Super unique. I haven't played anything else like it in the jam.
The game is juicy and feels great to play. I like the core mechanic a lot. The music is also excellent and the whole things has a nice level of polish.
As far as feedback goes, I think you focused on all the right things in the jam. If you do update it after the jam I would suggest adding a more visually clear indication that the player has missed a balloon.
Great game. Thank you for sharing.