MechWarrior 2: 31st Century Combat is a 3D vehicle combat sim game created by Activision and released in 1995 for MS-DOS. It was ported later to Windows and Mac, in addition to the console versions released in 1997.
BattleTech: The Crescent Hawk's Inception is a sci-fi RPG created by Westwood Associates and published by Infocom initially for MS-DOS in 1988, then ported to Atari ST, Apple II, Commodore 64, and Amiga (in 1989).
One Must Fall: 2097, developed by Diversions Entertainment and published by Epic MegaGames in 1994, is set in the future where fighting between humans is outlawed. Of course, humans being who they are, need a way to fight each other.
Thexder is a platform shooter videogame developed by Game Arts and released for DOS, Amiga, Apple II, MSX and several other platforms in 1987. You control a robot that is able to transform into a jet.
VectorMan is a run and gun game developed by BlueSky Software and published in 1996 by Sega for the Genesis and the Sega Mega Drive. The title was also released in compilations of Sega for other consoles.