MysteryOS: Puzzle-Survival in an Alien Operating System_

  • AXIOM/1LiveSteam · iPhone · Android
  • AXIOM/2Coming soonSteam · iPhone · Android

What is MysteryOS?

MysteryOS drops you into completely alien operating systems. No tutorials, no hand-holding, no familiar interfaces. The menus are in languages that don't exist. The UI follows rules you've never encountered. And the wrong action can end everything.

Your job? Figure it out. Translate the untranslatable. Navigate the unnavigable. Survive.

How MysteryOS Works

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Alien Operating Systems

Every level is a fully realized alien OS, on your desktop or in your pocket, with its own language, UI conventions, and logic.

ERR: UNKNOWN_FILESYSTEM
>>

Missions & Objectives

Each level has missions to complete: find files, run programs, decode messages. Finish them all to escape the system.

TASK: DECODE.TRANSLATE.ESCAPE
<>

Three Difficulty Modes

Explorer mode lets you take your time. Standard adds a session timer. Hardcore punishes every mistake. Choose how you want to survive.

MODE_SELECT: [E] [S] [H]
##

Real Consequences

Wrong actions destabilize the system. In Standard and Hardcore modes, a session timer adds pressure. Push it too far and the entire OS crashes.

CRITICAL_FAILURE: IMMINENT
!!

No Hand-Holding

No tutorials. A subtle hint system nudges you when you are stuck, but every real discovery is earned through experimentation.

HINT_SYS: PASSIVE_ONLY
★

Badges & Achievements

Each level has its own set of badges to unlock. Complete challenges, find hidden secrets, and push deeper into the system to earn them all.

ACHIEVEMENT: UNLOCKED

Season 1

Three alien operating systems. Each one plays on Steam and on mobile.

Level 1: AXIOM/1

“An ancient terminal. A language no one speaks. You power it on.”

MysteryOS mobile lock screen with alien glyph keypad

The operating system boots in a language no one alive has ever documented. The system is full of files, logs, unfinished work. Figure out what happened here before the system crashes.

On iPhone and Android, the signal lives in a handheld pulled from a wreckage no one will discuss. Twelve alien apps, one hidden terminal, and the slow dawning of what Project ECHO actually was.

Desktop · Steam
LiveFree

10 puzzles inside an ancient terminal.

SteamPlay free
Mobile
LiveFree

12 missions, touch-tuned. 45 to 60 minutes.

Download on the App StoreGet it on Google Play

Level 2: AXIOM/2

Coming soon to Steam and mobile

“The machine is watching you. Every click is scored.”

The paid follow-up to AXIOM/1. Step into NexusOS, a corporate desktop built by an entirely new alien race: the Kron’thul. Three desktops: the Workspace, the Commons, and the Foundation. A compliance system that tracks your every click. And the slow realisation that something older and stranger is bleeding through the cracks.

On mobile it arrives as The Waiting Network. The device you found in AXIOM/1 has been absorbed into the Kron’thul network. It was always watching. Now it has a face.

Desktop · Steam
Coming soonBeta testing now

Paid DLC. 22 story puzzles, 60 puzzle apps, 87 achievements.

SteamWishlist
Mobile
Coming soonThe Waiting Network

Paid expansion, 19 missions. Unlocks inside the free app.

Level 3: AXIOM/3

“The signal was never meant for you. You answered anyway.”

A decaying research station OS built by a splinter faction. Four virtual desktops. A degrading filesystem that corrupts as you explore. A constructed language that shifts grammar rules mid-level. Piece together the fate of the MURMUR signal and decide who hears the truth.

Desktop · Steam
In developmentSignal pending

Paid DLC.

Mobile
In developmentSignal pending

Paid expansion, inside the free app.

Play MysteryOS

AXIOM/1 is free everywhere. Later chapters are paid expansions on the platform you play on.

Desktop

macOS · Windows · Linux, on Steam

  • AXIOM/1 free, ten puzzles
  • Later chapters arrive as Steam DLC
  • 13 Steam achievements in AXIOM/1
SteamPlay free

Mobile

iPhone · Android

  • AXIOM/1 free, twelve missions
  • Later chapters unlock inside the app
  • Fully offline, three hidden mini-games
Download on the App StoreGet it on Google Play

Zero data leaves your device, on every platform. No accounts, no ads, no telemetry.

MysteryOS Screenshots & Gameplay

MysteryOS alien operating system boot sequence
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Transmissions

Patch notes and dev updates, as posted on Steam.