Assassin's Creed IV: Black Flag is a 2013 action-adventure game developed by Ubisoft Montreal and published by Ubisoft.
Black Flag was originally released for PlayStation 3, Xbox 360, and Wii U in October 2013 and a month later for PlayStation 4, Windows, and Xbox One.
It was later ported to the Nintendo Switch as part of The Rebel Collection alongside Assassin's Creed Rogue in December 2019.
The game was released for Google Stadia in September 2021.