Wow
This far, far exceeded what I expected in a tower defense game. Where to begin? The menus and submenus are all beautifully done. They look really tasteful, and are functional and appropriate. The levels map was a great idea as well. I didn't realize the game had a save feature either, which is awesome. The first map I played was pretty cool. Everything was easy to understand right away, and really makes me want to keep playing. The graphics are all really good looking and the animation seems flawless.
The sounds are all appropriate and the music isn't annoying either. What more can I say? The game just looks beautiful, and functions just as well. 10/10. Keep up the good work.