The presentation is top notch, the pixel art is super duper polished for a jam game, good stuff.
I think the overall pacing of the game could be a bit faster? I find myself hugging the ceiling waiting for the level to end most of the time. Maybe with greater spacing between the blocks, you could speed up their falling speed a little more without changing the actual difficulty or time spent in each level. It'd also help to make the levels feel a little less sluggish each time I need to restart.