Cute graphics. I love the appearance of the planets, and walking all the way around them in a matter of seconds. It reminded me of The Little Prince.
Also, very original gameplay. I was occasionally frustrated when a ridiculously long jump turned out to be in the wrong direction, but those are the breaks!
One quibble about the presentation: Because of the humongous distances involved, I don't think stars parallax in the way depicted. I think an immobile starfield plane would have been more accurate.
I also appreciate the very helpful little tutorial on the game page!