All passcodes in Once Human

This is your passcode notebook!

In Once Human, obtaining passcodes unlocks valuable resources and further progress the storyline. In this guide, I will give you all the most crucial passcodes for unlocking safes and containers in the game to make your adventure easier.

Full list of passcodes in Once Human

How to open the High Banks safe in Once Human

The High Banks safe, found during your exploration of the city, requires a passcode. While a side quest can lead you to this safe, it's not mandatory for accessing the safe's contents. The passcode "325" opens the safe, offering a stash of high-quality materials beneficial for your base upgrades and crafting.

Located at a road intersection in Western High Banks, the safe sits hidden in a dilapidated storefront, distinguished by a purple light indicating interactability. Inputting the right combination of numbers unlocks the safe, providing a random assortment of valuable resources. Just be sure to look for the cash register to input the required combination, and the safe will automatically open.

Related: How to leave posts in Once Human

How to open the Sunbury Middle School container in Once Human

The container at Sunbury Middle School is part of the "Gift Overdue" side quest and holds significant rewards. The passcode 5897 not only unlocks the container but it also gives you the Beautiful Tattered Letter, a substantial energy link boost of +250, and an experience increase of +140.

Upon acquiring the right passcode combination during the side quest, you can unlock the container to receive the aforementioned rewards, telling an interesting story and adding more of the human touch in Once Human.

Looking for more guides on all things Once Human? You've come to the right place! Have a look at How to get clean water in Once Human and Once Human Patch Notes – Closed Beta Test 3 here on Pro Game Guides!

Luka Rakočević

Luka Rakocevic works as a full-time staff writer at Pro Game Guides and is a new-generation gamer. Backed with old-school gaming knowledge, his oldest gaming memories are on SNES, trying to beat Super Mario. Games are his big inspiration, and he frequently draws from that well to create new art. He prefers narrative-driven games like God of War, Killzone, Half-life, Uncharted and similar. Luka mainly writes science fiction in his free time. When he's not home banging away at his computer keyboard, you will most likely find him at a local pub or a metal concert in the middle of a mosh pit.

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Hristina Matić

Assigning Editor

Hristina Matić is the Assigning Editor at Pro Game Guides, responsible for editorial oversight and content quality across the publication. She holds a Master's degree in English Language, Literature and Culture from the University of Belgrade and has built her foundation in content and editorial work across gaming media before joining PGG, where she has grown into a senior editorial role. A horror specialist first and foremost, Hristina has put hundreds of hours into Dead by Daylight, Outlast, The Last of Us, and Until Dawn, games she returns to repeatedly and knows at a level most guides writers don't. That depth of genre knowledge translates directly to her Roblox coverage, where she focuses on the platform's expanding horror and survival scene: titles like 99 Nights in the Forest, Hunty Zombies, and Paradox (DOORS). She also covers multiplayer action titles including Marvel Rivals, R.E.P.O., and PEAK.

Topics covered: Roblox TDs, Horror Games, Dead by Daylight, Multiplayer Games, Marvel Rivals

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