I always love the 2-3 Pico-8 entries in each jam, but this one is especially awesome. Beautiful graphics, catchy music, and a lot of personality. One of the best games I've seen in the jam.
I must say though, the difficulty scales a little quickly. I got to the end, so I realize that it's a very short game, and that is understandable in the context of the jam. But it would have been nice to have a somewhat smoother difficulty curve. :)