Modern Warfare III retains the realistic, modern setting of its predecessors and continues the sub-series storyline. The story follows multi-national special operations unit Task Force 141 tracking down Vladimir Makarov, a Russian ultranationalist and terrorist planning to trigger a third World War. The game’s multiplayer includes sixteen remastered maps from 2009’s Modern Warfare 2, with at least twelve new maps planned for inclusion post-launch. A Zombies mode, co-created by Black Ops sub-series developer Treyarch and built around an open world player versus environment experience, is also included.

After wrapping development on Call of Duty: Vanguard (2021), Sledgehammer Games were reportedly assigned by Activision to develop an expansion pack for Modern Warfare 2 which then changed to become a full, standalone release in the Call of Duty series. After a series of leaks in early-to-mid 2023, the game was officially revealed in August 2023, with a showcase event and public beta also taking place in October. Upon release, Modern Warfare III received mixed reviews: it received praise for its multiplayer mode but criticism for its campaign mode, while its Zombies mode received mixed opinions.

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