Surprising, Yet it Lacked
Good idea. Good execution...
The main place you lacked was graphics and overall style. I felt you could have put more effort into the actual graphics, lettering, even just the plain old boxes. The other thing that I felt brought this game down was the lack of a tower structure and description. Towers could be placed anywhere and the game lost the traditional strategy involved with tower defenses. The towers themselves had very little description and I basically had to buy to try.