At least fro a while, it's fun to watch the dog astronaut bounce and get squeezed between the asteroids. Sometimes it reminded me of that old Chaplin film where the guy got stuck between those big gears. The music is nice and adds to the whimsical nature of the game. I guess there could be more challenge for the more experienced player.
If you're interested, you'd be welcome to enter this game to our Game Dvelopment World Championship!