Definitely one of the best games in terms of art style and audio design. I think the gameplay could use a little tweaking however. The introductory level set this game up to have a lot more platforming, and then it was all puzzle solving, which is fine, but I didn't use the sprint or shrink mechanic for the rest of the game. The shrinking mechanic isn't even necessary to use in any level past the introduction which is disappointing. Also I encountered several level with improperly place death-planes, as in, I found spots that just made me fall forever.
Still, this is definitely one of the best games of this jam. Nice work!