Challenge Ratings (CR) are a numerical system used in tabletop role-playing games, like Dungeons & Dragons, to gauge the difficulty of encounters for player characters. Each creature or challenge is assigned a CR, which helps game masters determine how tough a fight will be based on the players' levels and abilities. The CR system allows for balanced gameplay by providing guidelines on how many creatures or challenges can be introduced without overwhelming the players. A well-matched encounter can enhance the gaming experience, ensuring that players face appropriate challenges that test their skills without leading to frustration or defeat.