Volleyball, but there’s a rotating roster of “team-based rules”. Example:
- “Only one player can be on/off the floor at a time”
- “A different player from your team needs to hit the ball each time.”
- “You’re connected to another player on a rope; you influence each other.”
- “The player who last hit the ball … must dodge the ball the next time it comes into your half.”
- Etc.