Rugby is a team sport played between two teams of 15 players. The objective is to score points by grounding the ball in the opponent's end zone and kicking goals. It is played on a rectangular field with goal posts at each end. Points can be scored in various ways, such as tries worth 5 points, conversions worth 2 points, and penalty kicks worth 3 points. Players can pass and run with the ball and also tackle opposing players carrying the ball to take it from them.