Abandonware games beginning with letter C

Castle of the Winds (1993, by Saadasoft) is a perfect example of an atypical roguelike (no ASCII, runs in Windows) turned into a liberated game. Surprisingly Castle of the Winds is still very playable to this day, if you can make it run under a recent version of Windows.

Centurion: Defender of Rome is a turn-based strategy game set in ancient Rome times. As a centurion of the Roman Empire, you will fight against the enemies of Rome in real time battles in every corner of Italy and Europe, you'll be a gladiator, race chariots, fight naval battles and more.