Cuju or Ts'u-chü (蹴鞠) is an ancient Chinese ball game. FIFA cites Cuju as one of the earliest competitive ball games using the feet, but also that it did not influence any modern ball game. It is a competitive game that involves both teams trying to kick a ball through an opening into a central hoop without the use of hands whilst ensuring the ball does not touch the ground. This is similar to how hackey-sack is played today and the sport resembles a mix of basketball, soccer and volleyball. Descriptions of the game date back to the Han dynasty, with a Chinese military work from the 3rd–2nd century BC describing it as an exercise. It was also played in other Asian countries like Korea, Japan and Vietnam.

A footbag is a small, round bag usually filled with plastic pellets or sand, which is kicked into the air as part of a competitive game or as a display of dexterity. "Hacky Sack" is the name of a brand of footbag popular in the 1970s, which has since become a generic trademark.