Alien³: The Gun is a 1993 rail shooter arcade game released by Sega. It is based on the film Alien³, but focuses on two space Marines.
Plot[]
One or two players can take the role of a pair of United States Colonial Marines in an altered version of the film's storyline. The action begins with an escape from the spaceship Sulaco before proceeding to the surface of Fiorina 'Fury' 161, where players must take down hordes of Aliens as well as an army of Weyland-Yutani Corporation troops sent to retrieve specimens by any means necessary.
Levels are based on sets from the film and take players through the Mess Hall, Infirmary, Lead Works and more. The game ends when the players defeat the unidentified man, only to be met with more troops.