Fallout: New Vegas is a RPG video game developed by Obsidian Entertainment and published by Bethesda Softworks. While New Vegas is not a direct sequel, it will use the same engine and be in the same style as Fallout 3, and is being developed by some of the people who worked on previous Fallout games at Black Isle Studios.
Fallout New Vegas revolves around 4 major factions.
* The New California Republic: they want to have control of the city of Vegas as the city has been largely rebuilt and had very little in the way of damage from nukes.
* Caesar's Legion: Dressed in Roman attires they are the largest slaver group in the game. Not known if they are headquartered in Vegas or not.
* New Vegas Residents:All they want to do is do what they have been doing, trying to survive. Briefly mentioned in the original Fallout, New Vegas is a city built out of the ruins of a post-apocalyptic Las Vegas.
* Brotherhood of Steel: Now stranded in the Mojave waste's, they are fighting just to survive.