Volleyball is a team sport played by two teams, each with six players, where the objective is to volley a ball over a net and score points by making the ball touch the opponent's court. The game has various positions such as outside hitter, setter, and libero, and is governed by specific rules regarding scoring, contacts, and player rotations. Different forms of volleyball exist, including beach, indoor, and sitting volleyball, each with unique rules tailored to their environments.