One of the big complaints about The Golden Compass, was the abrupt ending. Fans of the novel complained that the last few chapters of the book had not been included. And people that never read the book series could sense that something was missing.
Truth is, they were actually filmed more scenes, but they were cut due to running-time. You can even see a bit or two in some of the trailers. And one of the ending scenes shot but not included in the theatrical cut of the movie actually made it into the video game adaptation. Watch the video below.