You created a really nice mood - I'm definitely taking notes on the particle trail, lights/shadows, and the quantization shader in the background!
I like your game's concept but had too much difficulty with the controls, and the two-mode gameplay wasn't really explained. I have a lot of patience for game jam games, but unfortunately these things (+ the performance!) held me back from enjoying it completely.
Buuuut I saw you comment that you wanted to really polish the aesthetics a ton, and you very much succeeded on that front! I've been working on learning how to polish myself, and I think you have a more masterful grasp on it than I do. Take what you learned from implementing these effects into your future game jams!