Where is most of Assassin's Creed IV: Black Flag set?

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

The 2013 game follows Edward Kenway, a Welsh privateer who becomes involved with both the Assassins and the Templars during the Golden Age of Piracy. Its open world includes major locations such as Havana, Nassau, and Kingston, along with numerous islands and stretches of open sea.

The Caribbean setting supports the game's emphasis on naval travel, ship combat, exploration, and piracy. Edward commands the Jackdaw, which can be upgraded with weapons, armor, and cargo capacity. The story also features real pirates including Blackbeard, Charles Vane, Anne Bonny, and Calico Jack.

The game's title can cause confusion because it is part of the Assassin's Creed series but gives unusually large attention to pirate life. Its historical campaign is set mainly in the early eighteenth century, rather than in the Renaissance period used by the earlier Ezio games.