Each ball has Bowling Buck bonuses. The more bonuses the higher the star rating. The higher the Star rating the better the ball and the more Bowling Bucks you earn with each game played.
Star Bonuses that pop-up during play are part of the earning system. They are based on the star rating of your ball. The more stars, the more bowling bucks you earn!
Let's Bowl 2 is a 3D game when you swipe up to bowl be sure to swipe towards the pins. If your ball is off to the side and you swipe straight up you'll end up in the gutter.