Cohors Cthulhu Gamemaster's Guide – 2d20 RPG in Ancient Rome
Cohors Cthulhu Gamemaster's Guide – 2d20 RPG in Ancient Rome
Control the course of the Hidden Wars. Take your place as gamemaster of a dark epic RPG set in an age of world-shaking heroes and villains vying to protect or corrupt humanity.
Who This Appeals To
Essential for any GM running Cohors Cthulhu campaigns. Whether you’re building long-form campaigns or one-shot horrors, this guide gives you everything needed to bring the Hidden Wars to life — from faction politics and ancient artifacts to monstrous Mythos creatures and sinister cults.
Features
- Detailed faction information including the history of the Hidden Wars
- Guide to Laurium, the frontier town serving as the ideal base for heroic PCs
- Perspectives on the ancient mindset and divine pantheons to inform authentic gameplay
- Lore and rules for generating legendary artifacts from Atlantis, the Hyperboreans, and Mythos cults
- Four complete spellbooks covering Mormo, Nyarlathotep, Cthulhu, and Yog-Sothoth
- Full adversary roster including dangerous mortals and monstrous Mythos creatures
- Voidforged advancement options for the most experienced, battle-hardened PCs
- Detailed Plot Generator for NPCs, hooks, antagonists, locations, artifacts, and more
What You'll Experience
The supernatural wars are instigated by secretive cabals led by quasi-immortal beings wielding dark magic and Atlantean relics. Some seek to protect humanity — others are fully devoted to the Outer Gods and would see the world burn. Will your players rise to become great legends, or fall to the corruptive temptations of the Mythos Gods? Their fates are in your hands.
