Futsal is FIFA's official indoor soccer game which is, essentially, a scaled down version of outdoor soccer played indoors. It is a small sided game (5v5) played on a court with a smaller (size 3-4) ball. Futsal is played with touchline boundaries. There are no walls in play. Players like Ronaldinho have used futsal to help develop superior skills and footwork. It is superior to walled soccer in terms of developing better skills and technique. In walled soccer, players often whack the ball (and sometimes their bodies) against the boards which promotes improper technique. In Futsal, players are constantly reminded to play the same quality control game that is required for success in the outdoor game.