How big can rooms be in Fallout Shelter?
Rooms in Fallout Shelter can be upgraded to a max size of 3 connected units. Start with a single unit and you can expand by building two more of the same type next to it. Bigger rooms are more efficient than several smaller ones since they save space and resources!
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Only 3 wide, but trust me, it's big enough to get your vault thriving. Learned that the hard way by over-expanding too quickly. Manage space wisely!
Maximum of 3. Anything beyond that and you're just building a new room nearby. Efficiency is key!
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