Nice entry, Game is quite fun, You could improve UI a bit, it doesn't scale when played on fullscreen, common problem that is quite easy to fix, also adding particles when eating a planet, it would add quite a lot of game juice, also you should make it a bit harder by making planet spawning more random, maybe by moving spawn points, and maybe adding lag to blackhole, because right now you can just circle around 4 spawn points and it makes the game really easy, probably if you improve it and add some additional feature it could be a good mobile game