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Found Floorplans
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Outer Rooms
Spoilers Ahead
This page contains spoilers for a Studio Addition. View at your own discretion.
The Vestibule is a Studio Addition in Blue Prince. It serves a similar purpose to the Passageway as a 4-way hallway that costs 2 gems, but its gimmick can reduce key usage when using the room.
Vestibule can be permanently added to the draft pool in the Drafting Studio.
The Vestibule never contains items, even at high luck.
Whenever the Vestibule is entered, the 4 doors are regenerated, with one door locked and the other three unlocked. When opening a door, if there is no room behind it, it allows you to draft a room from that door; if there is already a room there, the door simply opens and allows you to walk through.
Since this is an entry effect, if the desired direction to go to is locked, it is possible to leave the room and reenter it to reroll which door is locked at the cost of 2
.