Which studio developed the original Call of Duty game?

Infinity Ward developed the original Call of Duty game. Founded in 2002 by Grant Collier, Jason West, and Vince Zampella, the studio was built by former members of 2015, Inc., the team behind Medal of Honor: Allied Assault.

Call of Duty was Infinity Ward’s first project. Released for Microsoft Windows on October 29, 2003, it portrayed World War II through American, British, and Soviet campaigns. The developers used a modified version of id Tech 3, the engine originally created for Quake III Arena, while emphasizing squad-based combat and large-scale battles.

A common mix-up is confusing the original game with later entries made by Treyarch or Sledgehammer Games. Treyarch developed Call of Duty 3 and the Black Ops series, while Sledgehammer later led games such as Advanced Warfare. Infinity Ward remained responsible for the franchise’s foundational entries, including Call of Duty 2 and Call of Duty 4: Modern Warfare.