The Complete Edition includes:

Under the Jolly Roger - an open-world pirate RPG with trading, diplomacy, and mythical bosses!
Pirate City - DLC that focuses on the history of Chinese seafaring. Travel the high seas as a new female playable character.
Jade Sea - a DLC pack that lets players build and develop their own settlements.

Set sail for the high seas with the Under the Jolly Roger - Complete Edition!