It's damn good. Have you watched it?
But the ending was so fucking EXPECTED man. Ok, if I simply rate it as a movie, I give it a 8/10 because there is original concept and the CG was not bad. I won't give it full marks because, as I said, the ending fucking sucks. It's damn not cool.
However, if I PERSONALLY rate it, I give it full marks for concept and originality. And also because there's Fanning.