Online Fantasy Sports are virtual games where participants create their own teams made up of real-life athletes from various sports, such as football, basketball, or baseball. Players earn points based on the actual performance of these athletes in real games, making strategic decisions about team composition and player selection crucial for success. Participants typically join leagues, which can be public or private, and compete against others over a season or a specific event. Many platforms offer features like live scoring, player statistics, and trade options, enhancing the experience and engagement for fans of sports and competition.