| Handheld game |  Mathemagician | 1980 | APF Electronics, Inc. |
| Handheld game | Mathemagician | 1977 | APF Electronics, Inc. |
| Handheld game | Mattel Classic Basketball Model 07802 | 2001 | Fun 4 All |
| Handheld game | Mattel Classic Football Model 07801 | 2001 | Fun 4 All |
| Handheld game | Mattel Classic Hockey Model 07804 | 2001 | Fun 4 All |
| Handheld game | Mattel Classic Soccer Model 07806 | 2001 | Fun 4 All |
| Handheld game | Maze Game | 1979 | Texas Instruments |
| Handheld game | MC Hammer - U Can't Touch This | 1991 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Mecha Borg Model 046-5035 | 1983 | Masudaya Corp. Japan |
| Handheld game | Mega Man 2 | 1988 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Mega Man 3 | 1991 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Melody Madness | 1980 | GAF |
| Handheld game | Memoquiz | 1978 | MEM Belgium |
| Handheld game | Memory Match Model 60-2122 | 1981 | Tandy Corp. |
| Handheld game | Merlin - The 10th Quest Model 43200 | 1996 | Parker Bros. Beverly, MA, USA |
| Handheld game | Merlin Model 3200 | 1978 | Parker Bros. Beverly, MA, USA |
| Handheld game | Mermaid Model SG-862 | 198? | Sunwing |
| Handheld game | Messenger Monkey Model RC-2011 | 198? | Rosy Electronics |
| Handheld game | Mice Party Model YG-261-A | 198? | Morioka Tokei, Inc. |
| Handheld game | Mickey & Donald | 198? | J.i 21 Jeux et Images du 21e siècle France |
| Handheld game | Mickey & Donald Model DM-53 | 1982 | Nintendo Co., Ltd. Japan |
| Handheld game | Mickey Mouse | 1984 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Mickey Mouse | 1984 | Orlitronic France |
| Handheld game | Mickey Mouse | 198? | Candia |
| Handheld game | Mickey Mouse | 198? | J.i 21 Jeux et Images du 21e siècle France |
| Handheld game | Mickey Mouse - Jungle Daiboken | 198? | Tomy |
| Handheld game | Mickey Mouse - Orange Express | 198? | Tomy |
| Handheld game | Mickey Mouse - The Magical Castle | 198? | Epoch Co., Ltd. Tokyo, Japan |
| Handheld game | Mickey Mouse Model DC-95 | 1984 | Nintendo Co., Ltd. Japan |
| Handheld game | Mickey Mouse Model MC-25 | 1981 | Nintendo Co., Ltd. Japan |
| Handheld game | Micro Chess Challenger | 198? | Fidelity Electronics |
| Handheld game | Mighty Max | 1994 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Mighty Max in Skull Dungeon | 198? | Systema |
| Handheld game | Mikketekids Model 72628 | 1982 | Popy Electronics Japan |
| Handheld game | Milton Model 4043 | 1980 | MB Milton Bradley Co. East Longmeadow, MA, USA |
| Handheld game | Mind Boggler Model 2626 | 1978 | Mattel Electronics Mattel, Inc. |
| Handheld game | Miner 2049er | 1983 | Tiger Electronic Toys, Inc. Orchard Mundelein, IL, USA |
| Handheld game | Mini Backgammon | 198? | Gakken Japan |
| Handheld game | Mini Game Machine | 198? | VTECH Video Technology, Ltd. |
| Handheld game | Mini Game Machine | 197? | House of Games, Inc. Waddingtons Evanston, IL, USA |
