Four square (also called four squares or box ball) is a sport played on a square court divided by two perpendicular lines into four identical boxes creating four squares labelled 1–4 or A–D. 

Four square is a popular game at elementary schools with little required equipment, almost no setup, and short rounds of play that can be ended at any time. The game also has a large following for adults in central Maine, Riverdale, Massachusetts and the Boston, Massachusetts area.

History
Four square dates to at least the 1950s. A game called four square is mentioned in newspapers at least as far back as the 1950s, but the rules are not explained. A 1953 teacher's manual describes four square with the same rules used today.

Rules
Four square is played on any hard-surfaced court, such as wood, concrete or asphalt. There is no official court size, but typically courts measure between  on a side, and divided into four smaller squares labelled 1–4 of equal size. 

Rules vary, but there are two common objectives. The first is to have the most points when the game ends, where 1 point is awarded to the person in square 4 (the server) each turn. The second is to be the last player who hasn't been eliminated by obtaining a predetermined number of "outs".

One player occupying each of the 4 squares at a time; the other players wait in line. The player in square 4 serves the ball into another square. Once the ball bounces into a square, the player who occupies that square must hit the ball into another square with their hands, and so on, until someone gets out.  Each time a player gets out, that player leaves the court and enters the back of the line and all remaining players advance to the higher numbered square (if applicable). Square 1 is then filled with a new player from the line of awaiting players.

A player may get out as follows:
	Failing to hit the ball into another square
	Allowing the ball to bounce more than once in their own square
	Hitting the ball out of the squares or hitting a line
	Hitting the ball incorrectly such as by holding, catching, carrying, etc.
	Hitting the ball out of turn or committing interference

Variations 
Four square has inspired other similar games. One example is nine square, which uses a 3-by-3 grid instead of a 2-by-2 grid. The 9 square is the middle and the ball is served from this position. Another version is played similar to the original in that four players occupy their respective spots, but they must keep the ball off the ground like in volleyball.

The game is called King Out in Sweden. A similar schoolyard game is called handball.

World championships

The Four Square World Championships is a competitive adult four square tournament, which takes place in Bridgton, Maine, United States, each year. The competition draws athletes from the US and Canada, and has registered competitors from Israel to Bermuda. Winners from various years are:

 2023 Men's World Champion, David Long, South Paris, Maine, USA
 2021 and 2022: Cancelled due to global pandemic
 2020 Men's World Champion, Alec Douglas, Norway, Maine, USA
 2018 Women's World Champion, Brittany Dunay, Maine, USA
 2018 Men's World Champion, Christian Housh, Cambridge, Massachusetts, USA
 2018 Women's Junior World Champion, Penny Housh, Cambridge, Massachusetts, USA
 2018 Men's Junior World Champion, Sabian Hallin, Maine, USA

Prior world championships have been held in January or February from 2005 through 2018.

World records
On August 4–5, 2012, a group of 17 Needham High School students and alumni — assisted by 50 other Needham residents at various times — broke the previous world record by playing for 34 hours, the previous record being held by 15 Manchester College students who played the game for 30 hours. The world record was held by eight Argentinean players for 29 hours in 2008, as recognized by Guinness World Records. The Argentinean record was preceded by a group of teens from Youngstown, Ohio, who also played for 29 hours.

See also

Russian four square
Crossnet
Wallball
Roundnet
Handball (schoolyard game)

References
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External links
 Official rules

Children's games
Ball games