Call of Duty

Call of Duty is a first-person shooter video game developed by Infinity Ward and published by Activision in 2003. Set during World War II, the game follows soldiers across multiple campaigns in the European and Pacific theaters, emphasizing immersive single-player storytelling alongside innovative multiplayer modes. The original game was groundbreaking for its squad-based AI, dynamic level design, and online multiplayer that prioritized fast-paced, skill-based combat over large-scale team coordination.

The game's success established a franchise that would dominate the shooter genre for two decades. Its multiplayer introduced mechanics like customizable loadouts, progression systems, and map design principles that became industry standards. Call of Duty spawned numerous sequels across different time periods and settings, becoming one of the highest-grossing video game franchises of all time and influencing the design of countless competitive shooters.