DERELIKT Door Codes and Keypad Solutions
Every verified DERELIKT keypad, from the 0451 restroom to the Exo Labs server towers, plus which 'codes' are actually physical puzzles.
DERELIKT uses keypads sparingly. Across twelve levels there are fewer than ten, and three of those are optional. The rest of the locked doors open with keycards, crowbars or story flags, which is why so many players search for a code that does not exist.
This page lists only codes that have been verified in the retail game or recorded by preview players on the demo build, with a confidence note on each. Where a "code" is actually a physical puzzle, it is marked as such so you stop looking for a keypad.
The 0451 restroom is part of the Von Neuman Outpost route→, which is where most players meet their first keypad.
Verified keypads
| Location | Code | Level | Confidence |
|---|---|---|---|
| Restroom door, Mainframe | 0451 | 1 | Retail, verified |
| Server room, Exo Labs upstairs door | 1478 | 4 | Demo-era, widely reported |
| Survivor room, Exo Labs | 8465 | 4 | Demo-era, widely reported |
| Operations terminal cheat | BIGHEAD | 1 | Retail, verified |
| Gregory's cargo terminal | Password in his log | 1 | Retail, verified |
| Reactor core door | Code printed on the reactor key | 10 | Retail, verified |
0451: the restroom
The sticky note beside the restroom door in Mainframe reads 0451. The number is a nod to System Shock and Deus Ex, both of which use it as their first keypad. Inside are Shriver's Note 3/13, a medkit, a locker and James Park.
1478: the Exo Labs server towers
Four server towers stand in the server room, each with a stencilled number. Read them in ascending order, not left to right. In the demo build the stencils are 4, 1, 8 and 7, which sorts to 1478.
The upstairs door this opens leads to the level's only rescueable NPC. The code is demo-era; if a patch changes the stencils, sort whatever numbers are actually on the towers.
8465: the sample tubes
The sample room has four racks labelled A to D. Count the tubes with liquid in them, read A to D, and enter the digits. The demo-era value is 8465, which is A=8, B=4, C=6, D=5.
This code opens the survivor room. Dr. Krueger's terminal in the worm lab gives the counting rule.
BIGHEAD: the cheat terminal
The Operations terminal in Level 1 accepts BIGHEAD. It is the Big Head Mode cheat and it unlocks the Cheater achievement (40.0%). There is no penalty for using it, but it does disable nothing and it persists for the session.
Codes that are not codes
Several locked doors are widely described as "code doors" but have no keypad:
- Battery puzzle (Level 3). No code. You carry a battery between two APCs with a lug wrench.
- Reactor puzzle (Level 10). No code. You bring three cooling stations online and then use the reactor key.
- Kitchen door (Level 6). No code. You hit a pot rack with a frying pan.
- Hazmat locker (Level 5). No code. It unlocks after the Squidbull.
- Safe code searches. The station safes open with keycards or keys found in the same room. There is no universal safe combination.
If a video shows someone typing a number into a safe, check whether the video is from the demo build. The demo's safe on Level 1 used a code that does not exist in the retail version.
The two Exo Labs numbers are the only demo-era codes this guide keeps, because both are still reported working in the retail game. Everything else from the demo was changed or removed.
How to solve a keypad you cannot find a code for
The game follows three rules:
- The code is in the same room or one room away. Look for sticky notes, stencils, terminal screens and labels on equipment.
- The code is a property of the hardware, not a secret. The Exo Labs codes are written on the towers and the tubes, not in a note.
- The code is often the sorted order, not the visual order. If a keypad rejects the obvious reading, sort the numbers.
If a keypad still rejects everything, it is probably not a keypad puzzle. Back out and look for a keycard, a crowbar prompt or an NPC.
Keypad locations by level
| Level | Keypads | Codes |
|---|---|---|
| 1 Von Neuman Outpost | Restroom, Operations terminal | 0451, BIGHEAD |
| 3 Anomaly Surface | None | — |
| 4 Exo Laboratories | Server room, survivor room | 1478, 8465 |
| 5 Central Security | Security office (story-locked) | No code |
| 6 Living Quarters | Kitchen (sound), gym (none) | No code |
| 8 Coolant Reservoir | Pump room (valve puzzle) | No code |
| 10 Nuclear Reactor | Core door | On the key |
| 11 Maintenance | None | — |
FAQ
What is the safe code in DERELIKT? There is no universal safe code. Safes open with keycards or keys found nearby.
What is the second door code in Exo Labs? 1478 for the server room door, 8465 for the survivor room.
Is 0451 used again later? It appears as an easter egg on a terminal in Central Security, but it does not open anything there.
Do cheats disable achievements? No. BIGHEAD unlocks Cheater and does not block anything else.
Into Indie Games' station walkthrough documents the 0451 restroom and the Operations terminal independently of this page, which is why both are listed as retail-verified.
Sources and further reading
The pages below are the sources this guide checks against. The store page and the developer's post are primary; the reviews are secondary and are used for enemy names, weapon names and the state of the game at launch.
- DERELIKT on Steam ↗ — the store page, system requirements and the 27-achievement list.
- Visuwyg's announcement post ↗ — the developer's own description of the outpost and the PS1 rendering work.
- Into Indie Games' Von Neuman Outpost walkthrough ↗ — an independent route check for the station section.
Official source: Visuwyg — DERELIKT announcement post ↗, 8 September 2025.
"grafted onto an anomalous derelict asteroid in orbit around Saturn" — Visuwyg, DERELIKT announcement post, 2025