The one thing that threw me off at the end was what looked to me in-world digital dogs that somehow had the ability to tear apart people. I read after the fact that those were actually supposed to be real mutated dogs or something. But the way they set that up, it didn't look like they coming out of an underground kennel so much as appearing like a digital program from the Matrix. And then they started killing people which really threw me off.
Stanely Tucci as Caesar was pretty fun though.
I really didn't like the shaky cam though. I'm not against into principle. I really enjoyed Trolljegeren especially since the shaky cam made sense as the method of viewpoint/ story telling. Shaky cam at the beginning of Hunger especially made no sense as you were basically replacing steady cam panoramic shots for home video shakiness, but it seemed to detract from the movie rather than enhance the story telling.
And shaky didn't really make sense during the Games itself unless they have camera crew hoofing it out behind all the youth. It would have made much more sense to limit the camera shots to where the supposed cameras would be placed.
Also was there a giant forest fire in the book? That seemed a rather expensive way to turn her back if there's a lot of cameras hiding in those trees and those trees aren't growing back anytime soon. Do they find a new site every year? The fires mad more sense in the Truman Show.
Those are probably nitpicky, but they were what broke me out of the story while watching the movie. Beyond that it was pretty decent. I don't think I'd aquire it, but it was worth seeing once.