I guess this game is made so that at some point the level's difficulty will be above your luck, skill and thinking capacity. That means every single time I play a game from this series I end up rage quitting really mad. I had to use my maximum self-control not to rage rate this a 0. Congradz, you are really able to piss me off. You have done great job on that ;) BTW wave 20 is IMPOSSIBRU! XD