Four Square

Four Square is an American schoolyard ball game played in a large court of four numbered squares. One player stands in each square; a rubber playground ball is bounced between players by hitting it downwards into another player's square. If the ball bounces out, or your square commits a fault, you're out — the next player rotates in from the sideline, and everyone else advances up the numbered rank. The top-square player (King) sets the rules.