Fallout 76 was mentioned in the Fallout universe as far back as 2008, a decade before it released in 2018.
Fallout games often delve into the inner workings of various Vaults scattered throughout America, and that's exactly how one veteran Fallout 3 player has made the discovery below. It turns out that a Terminal within the Citadel mentions Fallout 76's Vault 76 as being one of the "seventeen control vaults," which will be run entirely according to Vault-Tec's marketing materials.
