Oh my god this game is so much better than I thought it would be. Seriously REALLY good job here. I'm going to share it around so more people play it. The biggest issue by far is the lack of tutorialization, and your itch page has a pretty rough description of the controls. Once I figured it out though, I was floored by how awesome the mechanics are.
The only gripe I had with the mechanics is that it feels a bit too powerful for Star to be able to essentially fly anywhere at all by repeatedly moving a block upwards while you jump around. Other than that, it all seemed incredible. Seriously. Partner with an artist, get a team together, build out this game in full with way more levels and a much more gradual progression curve of mechanics.
This has so much potential.