The idea behind it is nice, but I couldn't attack with my units at all sadly. One thing I noticed as well was the UI placements was really off. In the desc, it said click on the towers to place a certain one and I was only able to do this when I went fullscreen in the browser. So I would suggest you to work on scaling the UI properly and fixing the scripts to allow the units to attack and you have a solid Tower Defense game. Sorry if I sound critical, I just would of loved to try this game out and I seen the ambition here.