Based on the Alien universe and set shortly after the events of James Cameron's 1986 film Aliens, the game follows a group of Colonial Marines, a fictional military unit, as they confront the Weyland-Yutani corporation in an effort to rescue survivors from the Sulaco spaceship. Aliens: Colonial Marines is a 2013 first-person shooter developed by Gearbox Software and published by Sega for Windows, PlayStation 3, and Xbox 360.