Kinda cheating to call the Spirits Within a video game movie. It was titled Final Fantasy but was a wholly unique story and new characters and everything.
Most video game movies probably shouldn't directly translate the source game, since what works in a game and what works in a movie are so different.
And to be fair, most films based on other media don't directly translate their source material either. Oh sure, novel based films do, but most comic book movies seem to have plots written specifically for the movie, with elements from various comic issues mixed in. And most based on TV series usually have new stories too.
