ThunderGun: The Cybwar Mission

The year is 2880, and as alien races pillage planet Soran for its massive deposits of anti-gravitational minerals, the planet’s peaceful inhabitants are forced to flee to Earth. Now orbiting the Earth in their floating Sky-City, the Soranians have begun to rebuild the foundation of their once great civilization. But now that peaceful existence is about to be shattered, because from deep within the Earth a new threat has emerged.