About
Wield your magic sword against the monsters that fill a mysterious tower, and uncover the secrets of the past!
Games like Undying Fortress
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Media
Trailers
Releases
Earliest full release on each platform; regional dates can differ.
PC and Steam Deck
Steam store pageMinimum
Recommended
OS
Windows 10
-
Requirements and Deck status as listed on Steam, checked Oct 28, 2026.
Undying Fortress player count
concurrent players on Steam230-day peak
2highest we have seenOct 24, 2026
Oct 24daily peak, last 13 daystoday
Players counted on Steam every one to six hours; the daily peak is the highest count of the day.
Undying Fortress achievements
21 achievements on SteamRarest
You Dropped Something Crash the fortress into the highly populated city of Taeria.
0.8%
Unicorn Hunted Enter into a romantic triad with an established couple.
1.1%
Secret Kiss Witness a tender moment between unexpected lovers.
2.2%
An Imperial Wedding Marry into the imperial family.
4.5%
I Still Have a Heart Make a skeleton blush.
4.8%
I Can't See Without My Glasses Break Vartell's glasses.
5.6%
All 21 achievements by how many players unlocked them
Poked a Corpse Just to make sure it's really dead.
7.5%
Undying Kill none of the Afflicted and bring them all back to life.
8.3%
Royal Blood Do as your princess commands.
9.4%
Second Chance Romance Get back together with the person who broke your heart.
11.5%
Sword and Pen Become a knight-scholar at last.
12.7%
Off With His Head Try to behead a king.
13.2%
The Golden Arrow Help the Silver Arrow gain official recognition from the Crown.
13.7%
Revisionist History Travel back in time to be there for somebody who really needs it.
18.2%
Dark Academia Legalize the study and practice of mortuary magic.
18.5%
Return of the Queen Bring back the heiress to the throne.
22.4%
Nobody Dies on My Watch Leave the fortress with no deaths in the company.
22.5%
The Missing Piece Help make Hani whole again.
23.1%
Wild Tiger Let the Gray Tiger go free.
45.4%
I Know What I'm Doing Impress the assembly with your prowess.
73.5%
What Goes Up Witness the fortress fall from the sky.
81.8%
Share of Steam players who unlocked each achievement.