Alligator in the swamp
The first group is lying on their stomachs (alligators). The second group are the
runners.
On the go signal the runners must run across the playing area to the opposite
line in order to be safe from the alligators.
The alligators leave their circle to chase the runners. If the runners are tagged by
the alligators they must sit out until the next game.
Repeat this from the other side of the playing area each time. When 3 to 5
people are left, start again.