Fallout 3 was originally being developed around the early 2000s by developer Black Isle Studios under the codename Van Buren. The game was an RPG similar to the previous installments played from a top-down view and would've used the engine from the canceled "Baldur's Gate III: The Black Hound". The game would've been set in the southwest of America and the story focused around a prisoner who escapes from prison and trys to discover why he was there in the first place and to stop a scientist named Presper from unleashing a virus to cleanse the world of non-pure blood humans. The project was canceled after Interplay had laid off the development team, however a tech demo was later leaked onto the internet.