Too easy and boring after you improve mana regen, you always win no mather what you do. But I think that you can easely improve the game making it more challenging and adding some rock/paper/scisor relation betwen units so that every unit has a function in the game (now you can win using only one kind of unit).
Ok, today ill try to improve the graphics I already have so that they look better without losing the style. And i´m going to correct the yellow screen bug if I can.
You should charge at paddle´s instead of firing :). Press shift to set your speed to high, crash them, return, and set your spedd to normal or slow again.