| Coin-op Misc. game |  Missile | 1969 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. |  Missile Defense 3-D Model 8001 | 1987 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Mister Viking Model 834-5383 | 1984 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mogitate SegaSaturn Vol. 2 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mogitate SegaSaturn Vol. 3 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mogitate SegaSaturn Vol. 4 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mogitate SegaSaturn Vol. 5 | 1998 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mogitate SegaSaturn Vol. 6 | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Mogu Rapper | 1999 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Moldorian - Hikari to Yami no Sister Model G-3422 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Monaco GP Cockpit model | 1979 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Monaco GP Cocktail model | 1979 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega SG-1000 game | Monaco GP Model G-1017 | 1983 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Monaco GP Slimline model | 1979 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Monaco Starlet | 1966 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game |  Monita to Rimoko no Head On Channel | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Master System cart. | Monopoly Model 5500 | 1988 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Monster Bash | 1982 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Gun game | Monster Gun | 1972 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Game Gear cart. | Monster World II - Dragon no Wana Model G-3308 | 1992 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive cart. | Monster World IV Model G-5519 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Monte Carlo | 1971 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Pinball | Monte Rosa | 1977 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega-Tech cart. | Moonwalker Model 40 | 1990 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Moto Champ | 1973 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Moto-Cross | 1976 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Mega Drive 32X cart. | Motocross Championship Model 84600-50 | 1994 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Motopolo | 1968 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Arcade Video game | Motor Raid | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | Motto Pro Yakyu Team wo Tsukurou! Model HDR-0092 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega AI Computer cart. | Mozart Academy Model AI-4056 | 1988 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mr. Bones | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mr. Bones | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mr. Bones Taiken Sample-ban | 1997 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Saturn CD | Mr. Bones Model 81016 | 1996 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Dreamcast GD | MSR - Metropolis Street Racer Model MK-51022-50 | 2000 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Multi-Bell 35 | 195? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Multiple Bell | 195? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Coin-op Misc. game | Murder Lodge | 199? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Sega Pico game | Musical Zoo | 1995 | SEGA Enterprises, Ltd. Tokyo, Japan |
