Bundle Contents
03Items
Generated entities
Session Prep Bundledungeon-floor
grimy seaside
Recipe: Dungeon Floor
Contextual Narrative
The Brine-Choked Sluice
The air in the Sluice is a thick soup of salt-spray and the stench of decaying kelp. Every step onto the slime-slicked flagstones is a gamble against gravity, while the distant rhythm of the crashing surf echoes through the ventilation shafts like the heartbeat of a drowning god. The stone walls weep with black seawater, and the persistent scratching of thousands of tiny claws behind the masonry keeps the nerves of even the hardiest sailors on edge. What was once a sophisticated series of channels for filtering sea salt has been reclaimed by the ocean’s most wretched denizens. Rusted iron portcullises hang precariously, held by chains half-eaten by corrosion. Deep within the lower chambers, the tide is rising, and with it come the things that belong in the dark, lightless trenches of the deep, now seeking sanctuary in these forgotten, grimy corridors.
Old Salt-Legged Jaren, survivor of the Black Tide
“Watch your footing, boy. In the Sluice, the ocean doesn't just drown you—it digests you piece by piece.”
Dungeon
The Brine-Choked Sluice
A derelict industrial facility half-swallowed by the crashing surf. Rusted machinery and caustic runoff create a lethal environment for intruders seeking the treasures hidden within.
7Rooms
Enemy Presence
Slick-Shell Scavenger
Armored humanoid crabs fused with maritime refuse and pirate equipment.
TypeMonstrosity
HabitatCoastal ruins, flooded sewer systems (The Sluice), shipwreck interiors, and grimy seaside caves.
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Enemy Presence
The Hull-Breaker Behemoth
A gargantuan, salt-encrusted lobster mutated by alchemical runoff and mechanical sludge, acting as the apex predator of a decaying desalination plant.
TypeMonstrosity
HabitatCoastal ruins, industrial sewers, desalination plants.
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Regional Effect
Barnacle Bloom
The walls and floors are coated in razor-sharp barnacles and slippery salt-slick.
Mechanic
Any creature that falls prone takes 1d4 slashing damage; Athletics checks to climb are made with disadvantage.
Connections
Slick-Shell Scavenger
INFESTS • The Brine-Choked Sluice
The Hull-Breaker Behemoth
LAIRS_IN • The Brine-Choked Sluice
The Hull-Breaker Behemoth
ALPHA_PREDATOR • Slick-Shell Scavenger
Quest Objectives
Retrieve the 'Deep-Cask of Arrendale'—a sealed barrel of fine spice lost during a pirate raid into the sluice.
The merchant guild rewards the party with 500gp and permanent passage on their ships.
The spice is contaminated by seawater, ruining the guild's reputation and closing the harbor to the party.
Silence the 'Tide-Scream', a haunting wail emanating from the salt-filters that is driving the coastal town mad.
The madness lifts, and the local priest grants the party a Pelagic Blessing (water breathing once per day).
The wail intensifies, causing the party to suffer a level of exhaustion every night they rest within 5 miles of the coast.