
Start with the former, unlock the latter at 60 dwellers.

Production rooms – Necessary resources for the vault’s survival. Storage room – Just increases your inventory.Living room – The amount of living room space you have determines your maximum dweller capacity, even though dwellers will rarely spend time here.Overseer’s office – An unoccupied room which serves as your mission control room for quests.You will want two elevator shafts eventually as your vault builds up, to provide maximum mobility. Elevator – Chained together to make elevator shafts.Staff your two most butch fighters with their best weapons here to guard against invading raiders. Vault door – You get exactly one, always on the top floor at ground level.Utility rooms – Required for vault function. Rooms can be categorized by function, thusly: Most rooms can be expanded to 3 sections wide and later upgraded. Be careful not to overbuild, because rooms left empty tend to attract disasters. Over time you will need a good balance of rooms to provide stable function levels.


The reductions in times in the table below are linear - each SPECIAL point added that applies to the outfit gives an approximately 1% reduction in time (a +7 outfit would give ~7% reduction).The rooms are what your vault is made of, so plan them carefully. Giving +3, +5, or +7 outfits to your dwellers can significantly reduce production times. For Legendary outfits the cost plays a role for the production time as well. Production time for outfits are based on the rarity of the outfit and the combined SPECIAL lvl for the SPECIAL stat needed for the outfit recipe.
