I love the aesthetics of the game. Its very chill and i like that but i feel it is also a little bit of a detractor to the game. I think adding more feedback to the the balls hitting stuff could make it a bit more engaging. Something like a pop sound or like a little animation when they get hit. I think maybe making the balls get faster over time could up the difficulty a little bit too. Personally I like games where I can just chill and play for a long time so I really did enjoy playing your game, good job!