Abandonware games beginning with letter C sorted by rating

Commander Keen 5: The Armageddon Machine is a science fiction action oriented platform game designed by Tom Hall, developed by id Software and released by Apogee Software in 1991 for DOS only. Commander Keen 5: The Armageddon Machine is part of the Commander Keen game series, specifically it's the second episode of Commander Keen in Goodbye, Galaxy.

Conquests of Camelot: The Search for the Grail is an old DOS point and click adventure game designed by Christy Marx, developed and published by Sierra On-Line in 1990. As the title implies, Conquests of Camelot setting is based on the Arthurian legends.

Crusader is an action-oriented computer game. The player controls a super soldier that defects from the current world government and joins the Resistance. The world is shown in an isometric view.