The players scatter around in the marked area. One player is selected as 'It' and chases the others who run to escape being tagged. When 'It' tags one of them, that player become 'It' and he continues the game. All must keep within the boundary. If a player goes out of the marked area he automatically becomes the 'It'.
None
Any number of players
Make sure to explain rules clearly before starting. Divide players into equal teams for fair competition.