Fallout 3 is the third main entry in the Fallout series and marks a significant departure from previous Fallout games. Indeed, unlike its predecessors, it now utilises 3D graphics, a first-person perspective and real-time combat, replacing the previous turn-based, 2D format. The game itself is an action RPG, set in a post-apocalyptic world, and the main story occurs in the year 2277. This story mode allows for character customization and is accessible to new players, because it is not a direct sequel to Fallout 2 and does not require knowledge of that game's plot.