This game is really amazing. It's incredibly unique, fits the theme super well, and it offers a lot of strategy and expression on the part of the player. I only really have two issues- I think it's a bit slow paced (opening the boxes takes a little too long) and it's pretty punishing when the tower falls, which is a tough combo. I think the limitation of destroying only one item a round is a little too punishing, as it's really easy to have your tower tip over a bit and absolutely ruin a ton of blocks, and then the only way to continue is to slowly and repeatedly rest so you can get enough hammers to clear out everything that fell and is awkwardly positioned at an angle. It can be really tedious, and I feel like just letting the player use as many hammers as they want in a round is probably a way better solution- deleting level parts alone already is punishing enough as a mechanic for failure, I don' see why it's limited to one per round at the moment.
But seriously, I only complain because this game is such an awesome concept that is really so well executed that I care about it getting even better lol. It's incredibly unique and probably the best take on the theme I've seen. Seriously, great work.