Call of Duty is a popular video game franchise known for its immersive first-person shooter gameplay. Set in various historical and modern military conflicts, players engage in intense combat scenarios, often in both single-player campaigns and multiplayer modes. The series has evolved over the years, introducing new mechanics and settings, while maintaining its core focus on teamwork and strategy. The franchise began in 2003 and has since become a cultural phenomenon, with numerous titles released across multiple platforms. Notable entries include Call of Duty: Modern Warfare and Call of Duty: Warzone, which have garnered massive player bases and critical acclaim for their engaging gameplay and storytelling.