Plot: Mermaid Madness is an action-adventure game developed by Soft Design and published by Electric Dreams Software for the Amstrad CPC, Commodore 64, and ZX Spectrum in 1986. Wikipedia
Plot: The Astonishing Adventures Of Mr Weems And The She Vampires is a video game developed by RamJam Corporation in 1987. The game is loosely based upon the 1985 Atari Games arcade title Gauntlet. Wikipedia
Plot: Mission Omega is a computer game published in 1986 by Incentive Software for the ZX Spectrum, Commodore 64 and Amstrad CPC home computers. It was programmed by Stephen Ward. Wikipedia
Plot: Mad Planets is a multidirectional shooter released in arcades in 1983 by Gottlieb. The player controls a spaceship which can be moved and rotated independently to fend off angry planets and moons attacking from all directions. Wikipedia
Plot: Molecule Man is an isometric 3D action-adventure video game released by Mastertronic in 1986 for a variety of 8-bit home computers. A level editor is included which enables the player to design their own mazes. Wikipedia
Plot: Marsport is a science fiction computer game that was released for the ZX Spectrum and Amstrad CPC home computers in 1985. It was published by Gargoyle Games in the United Kingdom and Dro Soft in Spain. Wikipedia
Plot: Mindfighter is a text adventure game developed by British studio Abstract Concepts and published by Activision in 1988 for the Commodore Amiga, Commodore 64, Amstrad CPC, Amstrad PCW, Atari ST, MS-DOS, and the ZX Spectrum computers. Wikipedia
Plot: Macadam Bumper is a computer pinball construction set developed by ERE Informatique in France. It was first released for 8-bit computers in 1985, the Atari ST in 1986 and MS-DOS in 1987. The ST and PC versions were released in the US as Pinball Wizard in 1988 by Accolade. Wikipedia