| Commodore C64 cass. |  Kobayashi Naru | 1987 | Mastertronic, Ltd. UK 012967 |
| Amstrad CPC cass. | Kobayashi Naru Model IA 0159 | 1987 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Kobyashi Naru Model IS 0159 | 1987 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | KP Skips Action Biker with Clumsy Colin | 1985 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 disk | Kromazone | 1987 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | L.A. SWAT | 1986 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Lap of the Gods Model IS0122 | 1986 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 disk | Las Vegas Gambling Machine Simulator, The | 1986 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Las Vegas Video Poker | 1986 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 disk | Las Vegas Video Poker Casino | 1986 | Mastertronic, Ltd. UK 012967 |
| Amstrad CPC cass. | Las Vegas Video Poker Model USAA0113 | 1986 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Laserwheel | 1987 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 disk | Last V8, The | 1985 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Lawn Tennis | 1988 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Level 5 Model IS 0219 | 1987 | Mastertronic, Ltd. UK 012967 |
| Amstrad CPC cass. | Leviathan Model IA 0306 | 1987 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Loco-Motion Model IS 0070 | 1985 | Mastertronic, Ltd. UK 012967 |
| Amstrad CPC cass. | Locomotion | 1985 | Mastertronic, Ltd. UK 012967 |
| Videoton TVC disk | Locomotion | 1985 | Mastertronic, Ltd. UK 012967 |
| Atari 400/800 disk | Los Angeles SWAT | 1986 | Mastertronic, Ltd. UK 012967 |
| Atari 400/800 disk |  Los Angeles SWAT + Panther | 1988 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Magic Carpet | 1984 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Magic Carpet Model IS 0042 | 1985 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum+3 disk | Magic Knight Trilogy | 1988 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Majik | 1988 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Majik Model IS 0277 | 1988 | Mastertronic, Ltd. UK 012967 |
| Amstrad CPC cass. | Manic Miner | 1984 | Mastertronic, Ltd. UK 012967 |
| MSX cass. | Master Chess | 1987 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 disk | Master Chess | 1987 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Master Chess | 1987 | Mastertronic, Ltd. UK 012967 |
| Atari 400/800 disk | Master Chess | 198? | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Master Chess Model IS0147 | 1987 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Master of Magic Model MAD 17 | 1986 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 disk | Master of Magic, The | 1985 | Mastertronic, Ltd. UK 012967 |
| Amstrad CPC cass. | Masterchess Model IA0147 | 1987 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum+3 disk | Mastertronic +3 Compilation Disk 4 | 19?? | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Maze-Maker | 1984 | Mastertronic, Ltd. UK 012967 |
| Commodore C64 cass. | Megaplay Vol. 1 | 1988 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Megaplay Vol.1 | 1988 | Mastertronic, Ltd. UK 012967 |
| IBM PC 5.25in. disk | Metropolis | 1987 | Mastertronic, Ltd. UK 012967 |
