Two or three players are appointed as 'It'. The remaining players scatter around the play ground. Each 'It' will try to tag as many players as possible. As soon as a player is tagged by an 'It' he has to squat down immediately. He will keep that position till he is touched by a free player. When touched by a free player he can join the game.
None
Any number of players
Make sure to explain rules clearly before starting. Divide players into equal teams for fair competition.