Guides → Locker Room safe code
Fish Market Locker Room safe code: 1496
Enter 1496 on the Locker Room safe. Do not put that number on the nearby Salt Storage wooden lock.
Where is the safe?
Chapter 4, Arkham Fish Market. After you take the Handwheel from Cold Storage and shut off the Cutting Area steam pipe, a new 1F route opens. The Locker Room safe is in that unlocked stretch — the only optional four-digit safe in the market.
Why the code is 1496, not 14916
Salt Storage uses the first four square numbers as Roman numerals: I, IV, IX, XVI (1-4-9-16). A note in Salt Storage implies the Locker Room reuses that pattern, but a four-digit keypad cannot accept 16 as a single digit.
A second note rules 16 out of the last place, so the last digit becomes 6. The keypad answer is therefore 1-4-9-6.
You can enter 1496 as soon as you reach the safe. Collecting the Salt Storage notes is still useful for Dream Essence and for opening the Salt Storage door (I, IV, IX, XVI).
What's inside
- A grenade-launcher attachment that helps stagger grouped enemies
- Ammunition
You can take this upgrade before you own the launcher. The weapon itself is behind the two-jar starfish door in the Weighing Station; Salt Storage holds the second launcher part.
Video
Video: Gamer Guru on YouTube
Chapter 4 route: Fish Market walkthrough.
Code and reward cross-checked against GameRant, Showgamer and GameSpew. Reviewed 4 September 2026.