Leave empty spaces between your rooms. Incidents like fires or infestations cannot spread across empty dirt, effectively "quarantining" the problem to a single room.
Managing a vault in Fallout Shelter can feel like a full-time job. Between managing dweller happiness and waiting hours for wasteland explorers to return, the grind is real. If you're looking to speed up your progress without spending a fortune on lunchboxes, here are the most effective (and safest) ways to "hack" your experience. 1. The Time Jump Glitch (Safe & Easy) Fallout Shelter Hack
Add unlimited Lunchboxes, Nuka-Cola Quantums, and Caps. Leave empty spaces between your rooms