Hold down your mouse/finger to shoot out balls. See what happens if you put your finger on one of the balls. UPDATE: Balls are now able to bounce off each other. Balls last longer. You can change the stages (click every button until you find one). You also have a microscope, so you can catch a bunch of balls or fix one if it gets stuck.
Thanks to griffpatch's tutorial for making Ball physics: Note: Yes, I know.... It's been a long time since I've posted. Work was getting ahead of me, so I almost quit scratch. That's till I checked in and started looking around again, and then made this project! Hope you enjoy :D