Call of Duty is a prominent first-person shooter video game franchise published by Activision. Launched in 2003, it was originally developed by Infinity Ward and has since seen contributions from various studios, including Treyarch and Sledgehammer Games. The franchise has evolved from its initial World War II setting to encompass modern and futuristic warfare themes, making it one of the best-selling FPS franchises worldwide.

The core product is the Call of Duty series, which features multiple mainline titles and spin-offs. Players can enjoy single-player campaigns with cinematic storytelling, competitive multiplayer modes, and battle royale experiences like Warzone. The games are available on PC, consoles, and mobile devices. Call of Duty also supports a vibrant esports ecosystem, including the Call of Duty League, engaging a diverse global audience of gamers.