Plot: XF5700 Mantis Experimental Fighter is a space combat simulator developed by Paragon Software and published by MicroProse under their Microplay Software label for MS-DOS in 1992. Wikipedia
Plot: Millennia: Altered Destinies is a PC game created by Take 2 Interactive in 1995. It casts the player as a human freighter captain who finds himself transported to an alien ship. Wikipedia
Plot: Mines of Titan is a single-player role-playing video game, developed by Westwood Associates, and released by Infocom in 1989 for MS-DOS and Apple II. Wikipedia
Plot: Major Stryker is a 2D vertical scrolling shooter game written for DOS by Apogee Software. Its working title was Strike Force and was released in January 1993. It consists of three episodes, with the first episode distributed as shareware, and the rest available commercially. Wikipedia