Okay, I felt like I'm in a first person shooter game pretty much for the duration of the movie. I do like the idea behind the movie, but the First Person view ruined it for me to a large degree.
It's okay, but it's not something to shout off the rooftops. The story is jerky and disjointed at times. You do get the gist of what's going on, but the "info" on the screen (from the Head up Display type screen) was quite distracting.
It could have been done much better, and if they'd ditch the first person shooter idea, it could be phenomenal.
If (like me) you get seasick when you play first person shooter games -- this one's not for you.
P.S. I had to type out all the first person shooter etc stuff, because the site decided I was shouting...