This game is set in the post apocalyptic setting of the Fallout video games series. It will take place in a region with heavy radiation poisoning to the soil. Patches of ground were seemingly spared by some miracle and are surprisingly fertile. Most of the tribes food is harvested from the Ocean as well as the materials needed for their tools and clothes. The constant fight against the Mirelurk population in the near waters of the ocean makes the village constantly at the ready. This constant hostile contention of the near ocean waters makes it considerably unsafe to approach the village by the other human tribes in the area. From the land they are equally unapproachable as a ground based route is certain dead from the radiation that saturates the ground for miles. The only “safe” way in or out of the village in a series of perfectly round underground passages that go for miles only ten or so underground. These underground passages are called The Warrens. Ghouls and other creatures roam The Warrens but the main path to the wastelands is traveled frequently and is usually kept clear. Young adults of the tribe go into The Warrens on their Rok’Ta or “Time of Trying” to bond with their “Hashra”. A Hashra is the collection of youths that have been given their name and Speaker Path during the Harvest Festival. A troupe members Hashra is expected to become as close as family as they will be putting their lives in each other hands for basic survival regularly. The Hashra are youths their own ages that will be their traveling companions as they explore the wastes to scavenge for resources and materials for the good of the tribe.
The background story of Fallout involves a “what-if” scenario in which the United States tries to devise fusion power resulting in the whole country becoming hegemonic and having less reliance on petroleum. However, this is not achieved until 2077, shortly after an oil drilling conflict off the Pacific Coast pits the United States against China. It ends with a nuclear exchange resulting in the post-apocalyptic world in which the game takes place. It is emphasized in Fallout 2 that nobody knew who sent the first missile.
Before the nuclear exchange took place, great underground Vaults were constructed across America, supposedly to protect the populace from the dangers of radiation. Although only 122 were constructed, over 400,000 would be needed to protect the entire nation. This is because the Vaults were not intended to save humanity; rather, they were social experiments being conducted by the United States government. Most vaults featured some variable to test how certain things influence people (and presumably the personal characteristics of the vault’s occupants) such as Vault 69, which reportedly contained 999 women and one man.
Each installment of the series takes these facts as the context to the subsequent adventures: much of the landscape the player travels through is scarred with wreckage as well as radiation. These effects are not limited to the environment. Mutated survivors – those who lived through the attack outside a vault – are often physically unrecognizable as human. Even livestock – mostly represented by cows – are rarely if ever seen with fewer than two heads.