Fans of the popular video game are rewarded with the director's cut of this thrilling adaptation, which follows marines on a mission to Mars, where a genetic experiment has produced mutant monsters that wreak havoc on a scientific facility. The Rock, Karl Urban, Rosamund Pike, DeObia Oparei, Ben Daniels, Raz Adoti, Richard Brake, Al Weaver, Robert Russell, Yao Chin, Brian Steele, Dexter Fletcher.