Imperium Tenebris: The Core Rule Book

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The year is 180 AD. The Roman Empire stands at the zenith of its power, a colossus of marble and iron stretching from the mists of Britannia to the sands of Syria. To the citizens of Rome, this is the Golden Age, the eternal Pax Romana. But the world is older than Rome, and it does not wish to be conquered. Beneath the cobblestones of the Appian Way, ancient things are waking. In the forests of Germania, the trees whisper in human tongues. And in the Senate, men trade their souls for power, opening doors to a void that hungers for the light of civilization.

You are an Intercessor. You are a Centurion with a dented shield, a Senator with forbidden knowledge, or a Thief who has seen too much. You have been cursed with "The Sight"—the ability to see the cracks in reality where the Tenebris leaks through. While the Legions fight visible wars against barbarians, you fight the invisible war against the entropy of the universe. You are the surgical knife used to cut out the rot, fighting a desperate battle to keep the sun from setting on the Empire for just one more day.

Imperium Tenebris is a tabletop roleplaying game of historical survival horror. Powered by a brutal d100 system, it features high-stakes combat, a sanity mechanic that erodes your mind as you witness the impossible, and the "Doom Pool"—a visual pacing mechanic where every failed roll brings the apocalypse closer. Gather your dice, steel your nerves, and prepare to hold the line. The Empire is eternal, but the shadows are long, and they are very, very hungry.