Really nice game, with awesome level design and a great idea. I'm also a big fan of the level transition little animation and music ^^
My only small complaint is that it doesn't quite fit the theme of the jam ; indeed, even if it focuses on shrinking instead of growing, the game doesn't lack any mechanic compared to traditional snake, since growing is still present. But that's only a small detail, and it doesn't change anything the fact that this is a great brand new take on the classic Snake formula and a good game. :)