Way too easy and unbalanced. Upgrading your initial mana actually makes the game more difficult, upgrading mana regen all the way caused me to end up with a full screen of maxed dragons and about 600k mana that I couldn't use. The enemies are too weak, the mana system makes it even easier, and the evil ultimates are pathetic. This game is a disappointment coming from the maker of Epic War
You should make it so that the turrets aren't so stupid, it's annoying that whether or not you can kill all the enemies in the first few levels on hard is based purely on luck.
The monsters on the final stage that send you back to the beggining aren't hard, it's just annoying to have them there. They aren't really needed and should be removed.
It's a decent game but the bosses are way to hard and it's difficult to kill the first few waves of fliers. I also had an odd glitch where I placed a fire tower and it disappeared when the next wave came.