The Sinking Keep

Deep within a frozen swamp lies The Sinking Keep—a decaying fortress slowly being consumed by the icy mire. Once a stronghold of power, it now stands partially submerged, its towers crumbling and its walls giving way to the encroaching waters. Within its ruins, legends speak of a powerful magical relic: the Staff of Water-Wielding, an artefact said to command the very forces now threatening to erase the keep from existence.

Lord Nettleworth, a wealthy and influential patron of the explorers’ guild, has issued a desperate call to brave adventurers. He urges immediate action—each day, the keep sinks deeper, and the dangers inside grow more deadly. Time is running out.

Your mission: explore the perilous remains of The Sinking Keep, survive its many traps and enemies, and recover the Staff of Water-Wielding before it is lost forever beneath the swamp.

Will you reclaim the relic and escape in time, or will the fortress take its final breath with you inside?

About The Sinking Keep

The Sinking Keep is a 5E-compatible dungeon crawl designed for level 9 characters. Crafted for easy session prep and smooth gameplay, the adventure unfolds across five distinct sections of the fortress—each with its own hazards, secrets, and tactical opportunities.

Key Features:

Complete Adventure Guide: Includes all the tools and guidance a GM needs to run the adventure with minimal prep.
Narrative Area Descriptions: Ready-to-read text that sets the scene and enhances immersion.
Atmospheric Roll Tables: Dynamic tables for environmental effects and treasure, adding variety and replayability.
Encounter Maps: Three detailed maps to support key scenes and tactical combat.
Lair Actions: Custom mechanics to enhance the final boss battle, adding tension without overwhelming players.
Three Unique Magic Items: Fully statted and ready to drop into your campaign.

This adventure is ideal for experienced players and can be run as a standalone one-shot or seamlessly integrated into an existing campaign.

Offering a balanced mix of exploration, puzzle-solving, and combat, The Sinking Keep delivers a compelling and scalable dungeon experience that will test your party at every turn.