Badminton originated as a children's game in India called Poona. It developed into its current form in the 1860s when British soldiers in India began playing a version with a net and competitive scoring. The game grew popular among the British elite and the first official rules were established in 1877. Badminton is now an Olympic sport with over 150 member countries in the International Badminton Federation. The aim is to hit the shuttlecock over the net and land it in the opponent's half of the court before they can return it. Matches are best two out of three games to 11, 15, or 21 points depending on level of play.