This is honestly - and I say this without the slightest of sarcasm - one of my favorite games this generation. Admittedly, the mechanics are average at best, but the premise of turning enemies into allies is like a modern game of Othello.
If you liked Psi-Ops or Second Sight from last generation, it's worth checking out.
I wouldn't quite go as far to say it even deserves to be mentioned in the same breath as Second Sight (which was absolutely amazing and still the most underrated game of last gen), but it's definitely something different in this boring gen of Zombie FPS and fitness games.
The problem with Mindjack is the story and acting is absolutely WRETCHED. Completely ruins what is an insanely innovative gameplay concept.