Four Square handball is a great little extra to add to a school yard, or hard court. It can be played against a wall or in a square pattern. It uses a small rubber ball such as a tennis ball and the basic version has up to 4 players, although as with many school sports there are variations, some with 12 players. The object is to hit the into your opponents square after bouncing off your square and cause your opponent to be unable to return the ball. As simple as the game is it can become fairly hard and fast. It develops hand eye coordination and agility. What’s more the space required is not great so you can easily involve a number of children in a relatively small space. The perfect addition to a Multipurpose Court or just to fill in an otherwise unused area.