Wallball is a team sport played between a various number of players per team in which players hit a bouncy ball against a wall, using their hands.
The last person to be holding the ball after everyone is out is the winner, and their team immediately wins the game.
The game requires lots of motion, and especially benefits young athletes when playing mostly at schools.
Wallball is derived from many New York City street games played by young people, often involving the Spalding hi-bounce balls popular in the 1950s.
There game consists of at-least two players, goes for less than 10 minutes and only requires a bouncy ball.