MysteryOS

MysteryOS places you inside alien operating systems and asks you to work out how they function. Their menus use invented languages, their interfaces follow unfamiliar rules, and taking a dangerous action can end your run.

Decode the systems

Each level has a constructed alien language with its own grammar, vocabulary and writing system. You use context to piece together its meaning and learn to navigate the operating system. Dangerous actions have warning signs, which you need to learn to read.

Saving progress is also part of the puzzle: the game has auto-checkpoints, but you must discover the real save system yourself.

Difficulty modes

Choose from three modes: Explorer, which lets you take in the atmosphere; Standard, for a balanced challenge; and Hardcore, where consequences are permanent.

Operating system levels

The first level, AXIOM/1, is included. Additional levels are available as DLC content packs, each with a new operating system, language and set of challenges.