The game is well made. The trick to all TD games is how much money you initially have and the fast shooting towers. That's what I did used only fast towers and boosted initial money and I have expert on 32 levels.
i agree with parallel and kadmij...you guys are noobs...and i know that word is thrown around alot but anyone who says this game is hard is a pansy. Games for me arent meant to be entertaining their meant to be beat. crusader said it right if your ballz havent dropped yet then dont even play if your not up for the challenge