Ender's Game kinda sucked. First off Bonzo shouldn't have been a midget, I think without even a cursory knowledge of the book that it was obvious that Bonzo was supposed to be an older, larger kid who should be able to kick Ender's ass. Also, Bernard and Ender really hated each other, and the movie doesn't do crap to explain that. The first 2/3 of the book is basically battle room scenes, and the strategy in the battle room is part of what really made the book interesting, it seems weird that there were only a couple of scenes dedicated to that part of the story. No Valentine and Peter basically at all. If I had not read the book, then I would have had no idea why Ender hated Peter and loved Valentine. I think this is a rare case where the movie should have been a two-parter. First movie is all about battle school and background story on Ender. The movie ends when Ender meets Mazer Rackham. Second movie is command school alternating with scenes of Demosthenes and Locke, ending with Ender finding the Hive Queen. I think there was more than enough material to make it happen.