Keys, Locks & Elevator Codes - MONOCHROME Wiki
Every key location, the route to the fourth key, and the four-digit elevator panel code explained without the guesswork.
Features
Key Features
Four Key Locations
Each key pinned to its room, with the exact piece of furniture it hides inside.
Elevator Panel Code
The observed four-digit solution, where to type it, and when it stops working.
Fixes for Missing Keys
What to do when a key fails to spawn, a deadbolt sticks, or the panel rejects the code.
Articles
All Keys & Codes Articles
All Four Key Locations
Where each key hides, what searchable furniture looks like, and the order that stops you from walking past the same drawer three times.
Elevator Code & Panel Guide
The four-digit solution, the panel that accepts it, and the three reasons a correct code still refuses to open the elevator.
Code Solver: When the Panel Changes
How the panel solution is actually found, how to confirm it yourself, and the steps to take when a patch quietly rotates the answer.
How to Get the Last Key
Three keys found and the deadbolt wall still sealed: the fourth key is the one players walk past, and this page explains exactly why.
FAQ
Frequently Asked Questions
Is the elevator code a redeem code?
No. It is a puzzle solution typed into an in-game panel. There are no promotional codes that grant items or currency in this experience.
Can the code change between updates?
It can. Puzzle solutions are stored in the level, so any rebuild can rotate them. The check date is shown on the code page.
What if a key does not spawn?
Rejoin the server and check the same spot again. Spawn failures are a known early-development bug rather than a hidden puzzle step.