since they always need a C compiler, even when the source code is
completely in C++.
For some other packages, stated in the comment that a C compiler is
really not needed.
Space Racer is a 3D car racing game. The circuit is a road in a galactic
environment. It aims to be a clone of the well known Stunt Car Racer
developped by Geff Crammond, author of Grand Prix I and II.