I am not a fan of tower defense game and I enjoyed this A LOT. That says everything. Excellent game. very polished, very balanced, great progression, great theme implementation, everything looks great. You did amazing job. For the feedback on wave 11 and after I started having lag spikes like 1 every 3 waves (too much awesomeness for my browser to handle I guess) and then on level 20+ something the game crashed. (maybe 29 I am not sure), if it helps it crashed right after placing an increase damage root. But overall I loved the game and I would play it again. Congrats!