Nice job on the game, but I have to say, I have no idea what just happened, there were no visual feedback to the player to what he does, the objects you could upgrade didn't change colors or sprites, to show that it indeed upgraded, the weapons didn't shoot anything, for the most part I didn't even know if it did really shoot, and the player also has no feedback to when he would won, when I won, I was really confused. And there is also no way for the player to reset the game, unless he reloads the web page. It also really lacks some music and sfx. The sprites were also very small, but the idea was pretty good, you just have to adress these issues and the game will be even better!