I'm afraid it freezes in the Webversion with sufficient balls in play....
Hello, Ouroborb dev here. Thanks for playing and commenting on my game! I'm hard at work replaying and fixing itch.io-related bugs that have come up. I fixed various memory leaks and added object pooling for when there are many balls on screen, and so far that has stopped all crashes and major lag. Thanks again for reporting it and helping make the game better—I really appreciate the feedback!