The term TUG-OF-WAR NECESSITY is a four letter word, ROPE. ROPE is an essential item for the game of tug-of-war, as it is used to create a line between two teams that must pull against each other in order to win. The ROPE is usually made of strong material such as hemp or nylon, and is typically around 30 feet long. It is also important to ensure that the ROPE is securely tied at both ends so that it does not break during the game.