Variants of association football
There are many variants of association football played around the world, these use widely differing rules and some have a more formal structure than others. Games such as indoor soccer were created to provide year-round play, others such as paralympic football were created to allow those with disabilities to compete. Some games, such as footballtennis, are not related to association football but use a football to produce a variant of another game. There are also motorsport variations of the game.