Very polished and nice-looking!! Though I agree with the other comment that it needs a tutorial. It took me a bit to figure out what I was doing at all, and I don't think I ever fully wrapped my head around it. I know you made the game in a limited time and tutorials take a long time to make. But maybe even having just one focused goal to start, or something. I dunno!
I was feeling the beginnings of a very addictive, brain-stimulating gameplay loop—like I knew something was there! But I think a few mechanics in need of more explanation were stopping me from fully seeing that loop!