Have everyone stand at least five feet apart, so that when you spread out your arms, you’re not touching anyone else’s arms.
The leader then shouts out: “Clump of [some number]”
Everyone then has to huddle together in a group huddle or “clump” of that many people. There should usually be people left over because there aren’t enough people to form a full clump.
If you can’t form a clump, then you’re out! The game ends with a clump of two, and those two win the round!