High Quality Content by WIKIPEDIA articles! Aliens vs. Predator: Requiem is a video game exclusively for the PlayStation Portable, developed by Rebellion Developments and published by Sierra Entertainment in November 2007 in North America and Europe, and December 2007 in Australia. It is an entry in the Alien vs. Predator franchise, an amalgamation of the Alien and Predator franchises. Aliens vs. Predator: Requiem is a tie-in to the film of the same title, which was released shortly after the game.