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Protocol X

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Protocol X

Yiğit Çakman · Published by Yiğit Çakman

Mostly Positive — 70% positive (10 reviews)

Last updated 28 Sept 2026

In the semi-open world horror game Protocol X, you must uncover a dark past in 1975 Germany, survive deadly experiments, save your family and the Weltel family, and race against time in a historical story shaped by multiple endings.

Free to PlayDJCTQ 10

Free

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Action, Adventure, Indie, Free To Play · 2026 · More free games

Explore the chilling world of Protocol X, an action-packed adventure where you navigate through Germany’s 1975 horrors to save your family. Race against time in this free-to-play game from developer Yiğit Çakman.

About this game

1975, East Germany. You are declared an “enemy of the state” based on unknown espionage charges. You, your family, and the Weltel family are abducted by a secret unit of the regime and taken to an illegal, off-the-record underground facility beneath Oreinburg. This is a dark laboratory where experiments known only by the code name Protocol X are conducted.

Chemical and psychological experiments in this facility have spiraled out of control, irreversibly altering human minds and bodies. If you don’t act, you will lose both your family and the Weltels.

Your mission is clear: Descend into the reactor, shut down the system, bypass security protocols, and return to your home in the village by saving everyone. However, this mission leaves your fate entirely to your choices.

This is a historical story shaped by multiple endings: Every decision you make—who you trust, who you save, and how you face the dark truths—will determine your future.

And remember… Getting out of the facility alive is only the beginning

System Requirements

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Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 64 bit
  • Processor: İntel i3
  • Memory: 4 GB RAM
  • Graphics: GTX 750
  • DirectX: Version 10
  • Storage: 700 MB available space
  • Sound Card: Var
  • VR Support: yok
  • Additional Notes: yok

Recommended

Recommended:
  • Requires a 64-bit processor and operating system

Supported Languages

Turkish, English, German

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