Choose two people to go outside the room.
Everyone else stands in a circle holding hands.
The group should ‘tangle’ up by climbing over hands or going under arms.
The two people outside the room should then return and try to untangle everyone. those in the ‘tangle’ must remain holding hands the whole time (unless it hurts!)
If you have a group bigger than 20 you may want to get into smaller circles or have more ‘detanglers’