This is a fun game that would great on mobile.
I'm a bit confused on what the lose condition of the game is, but other than that it seems very straightforward! I do wish there was a little preview coming off of your ball as to the direction you were going to fire. The two+ planet trickshots seem nearly impossible, but accidently hitting one was incredibly satisfying.
Not much to go on here about the theme. Whether you went with momentum or mutation, I couldn't see anything that really stood out to me in that regard.
The game seems very clean and polished from an aesthetic standpoint. Everything seems cohesive and with a clear minimalist style. Great job!