Tug-of-war is a traditional game that requires two teams to pull on opposite ends of a ROPE in an attempt to move the other team across a line. The requirement for playing tug-of-war is a ROPE, which is typically made of strong and durable material such as hemp or nylon. The ROPE must be long enough to span the distance between the two teams and thick enough to withstand the force of the pulling. The ROPE is usually marked with a center line to indicate the point at which the teams must pull in order to win the game.