Impressive! I've had a great time playing this one :)
The gameplay is very smooth, and the gravity well mechanic is really interesting and opens many possibilities. The level design is pretty good, the only thing I might have hoped for is maybe more opportunities for chaining multiple gravity wells like in the first sequence where it appears (shown in your gameplay GIF).
Graphics and music are both very fitting!
I made the mistake to play the whole game with WASD + Z/C/Space and my hand was eventually hurting a bit from twisting this way, especially in later levels where you often need to place/jump/clear/place/jump/clear etc. My mistake for not fetching the gamepad which I assume gives a much nicer feel with both hands playing.
The story and writing were also pretty good, I'm looking forward to see if there's any post-jam future for this game. Definitely one of my favorite entries so far :)