Games that involve open-ended worlds are becoming a huge hit with players. It allows you to go anywhere you want and do anything you want to do. In other words open-ended worlds give you the ability to play the game how you see fit. Bethesda Softworks is highly known for their creation of open-ended worlds, since their last game was The Elder Scrolls IV: Oblivion.
This time they turn their focus on a game that many enjoyed 11 years ago, Fallout, and bring you Fallout 3 to continue their philosophy of the freedom of choice.