The players are scattered in the marked area. Select one player as 'It' and also select a runner and give him a cap. Only the one holding the cap may be tagged. 'It' tries to tag the runner who runs or passes the cap to some other player who must not refuse it. When a player holding the cap is tagged, he becomes 'It'.
Cap
Any number of players
Make sure to explain rules clearly before starting. Divide players into equal teams for fair competition.