Question: Who created the film franchise that became basis for the crossover science fiction first-person shooter computer game franchise developed by Rebellion Developments along with "Alien?" 
Sentence (from "Marathon 2: Durandal"): The game is mostly set on the fictional planet of Lh'owon, homeworld of the S'pht, and once again the player takes the role of a Security Officer from the "Marathon".
Relevant evidence: No