Corridor 7: Alien Invasion is a computer game based on the Wolfenstein 3D engine that was published by CapStone in 1994. It was widely panned for its outdated engine and poor gameplay. A sequel Corridor 8: Galactic Wars was planned, but got cancelled. A computer game is a game composed of a computer-controlled virtual universe that players interact with in order to achieve a defined goal or set of goals. ... Wolfenstein 3D (commonly abbreviated to Wolf 3D) is the computer game that started the first person shooter genre on the PC. It was created by id Software and published by Apogee Software on May 5, 1992. ... 1994 was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ...

Story

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 equiped 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...