How this movie needed to be based upon any game I have no idea, all I can say about it is that my wife and I sat back, decided to ignore the obvious impossibilities and enjoy the movie. Doing that it was a fun time with my wife, however as a Science Fiction writer myself I still cringed more than I every want to admit.

What I will say in critic is something that Asimov and Clarke both agreed upon. "Never ask your reader to disbelieve more than one thing." Whomever wrote this screenplay really badly ignored that warning. Still in all it was a heck of a lot better than anything that the SciFry channel has ever put out.