Twinfinite writes that while Fallout is famous for its many Vaults, settings for mysterious experiments pushing beyond the edges of human decency, Vault 76 is one that has been mentioned fleetingly. They gather the information that we have been told, and combine it with what we’ve learned from the new teaser trailer for Fallout 76 to try and finish a still incomplete puzzle.
Source: N4G PC Vault 76: Everything You Need to Know Before Fallout 76