Soccer is a game played by two teams with a round ball that may not be touched with the hands or arms during play except by the goalkeepers. The object of the game is to score goals by kicking or heading the ball into the opponent's goal. The team that scores the most goals by the end of the game wins. Soccer is the beautiful game played by millions of young girls and boys across many continents; from the beaches of Rio, the streets of major cities, to local parks. The Laws of the Game were originally codified in England by the Football Association in 1863 and have evolved since then. Association football is governed internationally by FIFA, which organizes the FIFA World Cup every four years. At the turn of the 21st century, the game was played by over 250 million players in over 200 countries, making it the world's most popular sport.