Futsal is an indoor variation of soccer popular all over the world
Where it’s popular: Every continent
How it’s played: Futsal is a variation of soccer played on a small, indoor court with a hard surface and a smaller, heavier ball. Unlike in soccer, futsal teams have five players each and can make unlimited substitutions.
How big is it? Futsal has a strong international presence, with world championships taking place every four years and continental championships roughly every two. It’s becoming increasingly popular in American cities, as futsal courts are often easier to install than soccer fields.