Zarch is the classic Zarch for the Acorn Archimedes. It was maybe
better known as "Virus" on the Commodore Amiga. Linux Zarch is one of
the very few freely available 3D graphics games for UNIX/Linux that
offer very decent performance without needing 3D hardware support.

Game play is still rather simple: fly around a randomly created world
and shoot the alien ships without destroying your homeworld. Your
armament includes a powerful cannon and heat seeking missiles.