| | Mary Shelley's Frankenstein | 1994 | Sega | frankst | | 0.00 |
| | Mary Shelley's Frankenstein (Germany) (clone of: frankst) | 1995 | Sega | frankstg | | 0.00 |
 | Masao (clone of: mario) | 1983 | bootleg | masao | Platform / Run Jump | 0.00 |
 | Masked Riders Club Battle Race | 1993 | Banpresto / Toei | kamenrid | Driving | 7.00 |
| | Maski Show (Russia) (Extrema) | 1969 | Extrema | maski | | 0.00 |
| | Master Boy (Italian, PCB Rev A) (clone of: mastboy) | 1991 | Gaelco | mastboyi | | 0.00 |
| | Master Boy (Spanish, PCB Rev A) | 1991 | Gaelco | mastboy | | 6.00 |
| | Master Club (Bellfruit) (Scorpion 1) | 1969 | BFM | sc1mast | | 0.00 |
 | Master Ninja (bootleg of Shadow Warriors / Ninja Gaiden) (clone of: shadoww) | 1989 | bootleg | mastninj | | 0.00 |
 | Master of Weapon (Japan) (clone of: masterw) | 1989 | Taito Corporation | masterwj | | 0.00 |
| Master of Weapon (US) (clone of: masterw) | 1989 | Taito America Corporation | masterwu | | 0.00 |
| Master of Weapon (World) | 1989 | Taito Corporation Japan | masterw | Shooter / Flying Vertical | 7.50 |
| | Masterspy (Pcp) | 1969 | JPM | j80mster | | 0.00 |
 | Mat Mania | 1985 | Technos Japan (Taito America license) | matmania | Wrestling | 6.84 |
| | Mata Hari | 1978 | Bally | matahari | | 0.00 |
| | Matador (unknown) (MPU4?) | 1969 | | m4matdr | | 0.00 |
| | Match '98 (ver. 1.33) | 1998 | Amcoe | match98 | | 0.00 |
| | Match It | 1989 | Tamtex | matchit | Puzzle / Match | 6.00 |
| | Match It (JPM) (MPS) | 1969 | JPM | j2match | | 0.00 |
| | Match It II | 1993 | Tamtex | matchit2 | | 1.00 |
