I was confused at first but when i find out what to do it was a great experience, its great to see a tower defense game here, I wasn't expecting xD.
The art style is good, I like it, it all fits into this style, the game feels light, it all runs well, the sounds its good, one of my favorite entrys, and maybe one of the winners!
Btw, I think maybe there could be a better way to use the limitation, I think the only thing the game lacks its this part, but overall one of the best here!!
Also I think it could be more balanced, but this is a one person game so bonus points for that!!