The year is 2012. A team of U.S. scientists returns from Mars with a small, metallic object - the first hard proof that life exist beyond our planet.

Rushed to a top secret underground facility, through a maze-like series of hallways and test chambers, the object is secured in the lowest level laboratory - at the end of Corridor 7.

Subjected to gamma radiation, the sphere explodes - transformed into a radiating gateway, linking our world with another. An army of creatures emerges from the pulsating vortex. The Alien Invasion has begun.

You are a Special Forces Agent, sent to eliminate all invaders, floor by floor - by whatever means possible. Wage a ferocious battle through the overrun military base and reach your destination. Down Corridor 7 looms the fate of the entire human race.

• Enhanced Wolfenstein 3D Engine

• Full Screen Action

• Alien & Advanced Military Weapons

• Morphing Aliens with Extended Death Scenes

• 30  Floors of Heart-Stopping Terror

• Transparent & Animated Walls

• Heads-Up Display

• Infra-Red & Night Vision

• Spine-Tingling Stereo Sound

• 4 Difficulty Levels

• Diminished Lighting Effects