Undying Fortress

Undying Fortress is a 500,000-word, text-based interactive fantasy novel by Yeonsoo Julian Kim, with hundreds of choices and no graphics or sound effects. You play a former Imperial Academy student turned mercenary, wielding your family’s legendary sword, Wicked Fate. When a mysterious fortress that has floated above the kingdom of Serendal for centuries falls, you enter it with a team to explore its secrets, treasures and monsters.

The fortress of Serendal

Your companions include fighters, spellcasters and thieves, among them former friends and mentors from the Academy and a prince of the realm. Inside the fortress, you face skeletons, shambling Afflicted, flying creatures made from bones and other horrors. The fortress is ruled by the Carrion Mother, an ancient deity long suppressed by Serendal’s royal family; you and your companions can uncover secrets the rulers want to keep hidden.

Shape your mercenary

You can play as male, female or nonbinary, and as gay, straight or bi. Choose a specialty in weapons, stealth, magic, negotiation or scholarship. Your choices determine how the story unfolds: you can fight undead monsters to protect Serendal or learn forbidden mortuary magic to command them, reveal ancient secrets or keep them hidden, and seek glory as a swordsman or wealth as a mercenary.

Choices and relationships

You can romance a mercenary comrade-in-arms, a loyal and confident swordswoman, a spellcaster friend turned rival, a trickster prince, a cursed guard or a terrifying necromancer. You can also uncover ancient magic to command an army of skeletons, break the boundaries of time to right ancient wrongs, and cross dimensions to rescue your friends from the land of the dead.