Not bad Firstly, it's entertaining.
This is the type of movie to be enjoyed with a cold drink, while having company over. This movie is light and unpretentious, although it does contain a few plot twists.
Regarding the bad reviews...
I think the problem with this type of movie is that the superhuman movie market is almost tapped out and highly demanding.
The strategy game could've been explained better. They hinted at it, but with 10 minutes more, I think it could've been a much more memorable movie.
The prison setting was interesting.
The social implications of a portion of the population gaining superpowers was explained briefly, but they could've lingered more there.