Your father is the head doctor and an all-around Nice Guy, and your mother. It's an underground paradise that saved humanity from the War two centuries ago, and has been home to everyone within it for generations. It's 2277, and Vault 101 is an okay place to live.
It marked a major shift for the franchise, going from a traditional turn-based Western RPG to a first-person Action RPG, and left the West Coast setting of previous games for a fresh start in the D.C. It was developed by Bethesda Studios, who purchased the rights to the franchise after Interplay Entertainment's bankruptcy. note It is, however, the fourth game in the official timeline due to Fallout: Brotherhood of Steel being declared non-canon. Fallout 3, released in 2008, is the third numbered and fifth released game in the popular Fallout series.