Buggy. Red towers don't attack half the time. Other than that, great game. 3 Stars until fixed. Then it will be 5. Yes, aggravation is worth two stars.
Good game with huge potential. I agree that it needs an upgrade mechanic and some mission variety. Multi-player would also be awesome, but I won't hold my breath on that bit.
hate the apprentice. I do a regular two-star hunt that should take five minutes and instead the apprentice shows up and it takes my rank 1 mana scholars 40 minutes to take him down.