The request refers to a specific "verified" vault in the game Fallout Shelter, specifically Vault 1138. In the Fallout universe, Vault 1138 is a common easter egg referencing George Lucas’s THX 1138. While players often use this number for their own vaults, it does not have a "verified" official status or a unique game-breaking mechanic associated with it in the standard game software.

To ensure your Vault survives raids from Deathclaws, Raiders, and Ghouls, you must manipulate the game's pathing using a labyrinth-style layout: The Death Trap Floor:

This guide serves as a highly useful resource detailing how to run a "verified" and successful Vault in Fallout Shelter

Design a custom experiment for your Vault 1138 (e.g., rules for a "monarchy" or "survival" run).

The "1138" Mystery

The number 1138 carries significant weight for Fallout fans. It is a direct reference to THX 1138, George Lucas’s debut film, which has been an Easter egg in countless sci-fi works. In the Fallout universe, 1138 appears as a recurring motif:

In the context of game modding, "Verified" serves two purposes:

Safe was relative.