Racquetball is a fast-paced indoor sport played with a hollow rubber ball and a racquet. The game is typically played in a four-walled court, where players take turns hitting the ball against the front wall. The objective is to make the ball bounce in such a way that the opponent cannot return it before it hits the ground twice. Players can compete in singles or doubles matches, and the game emphasizes quick reflexes, agility, and strategy. Racquetball is enjoyed by people of all ages and skill levels, making it a popular choice for fitness and fun.