All in all, a good concept for a game, but I wish the puzzles were more difficult. Also, it needs a save point. I accidentally closed my browser while playing level 28, and would have to restart the whole game in order to play again. Not worth it, in my book. Kudos to the clever signs, though.
SPOILER:
Overall, this was a great game. My one disappointment was in the ending. I would have been a lot happier if there HAD been a stork with an actual volcano, even if it was only a cut scene. At least there was cake, though!