Nice one! :) Would have matched the theme of this years GMTK Jam quite well, too, haha!
Level 7 and 10 took me the longest. The levels in between those I found rather straightforward, though..?
Minor nitpicks: Having an undo button would be nice. Also, the automatic restarting could be a little bit quicker for my liking.
Either way, super impressive for a 24h game! Will you keep working on this?
Edit: Gave your game a quick shoutout on Mastodon! :) https://mastodon.gamedev.place/@njamster/110735247821501551