- Store
- Nintendo eShop
- Platform
- Nintendo Switch
- Release date
- 19 Feb 2026
- Publisher
- Prime Games
- Rating
- T
- Availability
- Available now
Beyond the haunted swamps of Golnir lies the Castle of Lost Souls. Challenge Slank, lord of stolen souls.
Beyond the haunted swamps of western Golnir rises the grim fortress of Slank — the arch-fiend who has stolen the souls of mortals for centuries. Now the secret magic to destroy him is known, and your journey into the Castle of Lost Souls begins. Will you break his hold over the dead… or join them?
Based on the newly rewritten 700-section adventure by Dave Morris & Paul Gresty, this DLC brings one of the most iconic Fabled Lands quests into the CRPG with new locations, enemies, mechanics, and treasures.
A Dark Quest Awaits
Venture across cursed marshes, ruined villages, and the demon’s stronghold itself. Descend into the underworld, uncover forbidden rituals, battle corrupted spirits and undead guardians, and gather the tools needed to challenge Slank at the heart of his domain.
THE CASTLE OF LOST SOULS
3 Major Questlines: 50 000 words added to the base game in an interconnected arc culminating in a single high-stakes finale.
40 New Items: Cursed relics, underworld treasures, and powerful rewards tied to the wider campaign.
New Locations: Haunted roads, castle battlements, infernal chambers, and new underworld zones.
New Enemies & Mechanics: Face spectral knights, wraith executioners, chon-chon swarms, lammasu guardians, the Rauchwurm, the Undine - culminating in multiple confrontations with Slank himself.
New Achievements: 10 new achievements for explorers and completionists.
A legendary standalone gamebook - now a fully integrated Fabled Lands CRPG expansion.
The gates of the Castle have opened.
Do you dare enter?
