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A Deadly 5e Adventure of Cosmic Horror & Madness

Survive the frozen wastes, uncover ancient ruins, and escape the Shoggoth in this 5e horror adventure set in the 1930s.

 

The Terror Awakens Beneath the Ice

  •  Play time: 4–6 hours

  •  Level 4

  •  Rule System: 5e Compatible
     

The Story
In 1931, a Miskatonic University expedition uncovered impossible fossils and alien ruins beneath the Antarctic ice before vanishing without a trace. Now, your party must brave the frozen plateau, rescue the survivors, and confront horrors older than humankind. In the depths of a sunken citadel, the ancient Elder Things stir, while a massive Shoggoth hunts in the darkness. Can your players escape the citadel of Earth’s first masters, or will they be consumed by the thing that should not be?

 

What’s Inside

  • 41 pages of Cthulhu Mythos-inspired 5e horror

  • 5 detailed maps of camps, mountains, and subterranean horrors

  • 12 original monsters including the Proto-Shoggoths, Elder Things, and the Shoggoth

  • Unique rules for Antarctic exposure

  • Survival-driven design: Players must use stealth, ingenuity, and sacrifice
     

Part of the R’lyeh Rising Adventure Series
R’lyeh Rising is a collection of Lovecraftian 5e adventures inspired by H.P. Lovecraft’s pulp horror. Each adventure stands alone, or can be played in sequence as a chilling campaign of eldritch dread.


“Your players will be hooked from the frozen runway all the way to the final desperate escape.”


Get It Now

R’lyeh Rising #4: At the Mountains of Madness — 5e Lovecraftian Horror

SKU: RR004
$4.99 Regular Price
$2.99Sale Price

    ABOUT DUNGEON MATTERS

    Dungeon Matters is about giving game masters the tools to tell stories their players will remember. We draw inspiration from the veins of classic fantasy, sci-fi, and horror, the kinds of tales that stay with you long after the last page. Whether you run 5e or any other system, you’ll find something here that sparks your imagination and keeps your players glued to the gaming table.

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