I love a good tower defense game. I was very impressed with it and it made me want to try my hand at one.
The difficulty ramped up quickly, and you don't get money until the end of the level for killed zombies which means if your strategy is wrong, you're going to lose and have to start over at wave 1. It also would have been nice to know that clicking places turrets and that there's only one. Though I figured it out in the end.
Solid game overall.