Corridor 7

Corridor 7: Alien Invasion is a first-person shooter computer game developed and published by Capstone Software. It was widely ignored for its outdated Wolfenstein 3-D engine technologically surpassed by Doom. more...

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A sequel Corridor 8: Galactic Wars was planned, but was cancelled.

Plot

Excerpt from the Corridor 7 manual:

\"Earth's fighting days were believed to be over. Most of America's military funds were now being directed towards research and space exploration. In 2012, Dr. Donald Fox, a U.S. exobiologist on one of the first manned missions to Mars returned with a metallic object taken from an area near one of Mars' curious face-like formations. It was the first hard proof that life existed outside Earth's solar-system. Scientists were elated, but the government, ever so cautious, removed the artifact to an underground research facility called Delta Base. Delta Base, a small weapons development and research centre located in the Nevada desert, is the only facility equipped to test such an object. The object was taken to the lowest level, a maze-like series of hallways and test chambers, to the laboratory known as Corridor 7.

The age of the object was impossible to determine. Most scientists believed it to be ancient, but it showed no traces of its age and its surface could not be sampled, even at a molecular level. The standard battery of tests were issued. In the back of the chamber the object was subjected to varying levels and types of radiation. During the Gamma phase of tests, the object began to change...\"

As a result a dimensional gate (the Vortex) is opened in the midst of Corridor 7, allowing an army of alien invaders to reach Earth. The aliens quickly overrun the military base and took its control killing everyone. While the creatures are busy modifying the surroundings to better suit their needs, but before they can effectively cut off Delta Base from the rest of the world, a lone Special Forces soldier is able to penetrate their perimeter: his objective will be to stop the invasion and destroy the artifact.

Gameplay

The player takes control of the lone soldier who has infiltrated the alien invaded military base. Corridor 7 is not organized in episodes. Instead, there are 30 (floppy disk version) or 40 (CD version) levels to explore plus 6 more bonus levels. The gameplay slightly differs from that of most FPS games because the player, rather than finding an exit surviving the various enemies scattered around, is tasked with the duty of killing the aliens present on the level. Once this objective is achieved he will be granted access to the next floor of the base through a lift which is also the starting point of each level. The skill setting selected when starting the game influences the percentage of aliens that need to be eliminated:

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