I played the game a bit and it's not bad. I only played the WebGL version so I don't know if everything applies to the one with the executable file. I like the upgrades and the idea is quite unique. The first issue I have with this game is that when you press space bar, the action happens the moment you press it. If you click though it waits until you release the mouse button. I also found a bug where if you click and then you press the spacebar, the spacebar counts as two presses. I think the pacing could also be a little big better. That's all I noticed. Overall pretty small but nice game.