i've gotten to 27, my main problem is my keyboard sucks, most times i start game ball rolls right off and nothing happens when i push arrow keys, 1/10 of time ball is balanced in middle for first game
i think this is the end of the game for me, i got all the badges but i have 3 maps i am not able to beat in heroic mode so i can't unlock final hidden levels
finally beat it, cool game
it helps to reboot your computer before lvl 25 if you've been playing a lot of games with flash content, my mouse was too unsteady before reboot but afterwards beat it easily
once you get to wizard lvl 32 swarm mode is a great way to increase exp, just make 4 or 5 towers with lvl 2 gems and you are free to do other things while waiting for map to finish
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