“Futsal is a variant of football that is played on a smaller pitch and mainly played indoors. Its name comes from the Portuguese futebol de salão which can be translated as ‘hall football’. During the sport’s second world championships held in Madrid in 1985, the Spanish name fútbol sala was used. Since then, all other names have been officially and internationally changed to futsal. It was developed in Brazil and Uruguay in the 1930s and 1940s.
Futsal is a game played between two teams of five players each, one of whom is the goalkeeper. Unlimited substitutions are permitted. Unlike some other forms of indoor football (soccer), the game is played on a hard court surface delimited by lines; walls or boards are not used. Futsal is also played with a smaller ball with less bounce than a regular football due to the surface of the pitch. The surface, ball and rules create an emphasis on improvisation, creativity and technique as well as ball control and passing in small spaces”.
Excerpts taken from Wikipedia: wiki/Futsal