
| Microids URL | Active | 16 Games, 1 CD | 60% | fr,en | 1988-1994? | From Microids are coming heart-pounding games like 'Nicky Boum' or 'Amerzone'. |
| - | Micromania Software | ? | 2 Games, 1 CD | 58% | - | 1993? | - |
| Microprose URL (featuring Micro Value / Micro Style / Spectrum Holobyte) | Active | 36 Games, 6 References, 6 CDs | 80% | en | 1987-1995? | Simulation specialists who can also make great strategy games. |
| - | Microvalue | ? | 1 CD | - | - | 1993 | - |
| - | Millennium (formerly called Logotron) | Dead | 27 Games, 1 Reference, 11 CDs | 71% | - | 1990-1994? | - |
| Mindscape URL (featuring Capstone / The Software Toolworks) | Active | 34 Games, 1 Demo, 2 References, 14 CDs | 64% | en | 1986-1995? | Mindscape publishes a variety of entertainment software products under the SSI, Red Orb, and Mindscape brands, including Myst, Chessmaster, Prince of Persia 3D, Panzer General 3D Assault, and Creatures 3. |
| - | Mirage | Dead | 4 Games, 1 CD | 72% | - | 1992-1994? | - |
 | Mirko Geuther MAIL | Inactive | 23 CDs | - | de,en | 1993-1995? | - |
| - | Mirrorsoft | Dead | 7 Games, 2 CDs | 63% | - | 1987-1990? | - |
| - | Motion Studios | ? | 1 CD | - | - | ? | - |
| - | Music Machine | ? | 21 CDs | - | - | ? | - |
| - | Mythos Game Ltd. | ? | 1 CD | - | - | 1994 | - |
| getit | Maker | Status | Projects | Rating | Lang | Years | Additional Comments |
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