The game of hackysack is usually played by standing in a circle and taking turns kicking the ball with one's feet/legs. The ball is passed to other people in the circle, and the idea is for everyone to kick it without the ball touching the ground. Because hackysack players are often found at varying skill levels, in practice this is more challenging than it sounds unless you have an experienced group of people playing.
Other variations of this game can be found as well.
Hackysack tends to be identified with stoners], hippies] or wanna-be hippies, and the like, but in reality these stereotypical groups are not the only people that play it. If you've got time to kill, it can be a fun game for anyone.
Celebrate Hacky Sack Day
There are also a variety of other gmaes to play with a hacky sack such as
Killer Hack- a certain amount of people must touch the hack and then anyone can grab it out of the air and whip it at another person in the circle. If you are hit you are out for that game.
Power Hack- Everyone tried to hit the hacky sack as high into the air as possible, and make amazing saves to keep it going.
4 Square- Normally played with hands and a large ball that bounces, the rules are very similar but you play with a hacky sack and your feet. If you let the Hacky sack land in your square you are out and someone new comes in.
Hacky sack is a sociable game and can be thought of as a minor sport, no doubt that this game will eventually make it to the olypics as many irregular sports/games have. I dont know if there will be many competitors though because many hackyers are stoners, and you are not allowed drugs during the olympics.