Here's an almost 10 year old teaser for a live action halo orientated film. There had been news about this film as earlier as 2005. It was due to be directed by Neill Blomkamp, who would later direct District 9, and produced by Peter Jackson who is responsible for Lord of the Rings. What a shame this script passed about different studios and was eventually dropped and is still waiting to be picked up
They should make a movie of "killzone" as well but the best movie of a game is still "hitman" in my opinion.. A movie closest to the game story.