Call Of Duty
In short
A massive series of first-person shooter video games published by Activision that began in 2003. The most recent entry in the franchise is Call of Duty: Black Ops 7, released in November 2025.
In plain words
You play as a soldier in fast-paced battles, usually seeing the world through the character's eyes. It features both cinematic single-player stories and competitive online multiplayer modes.
A simple example
A player joins an online lobby to compete in a team-based match against other people from around the world.
Why it matters
It is one of the most successful and profitable media franchises in gaming history. It sets many trends for how modern military shooters are designed and played.
Easy to mix up
Do not confuse the franchise name with specific individual game titles like Modern Warfare or Black Ops.