In which broad region is Assassin's Creed IV: Black Flag primarily set?

Assassin's Creed IV: Black Flag is primarily set in the Caribbean.

The game takes place during the Golden Age of Piracy in the early eighteenth century. Its open world includes islands, coastal settlements, and maritime routes around locations such as Havana, Nassau, and Kingston.

The protagonist, Edward Kenway, is a Welsh privateer who becomes entangled in the conflict between the Assassins and Templars. Naval exploration and ship-to-ship combat are central features, with Edward sailing the Jackdaw through the Caribbean Sea.

The title is sometimes described simply as a pirate game, but its plot remains part of the wider Assassin's Creed mythology. It also connects to the Kenway family narrative established in Assassin's Creed III.