New Vegas

Las Vegas has only been mentioned by Tycho in Fallout. He was told about it by his father, who was also a Desert Ranger in Nevada. According to his memory, a fat mobster, similar to Gizmo from Junktown, used to live in Vegas.

Appearances
Vegas will appear in Fallout: New Vegas, an upcoming game by Obsidian Entertainment.

Behind the scenes
The fat mobster is a reference to Fat Freddy, a character from Wasteland.