Michael Biehn, the actor for Corporal Dwayne Hicks, admitted to only giving a half-hearted performance because he could sense the developers didn't have passion for the project.
The story of the game is somewhat based off of the original concept story of Alien 3 (1992) where Cpl. Hicks and another team of Colonial Marines discover a top secret research facility by Weyland-Yutani that is focused on using the Aliens as Bio-Weapons.
Aliens: Colonial Marines was originally helmed as the official sequel to James Cameron's film Aliens, but after the game's overwhelmingly negative reception its canon status was dropped.
The rather erratic and buggy behavior of the xenomorph AI was the result of a simple typo during coding.
Publisher SEGA and developer Gearbox were sued due to false advertisement. Released demos and screenshots did not match the final game. Although Gearbox was eventually dropped from the suit, SEGA is still being sued for the false advertising.