Call of Duty continues to be the crown jewel of Activision's crown through annual releases and the ever evolving nature of the popular battle royale, Warzone. In fact, Call of Duty Vanguard, as well as Warzone, were a big reason why Activision managed to earn over $5.1 billion just through DLC and microtransactions. As a live service title, these constant updates as well as bundles within the in-game store managed to keep players coming back time after time.