Fallout: New Vegas is an upcoming role-playing 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. It is set in and around post-apocalyptic Las Vegas (New Vegas).
The game was released on October 19th in North America, and will be released on October 22nd in Europe, and November 4th in Japan. It will be available on the PC, Xbox 360, and Playstation 3.
Fallout: New Vegas has 4 different pre-order bonuses, the Classic Pack, Caravan Pack, Tribal Pack, and Mercenary Pack. They are available at GameStop/EB Games, Wal-Mart/Steam, Amazon, and Best Buy, respectively. Each one has a unique suit of armor and a unique weapon not found in-game, along with a few other items that are available in-game.

Fallout: New Vegas was announced on April 20, 2009 at Bethesda's London showcase.[1] The first official information was released in the February 2010 issue of PC Gamer. You must login or register to view this content.

The game is set in a post-apocalyptic, retro-futuristic Las Vegas following the Great War between the U.S., China and other countries, a conventional and nuclear war that occurred on October 23, 2077 and lasted less than two hours despite causing immense damage and destruction. Before the Great War were the Resource Wars, during which the United Nations disbanded, a plague rendered the United States paranoid, and Canada was annexed. The city of New Vegas itself, didn't get hit as much as other districts, and most buildings were left intact. The Hoover Dam supplies all the free electricity and water to those who control it.

The story will continue some parts of the Fallout and Fallout 2 stories, but will not be related in any way to the one in Fallout 3.
Fallout: New Vegas takes place in 2281, three years after the events of Fallout 3 and thirty-nine years after Fallout 2, making this installment set furthest of the series. The New California Republic plays a major part in the story in a three way struggle between the Caesar's Legion slavers and the local New Vegas populace.
The Courier, the player character, is meant to deliver a package to Primm. The Courier is then floored by the Great Khans, and Benny stands in front of the Courier with the Khans cornering the Courier (who is on the ground), holding the platinum chip in his hand. Benny says "Look's like this is going to be your last delivery, kid.", then proceeds to shoot the Courier. The camera zooms out and a Khan can be seen digging a grave for him. He is found by a robot named Victor and is sent to the city of Goodsprings. Mitchell then heals him. He is given some medical tests. The player has the option to recieve training from Sunny Smiles. The player is then pushed back into the open world and the quest Ain't That a Kick in the Head begins. Fallout: New Vegas will have a definitive ending, just like Fallout 3.