The Gobi Desert is a mentioned only location.
The Gobi desert is found within both China and Mongolia. Before the Great War, the United States Marine Corps led a campaign there to take out a base in the desert, with the outcome of the mission currently unknown. A unique sniper rifle was made for the mission, which can be found and is named the Gobi Campaign scout rifle.
The Gobi Desert is mentioned in Fallout: New Vegas.