Could have been better! So, we have another "video game to movie" movie. And "The Rock" is playing a bad guy? OK, I liked the game, I'll give the movie a go.
The best I can say is that it wasn't a complete waste of time, as far as it went it was a fun little monster-fest. The Rock did a credible job as The Sarge, but his transition from plain old Grunt to bad guy was a little heavy handed. One minute he's "kickin' ass and taking' names", the next he's shooting everything that moves, good bad or indifferent.
I did like the monster make-up and FX, they did look pretty cool, and the "first person shooter" sequence was an excellent reminder of the movies origins. By far Karl Urban as Grimm was the star of this movie.
The movie is fun, but the story is a little weak and very predictable. Don't expect too much with this, except to while away an evening and not feel like time is wasted. Enjoy it for what it is, guys killing monsters with BFG's!