The Laurium Adventures Book for the Cohors Cthulhu RPG is a sweeping campaign supplement that brings the Hidden War to the silver mines and shadowy hills of Roman Laurium - a rich vein of mystery, mythos terror, and political intrigue at the edge of the Empire.

This full-colour hardback expands the Cohors Cthulhu 2d20 game with a series of interconnected adventures, each playable as a standalone scenario or run as a complete campaign across multiple sessions. As your heroes are drawn into the mines and the cults that lurk within, they will uncover lost lore, confront eldritch horrors, and make choices that will shape the fate of a frontier under siege.

• Full-colour hardback campaign supplement for Cohors Cthulhu
• A series of linked adventures playable as standalone scenarios or as a full campaign
• Detailed depictions of the Laurium silver mines, the cults that lurk within, and the surrounding region
• New cults, creatures, allies, and NPCs to populate your games
• New artifacts, locations, and adventure hooks to support continued play in the Cohors Cthulhu setting

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