Love the way you tie the theme into this game! Beautiful animations and visuals. Would really be perfect as a mobile game, especially considering the levels are procedurally generated (wow!).
That said, I didn't really feel like the generated levels were very interesting so it feels more like a time-waster, as much as I dislike that term. They're fine as an extra game mode, but a selection of hand-crafted levels, perhaps with some more unique mechanics, would really make this game more fun for me.