You need living quarters of course, and you'll probably want a lot of storage (more or less depending on how much junk you want to hold at once). They can be useful for helping to grind some objectives though. Radio rooms can be pretty useless as well concerning their main functions, which are attracting new dwellers (they're okay) and raising happiness (they're terrible at this).

The need for RadAways can be eliminated (always have enough water in the vault and have all explorers with 11 endurance or more for radiation immunity) which would make science labs useless. If you don't care about customizing dwellers barbershops will be useless to you. You probably won't be doing much if any crafting early on, but it's probably the best thing late game. Weapon and outfit workshops are very useful, especially late game, as they let you craft tonnes of the best legendary gear. For stimpack and RadAway storage width doesn't matter as it's always 10 more per cell, regardless of how they're connected.Īs for useless rooms, there are a couple, but it depends entirely on your vault. The only rooms that aren't are the medbays and science labs, which are most efficient (production wise) as 2-wide.

Resource rooms, storage rooms, training rooms, living quarters, all of them.

Fallout shelter room size list