Nice concept and very relaxing music, but very easy/lucky as others mentioned already.
Is it a bug that one of my bullets got stuck in a wall cell after one of those rotating things pushed it inside? Maybe that could be a feature for future puzzles!

Fun little physics game. Only recommendation would be to ensure that levels do not feel like you have to "get lucky" to win. That being said, these games are very trial and error based so some iteration is expected. Perhaps put levels into groups with limited amount of resets? That way player would need to limit how much random shooting they do to clear the group.

I enjoyed, but my experience mostly consisted of firing randomly and getting lucky, usually unexpectedly

I like having 2 shots + resetting with spacebar, especially with being able to bounce the shots off of each other, although I never felt like I needed to use the mechanic to complete a level

When pausing/unpausing, I think another instance of the soundtrack began to play, which was a little annoying

Some of the level select options are incorrect, I think. 6 and 7 lead to the same level and one level (8, I think) cannot be selected at all; only reached after beating level 7.

The spinny thing in level 8(?) pushes the shot through the wall often, although I guess that isn't really a problem since you can just restart

I think there should be a delay after completing a level before moving on to the next; I often completed a level without realizing it and I think it would be more satisfying the winning shot, maybe a short replay of its total movement.

Some part of me also wants to see some way to have a massive amount of shots bouncing around simultaneously, although I'm not sure what mechanic purpose this would have

Good game, 

This has a lot of potential, but tbh I never really felt satisfied when passing a level; it always felt like luck after aimlessly shooting

I'd say anyways to make the game feel more skill-based and rewarding (with juice and what not) could make this a really good time

Really liked this! I am a fan of physics based games, and you communicate to the player well. I just wish there were more levels. I could see this being a successful mobile and desktop game.

Fun game, beat it pretty quickly. Would I sound a little bit biased if I said I enjoyed the visuals? ;)