Buy Mycelium Protocol: Prologue PC Key

When does Mycelium Protocol: Prologue come out? The game has not reached any of the stores we track yet, so there is no price so far. Once the first offers appear we will start recording their history from release day, so later you will be able to see how the price moved from the start. Set an alert and we will write when the game goes on sale.

Release: 17 Sept 2026
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About Mycelium Protocol: Prologue

Mycelium Protocol: Prologue - about the game

Mycelium Protocol: Prologue is a free-to-play adventure visual novel set on PC that blends cyberpunk and biopunk elements in a dystopian world called Kudesh. The story follows Grigore, who once served faithfully as the personal assistant to Mortimarch Sorge under the order of the Great Mycelium, before becoming a Rejected. Players experience several pivotal days in his life through a complete multi-hour narrative that stands alone while setting up the larger Mycelium Protocol story.

Gameplay

The core loop centers on reading and advancing through a linear story presented in visual novel format. Scenes depict everyday routines in the Upper City, the process of symbiotic grafting that integrates fungal elements with human physiology, and participation in debates at a mysterious Club. Neural implants and buried secrets shape the environment, with the narrative exploring how Grigore's world begins to unravel. Decisions made during key moments influence later events that carry forward into the main game, even though the prologue itself leads to one fixed ending. The hand-drawn art style highlights the fusion of advanced technology and organic fungal systems throughout the experience.

Game Modes

This title functions as a singleplayer narrative experience with no separate multiplayer or competitive options. The structure remains linear from start to finish, guiding players through Grigore's origin story without branching paths or alternate routes within the prologue itself. The focus stays on sequential story progression, character interactions, and the gradual revelation of the setting's rules and tensions. Choices appear at select points to reflect personal agency, yet they do not alter the immediate conclusion.

Story and Setting

Kudesh operates under the pervasive influence of the Great Mycelium, a supercomputer-like entity that maintains order through symbiotic relationships and neural enhancements. The prologue introduces the societal layers of the Upper City, where residents navigate strict hierarchies and the consequences of deviation. Grigore's journey reveals the personal cost of loyalty and the hidden fractures in this seemingly ordered system. Fungal symbiotes play a central role in daily life and technology, creating a distinctive atmosphere where biological and digital elements intersect at every level.

Is It Worth Playing?

The prologue delivers a self-contained story that requires several hours to complete and remains available at no cost. It suits players who enjoy focused narrative adventures with atmospheric world-building and character-driven plots. Those interested in biopunk and cyberpunk themes will find the setting's details on symbiotic grafting and neural integration particularly engaging. The carried-over consequences from decisions provide added incentive for anyone planning to continue with the full Mycelium Protocol release. The experience stands on its own merits as an introduction to the universe without requiring prior knowledge or additional purchases.

Interface:
GermanEnglishFrenchRussianSimplified Chinese
Subtitles:
GermanEnglishFrenchRussianSimplified Chinese

Age rating

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FAQ

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Q

Where to buy a cheap Mycelium Protocol: Prologue Steam key or CD key?

Mycelium Protocol: Prologue is free to play! Download it on Steam and start playing instantly.

Mycelium Protocol: Prologue is completely free on Steam. No purchase needed - just download and play. If you are looking for premium DLC or in-game items, check the offers table above.

Our price tracker covers both official retailers and key marketplaces, so you can find Mycelium Protocol: Prologue on sale even outside seasonal promotions. We currently detect 0 active offers 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, Mycelium Protocol: Prologue is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

Yes. Mycelium Protocol: Prologue has an official page on the Steam Store, but we currently don't track any third-party offers with Steam DRM. Check back later or set a price alert.

Not at this time. Valve marks Mycelium Protocol: Prologue 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.

According to our data Mycelium Protocol: Prologue is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Mycelium Protocol: Prologue 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.

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