The Great War is over, but peace remains fragile. Across the world, empires struggle to survive, and rival powers compete for influence in the uncertain years between two global conflicts. Steamships cross distant oceans, railways link continents, and daring aviators push into uncharted skies. It is an age of explorers, spies, archaeologists, and adventurers. Yet beneath the surface of history lies a darker reality. Forgotten gods sleep beneath ancient ruins. Secret societies pursue forbidden knowledge. Occult conspiracies operate behind the doors of embassies, universities, and government ministries. Strange forces stir in remote deserts, jungles, and port cities where the modern world collides with mysteries older
than the civilization itself.

Interbellum is a tabletop roleplaying game of pulp adventure, historical intrigue, and cosmic horror set during the turbulent years between the World Wars. Travel from the canals of Venice to the streets of Shanghai, from the deserts of North Africa to the islands of the Pacific. Hunt lost treasures, expose secret cabals, uncover ancient civilizations, and confront powers that challenge humanity’s place in the universe.