This is insane I can't believe you made this in one day the ui feels so good it is very interactive the gameplay is very simple yet challenging. And you even gave a build mode. The only critique I really have is a steadier difficulty curve I feel like I was immediately challenged at level 2 although thats fine. I feel the first few levels should be easy enough where you can complete them with ease just to ease them into the mechanic. The first few levels looked easy enough but I would say for the first few levels increase the size of the goal.