Old School Essentials - Séisme sous la Montagne

OSR Adventure for Old School Essentials: Earthquake Under the Mountain

Terrible rumbles shake the old city: towers crack, houses teeter, and the living fall in numbers. The omen is clear: the mysterious Pharaoh Fish, lurking beneath the mountain, is angered. To avoid total ruin, heroes must descend into the depths, appease the deity, and atone for the city's sins. Under public pressure, the Town Council hurriedly commissions “adventurer experts” to explore the caverns and face the unknown.

Earthquake Under the Mountain is a fantasy module in a point progression (point-crawl) format, designed for an OSR tabletop RPG paced by exploration, tactical decision-making, and risk management. The characters progress node by node through a network of interconnected locations, revealing forgotten rituals, seismic dangers, and ancient secrets tied to the Pharaoh Fish cult. Ideal for Game Masters seeking a modular and immersive adventure, this scenario adapts just as well to an intense session as to a mini-campaign.

Highlights of the OSR Scenario Earthquake Under the Mountain

• Designed for characters of levels 5–6, with challenges befitting a seasoned group.
• Structure in point progression for free exploration and meaningful choices at every fork.
• Atmosphere of dark fantasy blending natural catastrophes, rites of expiation, and threats from the depths.
• Clear hooks for PCs: official mandate from the Council, quest for the city's salvation, pursuit of seismic clues.
• Perfect for a GM seeking a ready-to-play OSR scenario, flexible and rich in memorable encounters.

Compatibility, system and requirements for Old School Essentials

This role-playing adventure module is specifically designed for Old School Essentials. It requires one of the following books: Old-School Essentials Classic Fantasy or Advanced Fantasy. With its clear mechanics and exploration-oriented objectives, it fits perfectly into your existing campaigns or into a ambitious one-shot focused on the city's survival.

Take your players to the heart of an unstable underground network, confront the aftershocks of the earthquake, and appease the anger of the Pharaoh Fish. Earthquake Under the Mountain offers a tense and thematic OSR experience, where every decision counts and where success depends as much on prudence as on courage. An essential RPG scenario to enrich your Old School Essentials collection.