he Rooms is a sub-floor accessed from within The Hotel with different entities and layout that can be explored during gameplay. It is based on another Roblox game "Rooms" by nicorocks5555. It is composed of 1,000 office-like rooms (1,001 rooms including the entrance), with all entities in The Rooms being slightly modified from the original Rooms. There are three entities in The Rooms that are entirely original to DOORS: A-90, which was created by the developers (LSPLASH & RediblesQW), Curious Light, and Glitch, which is from DOORS itself.
Entering The Rooms for the first time and receiving the "Detour" achievement grants access to The Backdoor in the Lobby.
The Rooms, (unlike other floors), can only be accessed via a secret passage at or close to Door 60 in The Hotel. At Door 60, players will encounter a disheveled room with multiple bookshelves and a single closet, with soft tranquil music emanating faintly from the walls. This is the room containing the passage; it is located behind the closet on the right wall. Traversing through the passage will lead to a small room containing a unique painting that when interacted with reads "This painting doesn't seem to have a title" as well as a chain-link gate, that is the same as the gates found in small basement rooms. To open the gate, players will have to go through the next door to find the lever in The Basement (Door 61) and then backtrack to the secret passage. Once there, players can use 2 Lockpicks and a Skeleton Key to unlock the door "A-000". Once interacted with, a 15-second intermission timer (which can be skipped) starts, eventually teleporting all group members to The Rooms. Dead group members who are still spectating will be revived upon entering and exiting The Rooms. When the run has Modifiers activated, the rooms will not work