The core rule
You can only contact the yellow game ball with the ball you are holding. No hands or body contact.
- Bump it. Hold your ball and use it to strike the game ball directly.
- Throw it. Release your ball at the game ball to play it higher than you can reach by jumping.
If your thrown ball hits the ground before the game ball, your side loses the point. That stays true no matter what happens to the game ball next.