The hackey sack was invented in 1972 and it was also called "Footbag". The goal of playing hackey sack is to keep the ball off of the ground for as long as possible. The catch is that you can't use your hands or arms to keep it in the air. In 1972 the first version of the sack was square. Then in 1973 they made a disk shaped sack made out of cowhide leather. In 1974, It was first named the "hackey sack". In 1975 the main inventor of it died, but his partner kept on working. His partners goal was to make it more durable, and a more popular game.