Starts up bit slow. You can stack towers onto eachother, i don't know it was intentional or not but it sure makes content trivial (https://gyazo.com/493517b7e6f1162e71f79fcccd8b91ac). Wish there was some kind of wave control, so i could set up challenging enough difficulty myself - "wave rush" mechanic for example. Turrets look good. Some music would be nice. Nicely done.