Fun, but maybe needs a difficulty setting? I lost the first time I played, then I got the hang of it and it was too easy.
Also, the upgrade maxes seem to be broken... Max Manapool shows when it is the max, but the other options still look like they can be upgraded, but they can't. For example, I guess unit range is maxed when it says that the next level cost 640.
I love the flying knights!
The anvil is the best weapon with its duration and movability for many combo kills. Fun game though level 30 or so, but got tedious towards the end... I only played to level 50 to get the badge.