Ski acrobatics have been practiced since the 1930s. Early US competitions were held in the mid-1960s. The first freestyle meet is believed to have been held in Attitash, N.H., in 1966. During the competition, skiers had to ski "compulsory form" runs in which they had to display correct technique, followed by "free style" runs in which they performed stunts of their own choosing.
FIS recognized freestyle skiing as a sport in 1979. The first FIS Freestyle Skiing World Cup was staged in 1980 and the first FIS Freestyle World Ski Championships took place in 1986 in Tignes, France. Mogul skiing was added as an official medal event at the 1992 Winter Olympics in Albertville, and the aerials event was added for the 1994 Winter Olympics in Lillehammer. Ski half-pipe and slopestyle were added to the schedule for the 2014 Olympic Winter Games in Sochi, Russia.