The Jade Pendant of the Twin Fish is the first and only DLC of Assassin's Creed: Turbulence. The expansion pack introduces a new questline taking place in the Lop Nor region of Xinjiang, in 1944. It follows the track of Jonathan Griffon as he investigates the archaeological operations of a German Expedition in search of a legendary artifact connected to the legacy of the lost kingdom of Loulan.
The expansion pack features new weapons and locations, as well as an entirely new faction of enemies complete with new characters. It also introduces a gameplay element known as the Living Nightmare, purportedly happening in visions induced by the ancient artifacts buried within the sands of the lost city.