Given that performance, it comes as little surprise that Bethesda Softworks won't be dallying in bringing a follow-up to market.
The game also performed well in the awards circuit, taking the top honours at the 2009 Game Developers Choice Awards last month during the Game Developers Conference. Released in October of last year, Fallout 3 was met with critical acclaim and commercial success, having shipped 4.7 million units worldwide in its first week.
