This is a fun idea for a game! I like the sounds when planets hit each other, very satisfying. I also like all the little popups showing point gains :)
I have some constructive thoughts about how to improve the game:
- The black hole is quite hard to see against the black background.
- The planets should start out still, but easily start bumping around after I shoot them. This would make it easier to understand how the game works while also making it less confusing that I'm getting points right away without doing anything!
- It's not clear to me that my involvement in shooting the planets is actually leading to my getting more points! It feels a little random overall. Maybe one way to improve this would be to allow you to move the turret around, this would allow a more skill-based approach where I could be more deliberately bouncing the planets, e.g. into the black hole.