How to Download Mayday Protocol

1. Click on the Mayday Protocol 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:

• Requires a 64-bit processor and operating system
  
• OS: Windows 10 64-bit
  
• Processor: Intel Core i3-7100 / AMD Ryzen 5 2600
  
• Memory: 8 GB RAM
  
• Graphics: NVIDIA GTX 1050 Ti / AMD RX 570 (4GB VRAM)
  
• DirectX: Version 11
  
• Storage: 5 GB available space

Recommended:

• Requires a 64-bit processor and operating system
  
• OS: Windows 10/11 64-bit
  
• Processor: Intel Core i5-10400 / AMD Ryzen 5 3600
  
• Memory: 16 GB RAM
  
• Graphics: NVIDIA RTX 2060 / AMD RX 5700 (6+ GB VRAM)
  
• DirectX: Version 11
  
• Storage: 5 GB available space

Linux Requirements

Minimum:

Recommended:

Mac Requirements

Minimum:

Recommended:

The plane is going down. The Pilot sees the cockpit but has no idea how to fix it. The Co-Pilots have the manual but can’t see the screen. Talk fast, think faster, and land safely. Only one copy needed. Communicate or crash.

✈️ Talk Fast Land Safe

A routine flight turns into a fight for survival when critical systems begin to fail mid-air. Flashing warnings, cryptic puzzles, and an unforgiving countdown leave you with only one way out: communication.

Mayday Protocol is an asymmetric co-op puzzle game where communication is everything.
One player takes the role of the Pilot, facing a cockpit full of puzzles with no idea how to solve them. The other players become Co-Pilots, holding a manual that contains all the answers but they can’t see the cockpit.

The Pilot describes what they see. The Co-Pilots make sense of it.
Solve the puzzles before time runs out and the plane survives. Fail… and the outcome is inevitable.

Only the Pilot needs to own the game; Co-Pilots can join using the free manual.

🧠 How It Works

The Pilot sits in a cockpit filled with real flight instruments: gauges, warning lights, and screens displaying puzzles that must be solved. These screens are packed with locked systems, input-hungry controls, and visual clues that demand careful interpretation. Each one corresponds to a solution found in the Co-Pilots’ manual.

The Co-Pilots read the rules and solutions, but must guide the Pilot without ever seeing what’s on screen.

Your only tool is your voice. Describe, interpret, instruct, and execute. Under pressure, against the clock.

⏱️ The Challenge

Every level presents a sequence of puzzles that must be solved before time runs out.
Make too many mistakes? The plane crashes.
Run out of time? The plane crashes.
Stop communicating? You already know what happens.

Real flight instruments, constant tension, and the looming threat of disaster make every second count. From color sequences and frequency tuning to grids and shape-based systems, each level demands flawless teamwork. Time is your enemy. Stay calm, stay focused, and don’t lose the signal.

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