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 since its debut in 2003, introducing new gameplay mechanics, graphics, and storylines. With titles like Call of Duty: Modern Warfare and Call of Duty: Warzone, it has garnered a massive following and has become a staple in competitive gaming and esports.