Fallout 4 is an action role-playing video game developed by Bethesda Game Studios and published by Bethesda Softworks for Microsoft Windows, PlayStation 4, and Xbox One. Released worldwide on November 10, 2015, it is the fifth major installment in the Fallout series. The game is set within an open world post-apocalyptic environment that encompasses the city of Boston and the surrounding Massachusetts region known as "The Commonwealth". The main story takes place in the year 2287, ten years after the events of Fallout 3 and 210 years after "The Great War" that caused catastrophic nuclear devastation across the United States.