How to Download Protocol X

1. Click on the Protocol X download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS: Windows 10 64 bit
  
• Processor: İntel i3
  
• Memory: 4 GB RAM
  
• Graphics: GTX 750
  
• DirectX: Version 10
  
• Storage: 1400 MB available space
  
• Sound Card: Var
  
• VR Support: yok
  
• Additional Notes: yok

No maximum requirements!!

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

In the semi-open world horror game Protocol X, you must uncover a dark past set in 1975 Germany, survive deadly experiments, save your family and the Weltel family, and race against time in a historical story that offers 7 different endings.

1975, East Germany.

Accused of an unknown act of espionage, you are labeled as “anti-system.” You, your family, and the Weltel family are abducted by a secret state unit and taken to an unregistered underground facility beneath Oreinburg — a place hidden from the public where the covert Protocol X experiments are conducted.

The chemical and psychological tests carried out here have spiraled out of control, leaving irreversible effects on the human mind and body. If you don’t act now, both your family and the Weltel family will be lost.

Your mission is clear:
Descend to the reactor, shut down the system, bypass security protocols, and escape with everyone back to your village home.

But your fate depends entirely on your choices.

This is a historical, story-driven horror experience with 7 different endings — every decision you make, every truth you uncover, and every person you choose to save will shape the outcome.

And remember…
Escaping the facility is only the beginning.

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