With Call of Duty: Modern Warfare 2, Infinity Ward used the past as a point-of-reference rather than a blueprint. The result is a thrilling campaign which doesn't rewrite the rulebook, necessarily, ...

In the first Call of Duty, you play three different campaigns as different soldiers from three countries: the United States, Britain, and the Soviet Union.

The 2010s saw the dominance of Call of Duty with innovative gameplay and multiplayer success. A monetization shift took place in gaming; microtransactions and free-to-play games became the norm.