Buy Gray Protocol PC Key

Where can you buy the cheapest Gray Protocol key for PC? Check and compare prices from 1 stores among 1 offers on XD.deals. The lowest Gray Protocol price on keyshops is at £9.29 (0% off).

Release: 22 Feb 2026
Keyshops
Unavailable
Buy in Official Store:
£9.29
Buy in Keyshops:
See price history

Official Stores (1)

DRM:
Steam
Steam
Steam
Gray Protocol
Windows
1w ago
DRM:
Steam
Steam
£9.29

About Gray Protocol

Gray Protocol - about the game
Most of the text in this game was translated using AI.
Scenario 0 and Scenario 1 available for free play!

[Gray Protocol] is a visual novel detective game that deals with incidents occurring in the City-State of Belmarc, where magic and science coexist.

Under the keyword “Clue”,
approach the truth of each case through Investigation · Interrogation · Confrontation · Combination.

You become the City-State’s Fixer, “Orin”,
untangle intertwined clues and confront the truth hidden behind the controlled city.

○ Investigation

Orin’s companions will help you approach the truth with their own unique abilities.

Aera, who possesses the ability to control blood,

reconstructs autopsy results for you by reading information from the corpse without leaving a trace.

Lucan, equipped with a high-performance camera and analytical abilities,

captures subtle visual clues and marks traces that cannot be seen.

○ Interrogation

Interrogate the suspects.

They may sometimes provide new clues and cause each other’s alibis to be questioned.

Or they may refine each other’s alibis even further.

Moirai, who possesses keen senses,

detects individuals who react to specific statements or captures subtle disturbances in false testimony.

○ Confrontation

Based on the clues obtained so far, logically press the suspect.

If you succeed in the confrontation with the appropriate clue, their hidden truth may be revealed.

○ Clue Combination

Clues connect with one another to create “new clues.”
Based on these new clues, you can continue Interrogation, Confrontation, and further combinations.

When all clues are gathered, the truth will reveal itself.

○ Worldview

Belmarc, a City-State where magic and science coexist.
After The Great Cataclysm, Belmarc became a city that could collapse again at any time.
Therefore, it placed “stability” as its highest value.
Risks are eliminated, possibilities are managed, and unpredictable beings are restrained.

Can you push yourself forward within the current of order?

○ Scenarios

You can play five incidents intertwined with magic and science.
Each scenario unfolds independently, with an estimated playtime of approximately 1 hour and 30 minutes per scenario.

Scenario 0, A Dreamlike Bargain

At his teacher’s request, Orin welcomes a girl who entered from outside the City-State.

Her name is Aera.
She possessed incomprehensible power, yet was strangely human.

That meeting, which began as a simple “favor,” soon comes into contact with the darkness of Belmarc.

Scenario 1, The Edge

On their way to the checkpoint, an unexpected incident falls before Orin and his companions.

A mangled corpse, false testimony, and a Cognitus waiting for entry.

In that gray zone where the hand of the law does not reach, judgment was always in someone’s trigger.

Scenario 2, Walking the Line

An audit dispatched to the Association, and two corpses discovered in the restroom.

One person who existed at the same time, in different places.

To follow the truth was always to cross someone’s line.

Scenario 3, What One Wishes to Believe

A victim of uncertain identity

An unconfirmed cause of death

Though we believe in many things as we go on living,
what is it that you wish to believe?

Scenario 4, What Must Be Done

The final incident where controlled justice and personal choice collide.

○ Characters

In Belmarc, a city where magic and science are intertwined, three races coexist.

Humans possess neither magic nor transcendent computational ability,

yet they occupy the center of Belmarc through their remarkable adaptability.

Venerifa, a race that survived the witch hunts of the past,

possess animalistic traits and can wield various forms of magic.

Cognitus, mechanical lifeforms created for war,

were recognized as sentient beings 78 years ago and became members of the City-State.

In Belmarc, where interests clash,

you will resolve various incidents as a Fixer.

Interface:
EnglishJapaneseKoreanTraditional Chinese
Subtitles:
EnglishJapaneseKoreanTraditional Chinese

Age rating

Unavailable

Minimum:

  • OS: Windows 10 (64bit)
  • Processor: Intel Core i3-6100 or AMD Ryzen 3 1200
  • Memory: 4 GB RAM
  • Graphics: Intel UHD Graphics 620 / NVIDIA GTX 750
  • DirectX: Version 11
  • Storage: 2 GB available space

Recommended:

  • OS: Windows 10 (64bit)
  • Processor: Intel Core i3-6100 or AMD Ryzen 3 1200
  • Memory: 4 GB RAM
  • Graphics: Intel UHD Graphics 620 / NVIDIA GTX 750
  • DirectX: Version 11
  • Storage: 1 GB available space
Historical low
Price history from official stores
£2.78
Steam
3 weeks ago
Price history from keyshops
-
-
-

FAQ

8 questions

Before you start looking for a cheap Gray Protocol PC key, check the essentials. Developed by Ctrl Z Crew. Published by Ctrl Z Crew. PC released date: 22 Feb 2026. Genres: Indie, Adventure. Categories: Family Sharing, Single-player, Steam Achievements, Steam Cloud, Custom Volume Controls, Mouse Only Option, Playable without Timed Input, Save Anytime, Touch Only Option.

Q

Where to buy a cheap Gray Protocol Steam key or CD key?

Using our price comparison and verified discount codes, you can buy a Gray Protocol key for as low as £9.29. This deal is available at Steam and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest Gray Protocol price on PC. Check the Gray Protocol price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the Gray Protocol Steam price is £9.29. You can save an extra ~6% by paying with a discounted Steam gift card.

Our price tracker covers both official retailers and key marketplaces, so you can find Gray Protocol on sale even outside seasonal promotions. We currently detect 1 active offer from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, Gray Protocol is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

Yes. Gray Protocol has an official page on the Steam Store. You can also buy a Gray Protocol Steam key from third-party sellers. Our price comparison currently includes 1 offer with Steam DRM. Pick one to ensure your Gray Protocol download happens on Valve's platform.

Not at this time. Valve marks Gray Protocol as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.

Gray Protocol does not appear to be available on PC Game Pass, EA Play, Ubisoft+ or any other PC subscription service at this time. Your only option is purchasing the game - use XD.deals to find the best price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Gray Protocol deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for Gray Protocol

1 Steam Steam Official
£9.29

Want to buy at the best moment? Set a price alert on XD.deals and get notified when Gray Protocol hits its next historical low.

Create Alert
Join our Discord
Get instant help from our community and stay updated on the latest deals
Set Price Alerts
Get notified by email when game prices drop to your target
Create Free Account
Unlock wishlists, price alerts, and Steam sync