Close to eighty years have passed with no knowledge of the outside post-apocalyptic world. Nearly a thousand people were packed into various Vault-Tec survival shelters completed in the late 21st century. The story picks up years after a two-hour nuclear Armageddon reduced the world to a pile of rubble and debris. Based on the now classic Wasteland, Fallout is a role-playing game set in a post-nuclear environment.