Hey, seems like you might have wrong resolution in the settings, as only part of the screen seems to show up on browser. But hey the downloadable version worked fine!
Anyway so that was quite interesting feature se on a TD game, I really like the resource gathering aspect, in fact I've had something similar in works on a TD game of my own. I also like the background ambience and the graphics in general. The durability feature made the game bit more challenging than I expected.