You enter a random circus arena with trampolines, trapezes, tightrope, etcetera. The game shows clear poses, tricks, and challenges.
You must try to work together and score points for the tricks and poses.
Which can be as simple as just “manage to get this high” or “be upside-down in the air”.
Probably also works best if players have different roles. So one moves like X, another like Y, and a third is extra strong or has great balance, etcetera.