Buy Undying Fortress PC

Where can you buy the cheapest Undying Fortress key for {6}? Check and compare prices from 1 stores among 1 offers on XD.deals. The lowest Undying Fortress price on keyshops is at £6.69 (0% off).

Release: 18 Dec 2025
Keyshops
Unavailable
Buy in Official Store:
£6.69
Buy in Keyshops:
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Official Stores (1)

DRM:
Steam
Steam
Steam
Undying Fortress
Windows
+2
1w ago
DRM:
Steam
Steam
£6.69

About Undying Fortress

Undying Fortress - about the game

Can you and your magic sword save the kingdom from death herself? Infiltrate a tower full of skeletons, decipher its secrets, and escape with your team!

Undying Fortress is an interactive dark epic fantasy novel by Yeonsoo Julian Kim, author of The Fog Knows Your Name, where your choices control the story. It's entirely text-based, 500,000 words and hundreds of choices, without graphics or sound effects, and fueled by the vast, unstoppable power of your imagination.

For centuries, a mysterious fortress has floated above the kingdom of Serendal. Now it has fallen—and all of its secrets, treasures, and monsters are within reach.

You have fallen, too. After expulsion from the Imperial Academy cut short your studies as an aspiring knight-scholar, you turned to the life of a mercenary. Wielding your family's legendary blade, Wicked Fate, has won you a certain degree of fame and fortune, but now the ancient fortress presents the opportunity to climb much much higher.

Enter the tower with a motley group: fighters, spellcasters, and thieves; former friends and mentors from the Academy; even a prince of the realm. Within lurk countless skeletons, shambling Afflicted, ferocious flying creatures cobbled together from bones, and more. Commanding them is the fearsome Carrion Mother, an ancient deity long suppressed by the royal family. Only you and your companions will learn the secrets that Serendal's rulers want to keep hidden.

Fight off undead monsters to protect Serendal, or learn to wield forbidden mortuary magic and get the creatures to do your bidding. Uncover ancient secrets that may shake the realm to its core, or keep them hidden and become the power behind a new throne. Win glory with your magic sword and prove that you are worthy of knighthood, or just gather treasure to come out of this the wealthiest mercenary who ever lived.

  • Play as male, female, or nonbinary; gay, straight, or bi.

  • Choose your specialty: weapons, stealth, magic, negotiation, or scholarship.

  • Romance a mercenary comrade-in-arms, a loyal and confident swordswoman, a spellcaster friend-turned-rival, a trickster prince, a cursed guard, or even a terrifying necromancer.

  • Fight bone wolves, shambling undead, and other horrors to reach the heart of a magical fortress.

  • Unlock the secrets of ancient magic to command an army of skeletons.

  • Shatter the boundaries of time itself to right ancient wrongs and cross dimensions to rescue your friends from the land of the dead.

The Undying Fortress awaits!

Interface:
English

Age rating

Unavailable

Minimum:

  • OS: 7

Recommended:

Minimum:

  • OS: 10.13

Recommended:

Minimum:

  • OS: Ubuntu 20.04

Recommended:

Historical low
Price history from official stores
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Price history from keyshops
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FAQ

8 questions

Before you start looking for a cheap Undying Fortress key, check the essentials. Developed by Choice of Games. Published by Choice of Games. PC released date: 18 Dec 2025. Genres: Indie, Adventure. Categories: Family Sharing, Single-player, Steam Cloud.

Q

Where to buy a cheap Undying Fortress Steam key?

Using our price comparison and verified discount codes, you can buy a Undying Fortress key for as low as £6.69. 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 Undying Fortress price on PC. Check the Undying Fortress price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the Undying Fortress Steam price is £6.69. 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 Undying Fortress 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, Undying Fortress is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

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

Not at this time. Valve marks Undying Fortress 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.

Undying Fortress 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 Undying Fortress 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 Undying Fortress

1 Steam Steam Official
£6.69

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