From Wikipedia: Keen travels to the Vorticon homeworld in search of the mysterious Grand Intellect that has directed the Vorticons toward Earth. The game features the cities, parks, and suburbs...

An excellent but hardly-known sim, Conflict achieves what it sets out to be in the title: a political simulation of age-old conflicts in the turbulent middle east.

One of Tomahawk / Coktel's few action games, Cougar Force is a decent platform game starring you as member of Cougar Force, an elite commando team.

Similar to Access' early Tex Murphy adventures, Countdown has an incredible amount of "pixel-hunt" puzzles and several pointless "arcade" sequences.

Have you ever wanted to work for the CIA? Infiltrate the KGB? Black-mailpeople into becoming double agents? If you answered yes to any of the preceding then Covert Action is...

Crack Down is a decent conversion of SEGA's Mega Drive/Genesis top-down shooter.

Arcade-style action game by Access Software - very "inspired" (to put it mildly) by the coin-op game Narc.

Crown is a nice oldie platformer by the chaps from StarByte.

The precursor to highly successful Isharseries, Crystals of Arborea's story is Waterworld meets AD&D: as prince of Arborea, last refuge in the submerged world, embark on a quest to find...

Trixter bashes this marginally underrated game so well at MobyGames that I'd like to quote it verbatim (and yes, I agree with him 100%): "Cybergenic Ranger bears my dubious title...