What is Futsal! Looking up sports in Portugal, we came upon this. Yes we are soccer/football fans but we just seemed to miss this, until now.
“Futsal is a football-based game played on a hard court, smaller than a football pitch, and mainly indoors. It has similarities to five-a-side football and indoor soccer. Futsal is played between two teams of five players each, one of whom is the goalkeeper. Unlimited substitutions are permitted. ” Wiki