The Trangleball (rebounding ball game) provides many games within one simple device - a pyramid in the middle of a gym, yard or ball field. Trangleball is a genuine invitation to active, creative and athletic fun. For all ages; from two players all the way up to 36 players. Contains everything needed for up to 36 people to play action-packed rebound games. A player throws a ball at the three-sided pyramid in the middle of the court. Another player catches the rebounded ball, then moves and passes the ball in a variety of fun activities. Play Trangle™ soccer, baseball, basketball, stoopball, and more, indoors or out. Set includes 14"H pyramid, easy-to-assemble court boundaries, nine balls, and an instructional video.