Solid tower defense game :) Was easy to pick up and figure out what was going on. The biggest problem I had was that the computer punch upgrade/repair minigame felt like it could go on for quite a while at times, but it's possible I was doing something wrong. I also sorta found myself wishing the energy indicator on the right would display the amount of energy that would be used when placing a building in red instead of just removing that amount of energy from the bar the moment you pick up the building. I really liked the satisfying pop sound that the enemies made when they died. Great job!