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  1. Games
  2. Action Games
  3. Stellar Blade

Stellar Blade Lost Ark puzzle and passcode explained

Guides
By Joel Franey last updated 13 June 2025

The Lost Ark side quest in Stellar Blade has a confusing puzzle around finding a passcode

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Stellar Blade lost ark puzzle
(Image credit: Sony)
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Working through the Stellar Blade Lost Ark puzzle will lead you to a passcode for the locked door in Xion, but it's difficult to open as the puzzle is actually an obscure explanation for discovering a specific terminal sequence, which can then be entered into the console to access the further mission within. If you're struggling to get your head around all of that and work out the password for yourself, then I've laid out the full process below, including the various terminal locations in Xion, and how you use them to solve the Lost Ark puzzle in Stellar Blade so you can find the passcode to get inside.

What is the Lost Ark passcode in Stellar Blade?

Stellar Blade lost ark puzzle

(Image credit: Sony)

The passcode needed to access the Lost Ark as part of Stellar Blade's side mission of the same name is as follows:

  • 0ukaEr / θμκαε𝜸
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This answer comes from a clue left on a document next to the Lost Ark's door, where it mentions "Turn Xion, turn clockwise!" The actual solution to the puzzle is that there's six terminals spread across Xion, each one of which has a single digit of the code displayed on it. To access them all, you need to find them in semi-hidden locations around Xion, and then use the "clockwise" clue to work out that you key in the answers according to the clockwise positioning of the terminals.

Like many chests in Stellar Blade, you can't enter the passcode until Eve canonically knows it - so even if you just look up the code on our guide, you still have to go through the process of finding out the code in-game. Fortunately, we've laid that out below.

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All Lost Ark terminal and clue locations

Stellar Blade lost ark puzzle

(Image credit: Sony)

You actually get a map of the terminal locations with the Lost Ark passcode sections - but only after you find them all, which isn't exactly the optimum time to have it on hand. Still, for clarity's sake, we've displayed it just above for easy reference, as well as descriptions of the terminal's locations just below (in the order you're meant to key in the code).

  • θ - In the top-right alley of Xion.
  • μ - On the right when coming up the stairs North of the hair salon.
  • κ - In the alley that curves North of the Bulletin Board
  • α - At the end of the very first street on your left when entering Xion.
  • ε - On the steps leading down to the Sister's Junk shop.
  • 𝜸 - In the outdoor cafe in the central Xion plaza, on your left when you come up the steps.

Once you have them all operational, enter the code into the Lost Ark terminal to enter and progress the mission accordingly.

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Joel Franey
Joel Franey
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Guides Editor, GamesRadar+

Joel Franey is a writer, journalist, podcaster and Very Tired Man with a BA from Brunel University, a Masters from Sussex University and a decade working in games journalism, often focused on guides coverage but also in reviews, features and news. His love of games is strongest when it comes to groundbreaking narratives like Disco Elysium, UnderTale and Baldur's Gate 3, as well as innovative or refined gameplay experiences like XCOM, Sifu, Arkham Asylum or Slay the Spire. He is a firm believer that the vast majority of games would be improved by adding a grappling hook, and if they already have one, they should probably add another just to be safe. You can find old work of his at Eurogamer, Gfinity, USgamer, SFX Magazine, RPS, Dicebreaker, VG247, and more.

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