Play Corridor 7: Alien Invasion Online

Corridor 7: Alien Invasion is a first-person shooter released in 1994 for MS-DOS. Developed and published by Capstone Software, the game is built on an enhanced version of the Wolfenstein 3D engine. The narrative is set in a near-future scenario where a mysterious artifact recovered from Mars triggers an alien incursion within a secret underground research facility known as Corridor 7.

Players assume the role of a Special Forces agent tasked with descending into the facility's depths to confront the alien threat. The primary objective across the game's thirty levels is to eliminate every hostile entity on each map, rather than simply locating an exit. Gameplay involves navigating maze-like corridors and rooms, engaging in combat with various alien types using an arsenal of futuristic weaponry. Key systems include the use of an automap for navigation and environmental features such as transparent and animated textures, with distance shading adding to the visual presentation.

The game was released in two distinct editions. The standard disk version contains the core thirty-level campaign. An expanded CD version adds ten extra single-player levels, introducing new weapons and alien variants. This edition also includes multiplayer functionality, supporting up to twelve players in Deathmatch and Team Deathmatch modes across eight dedicated maps. In these modes, players can select from a roster of twelve different characters, including human and alien models, each with minor variations in starting health and movement speed but sharing the same available weapons.