Official Rules: Stack Cup

1. Setup. Two teams, each with its own color of cups: six per player, each about a third full. Mix them in one cluster around a full center cup.
2. Start. Each team's first shooter starts on the whistle. Both teams shoot at once.
3. Shoot. Bounce the ball off the table into one of your team's cups.
4. Make it? Take the cup, finish it, stack it on your team's stack, and pass the ball to the next teammate.
5. The other team's cup? A gift. They stack it. You finish it.
6. The center cup? Take a drink from it, and keep shooting.
7. First team to stack all its cups wins. The losing team finishes the center cup, together.

This is not Rage Cage. Ask the Official.