The heavy blast door of Vault 1138 hissed shut, sealing the world of fire and ash behind us. We were "Verified," a term Vault-Tec used to describe dwellers who had passed their rigorous, and often invasive, screening. But as the lights flickered to a sterile hum, I realized that being chosen for 1138 was less of a reward and more of a sentence.

“Everybody’s afraid.” August turned and started walking toward the spiral staircase at the far end of A Level. His cane tapped a rhythm on the grated metal floor. “Fear is the mind-killer.”

Cloud Save Incompatibility: Modded versions generally cannot sync with Bethesda.net or Google Play Games, meaning progress is tied strictly to the local device.

“You’ll want to see C Level,” he said. Not a question.

Step 1: Locate the Build Number In-Game

Official Fallout Shelter builds show their version in the bottom-left corner of the title screen. A genuine v1138 would likely deviate from Bethesda’s numbering. If you see "1.13.8" or "1.14.0," that is not v1138. Community v1138 would typically display "Version: v1138 (Modded)" or "Build: 1138V."

“We’d given up,” he admitted. “The surface team stopped reporting six months ago. We assumed—”