Gearbox Software and Sega are finally ready to show off Aliens: Colonial Marines. They announced the first details today on the first-person shooter, which will arrive on the PC, PS3, and Xbox 360 in Spring 2012.

In Aliens: Colonial Marines, players lead a United States Colonial Marines on an investigation of the U.S.S. Sulaco. The Sulaco is a ship found in orbit around LV-426. It seems abandoned at first but the Marines will soon discover it's crawling with deadly aliens known as Xenomorphs.

LV-426 and the U.S.S. Sulaco were, if you're not aware, locations from the film Aliens. Through the course of the campaign players will also visit the colony Hadley's Hope from the film. Many of the weapons seen in the movie will make an appearance as well.

Colonial Marines will be on display at Sega's booth at E3 next week. The game's first teaser trailer is below.