Since its release in 2003, the Call of Duty series has sold over 400 million units worldwide, making it one of the most successful video game franchises ever. This announcement coincided with another significant piece of news, Call of Duty: Warzone surpassed 100 million players. It's a remarkable achievement for a game that only debuted last year in the crowded free-to-play market.
With the release of Infinity Ward's Call of Duty 4: Modern Warfare in late 2007, Call of Duty's rise to the top arguably began. Modern Warfare is regarded as a watershed moment for Activision's flagship brand since it was the first installment set outside of the World War II period. When the modern-day military tale, set in 2011, was released, it received a lot of positive feedback, as did the game's multiplayer feature.
This staggering figure includes every title in the long-running first-person shooter franchise, from the original Call of Duty in October 2003 to the best-selling Call of Duty: Black Ops Cold War last fall.