Nice looking game, but the falling death, and spawning in the middle of the sky was annoying, I even fell through solid world a couple of time, a bug you can reproduce by just pressing D and SPACE together at the start and holding both down till you fall to your death through the world.
Pity as the game was cute and that stopped me really enjoying what was a lovely looking game, I hope you can iron out some of the bugs after the Jam, as I think you could have a really fun game here with the bugs gone!