Xenophobe aliens have infested a number of space stations. It is your job to infiltrate the space stations and destroy the aliens. You can enlist the aid of a friend for split-screen cooperative play.
The game may be played at one of four different difficulty levels. In your first mission you must clear a space station that only has a single floor. Subsequent missions take place on stations with additional floors that are accessed through a central elevator.
The Xenophobe aliens are constantly mutating into several forms. They begin as small crawling critters or egg pods. Eventually they can grow into tough Snotterpillars that spit harmful phlegm at you.
The players start out armed with low powered Phasers. While exploring the space station more powerful weapons may be found. These include grenades, a quick firing laser pistol, and a Poofer Gun that shoots a small cloud of poison gas.
Players gain points by killing aliens and collecting valuable hardware left on the space station. Clearing the station of all aliens will bring bonus points. If the situation appears hopeless, the players can locate the self destruct console to blow up the space station and move on to the next one.