Well, simply put, htis is the best movie EVER made. I've seen alot of movies, and none of them even come close to this!!
The story, though, is basically the same as the game, with the exclusion of the Stigma, known better here as Geostigma. DON'T LET ANYONE FOOL YOU INTO BELIEVING THIS IS A BAD MOVIE!!!! Most people say it's a bad movie because it has no storyline, it does have a storyline, a shortened and edited version of the game's, and because of the fact that it's edited, it IS different than the game's storyline. A certain artist set this rule, I forget his name, though, he said "If you even slightly change somehting, it's different than the original."
On terms of graphical power, the most impressive graphics I've ever seen, nearly everything looks real, and you can't even begin to tell it's CG work!! Unlike that crap-box office failure, The Spirits Within. But, that may be because that movie is several years old, while AC is newer than that movie.