This game is really fun and I see a lot of potential. What I noticed through my playthrough was that aiming and charging up feels kinda weird. Charging up was very slow and I didnt quite get how aiming works at first because you have to move your cursor aditionally to charging up.. This aside I love that the balls are planets, this fits the upgrades soo good and the sfx were satisfying. Kinda a bummer that there is no music but the game still has a great ambience.
Very impressive job, congrats! :D