Cool concept! Fun to play as the little alien, and it's a simple mechanic, but very enjoyable -- perfect choice for game jam!
The game did lock up a couple times for me, causing me to reload, and it was annoying if I was in the middle of a hop by the time my last planet blew up, it would trigger a game over, even when I was on trajectory to reach the next planet (or when an asteroid decides to spawn going at me mid-jump). There was also one time I was on trajectory to "skip" a planet, reaching the next one safely, but that also triggered a game over :(