Feed Hungry Bob with colorful balls. Be careful because Bob is a fellow who can not sit still while eating. You need to carefully place all the ball inside his mouth. The numbers of ball that will successfully land in his mouth will be the same number that will add in your ball pit. So if you only got one ball inside his mouth after dropping three, only one will be added in your stash. If you are low in balls, you can purchase some right after the level. It's a simple yet challenging game!