Fun game! It reminds me of the old flash games I used to play as a kid so there's a huge nostalgia factor in there for me :]
I shared this with a friend and we both found the momentum-based movement to be an interesting concept and mechanic. Controlling our very cool looking bird ball guy around the levels was fun (especially seeing us be flung around metres into the air lol) and the idea of enemies forming another method of propelling the player around the levels was innovative too! Although, the difficulty curve from going from the first to the second level is a little big: we felt like adjusting the layout of the levels slightly would have helped with that (like the ramp not providing enough momentum). Despite this, the game is challenging, entertaining, and captures the jam's theme well! Great work :]