Futsal is the only form of indoor soccer endorsed by FIFA. It is a 5 v 5 small-sided game played on a hard surfaced, basketball sized court with a smaller, heavier low bounce ball. Futsal is played with touchline boundaries and without walls. This is the game that outdoor soccer players around the globe play to refine and maintain their control skills and touch. It is superior to walled soccer in terms of developing better skills and technique. In traditional American walled soccer, players regularly whack the ball (and sometimes their bodies) against the boards which promotes improper technique and too often rewards errant play. In futsal, players are constantly reminded to play the same quality control game that is required for success in the outdoor game. It is played in all the continents of the world by over 100 countries with 12 million players. The sport is a great skill developer as it demands quick reflexes, fast thinking and pin-point passing. The small, heavier futsal ball requires players to hone their ball-striking and ball handling technique. Great soccer superstars such as Pele, Zico, Ronaldo, Messi, Kaka and Martha grew up playing the game and credit futsal with developing their skills.