Wield your magic sword against the monsters that fill a mysterious tower, and uncover the secrets of the past!

Undying Fortress is a dark epic fantasy interactive novel by Yeonsoo Julian Kim, author of The Fog Knows Your Name, where your choices control the story. It's entirely text-based—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 being expelled 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 of companions: fighters, spellcasters, and thieves; former friends and mentors from the Academy; even a prince of the realm. Fight off undead monsters to protect Serendal; or learn to wield mortuary magic and get the creatures to do your bidding. Uncover ancient secrets that may shake the realm to its core. 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.
  
• Unlock the secrets of ancient magic, and command the skeletons in the fortress!

The Undying Fortress awaits!