Vaults are a mainstay of the Fallout franchise, with six of them appearing in Fallout: New Vegas alone. These massive structures were built by Vault-Tec during the Great War, and offered to civilians as an ostensible means of survival during nuclear war.

Of course, the vaults really weren't just glorified anti-radiation bunkers - they were actually used to conduct a wide variety of experiments on the people who called them home. By the time you reach them in Fallout: New Vegas , most of them are in a state of ruin , with terrifying secrets lying just behind the blast door. Here's how the six vaults scattered throughout the Mojave compare, in terms of story, exploration, loot, quest relevance, and more.

6 Vault 21 Is New Vegas' Most Boring Vault

A Cool Gimmick, But What

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