EVERYTHING YOU NEED for your own 2d20 System campaign of cosmic horror on the Roman frontier, where legionaries and former enemies fight the Hidden Wars against gods that feed on conflict – and failure means insanity and doom
Get the complete COHORS CTHULHU Player's Guide and Gamemaster's Guide, plus LAURIUM ADVENTURES, the GERMANIA ADVENTURE BOOK, the GM TOOLKIT, and the new scenario THE DOOM THAT CAME TO VALLIS – all as non-watermarked, DRM-free .PDF ebooks
COHORS CTHULHU adapts the 2d20 System (also seen in ACHTUNG! CTHULHU and FALLOUT), adding a new Gravitas attribute and melee-focused combat for the age of the gladius
Adventurer! This all-new Cohors Cthulhu Bundle presents .PDF ebooks of Cohors Cthulhu, the 2d20 System tabletop roleplaying game from Modiphius Entertainment of cosmic horror in the Roman Empire. In 165 CE, the long shadow of Rome has so far failed to cover Germania. Those untamed forests are held by fiercely independent indigenous tribes who fight to protect their ways of life. But Germanic priests and sages tell of dark shapes that move amid the trees beyond the town walls. Inexplicable monsters feast on the unwary. Spawn of Mormo swarm in foul breeding sites, protected by cults whose members are visited in dreams by creatures from the stars. The immortal warrior-chieftain Herjan, maddened by his study of Atlantean relics, has gathered his forces to dominate the native Germanic tribes and, from there, to send his armies against Rome. In this ancient land, the Hidden Wars play out. Heroes willing to confront the darkness can claim hidden knowledge and eternal glory – but insanity and doom await those who fail.
Funded in a big October 2023 Kickstarter campaign, Cohors Cthulhu brings Mythos horror to the fringe of the high Empire. At the northern border, heroes from across the lands – Aegyptus, Assyria, Britannia, Gaul, Germania, Hispania, and even eternal Rome itself – face baleful horrors in adventures of intrigue and strife. Centurions and Germanic tribes must band together to stem the invasion of abhorrent creatures from the deep cosmos.
This all-new Cohors Cthulhu Bundle gives you the entire RPG line to date for a price well within reach of any Germanic archer, Aegyptan scholar, Greek courier, and possibly even a Gaul. For just US$14.95 you get both titles in our Cohors Core Collection (retail value $62) as DRM-free ebooks: the complete Cohors Cthulhu Player's Guide and the Gamemaster's Guide.
And if you pay more than the threshold price of $31, you'll level up and also get our entire Cohors Bonus Collection with four more titles worth an additional $83, including the recent scenario collection Laurium Adventures, the Germania Adventure Book, the GM Toolkit, and the brand-new scenario The Doom That Came to Vallis.
...But you pay just $14.95 for both the Cohors Cthulhu Player's Guide and the Gamemaster's Guide. And if you pay more than the current threshold price ($31), you'll level up and also receive all four titles in our Cohors Bonus Collection, including Laurium Adventures, the Germania Adventure Book, the GM Toolkit, and the new adventure The Doom That Came to Vallis.
Bundle of Holding titles are always absolutely free of DRM, so you can move and copy them freely among all your devices.
Muster of the Cohors
Here's what others have paid for our bundle
Number of bundles sold
316
Total contributed
US$9,885.25
Threshold (level-up) price
US$31
To keep the starting threshold price from rising too quickly, we calculated it based on 400 fake sales at US$29.95 each.
THE CHAIN OF COMMAND: Our most generous customers
Legate:HungryCats - US$50
Centurion:Andy Hirth - US$50
Optio:I am Spartacus - US$41
Yet to take the oath:
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Eptatriacontarch Robert ⰁⰀ
Primus Pilus Titus Pullus
Black Jellybean
A Germanic warrior
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Cohors Cthulhu Player's Guide
Designer(s): Douglas Seacat, Matt Goetz, John Houlihan, Nick Brown
Modiphius Entertainment, 233 pages
Retail price US$28
The 233-page Cohors Cthulhu Player's Guide conjures a world of Roman legionaries, of Germanic, Gaulic, and Celtic warriors, of schemers from Greece and Britannia, and archers and mystics from Parthia, Aegyptus, and the island of Hibernia. Forge unlikely bonds with your former enemies to defeat the true menace: the Cult of Mormo, minions of Nyarlathotep and Yog-Sothoth – and of the shattered god Sartothus, whose essence lurks within the very weapons you require to defeat the cults. Join secret organizations like the Fingers of Dawn and Temperari, who possess the knowledge and will to defy the malevolent gods. These groups offer the secrets of mystic arts and access to the legendary weapons of Atlantis.
Full 2d20 System rules, including Fortune & Omens, Reach & Guard, Arms and Armor, Mounts and Vehicles, and Secondary Characters
The Path of Heroes: Build your unique heroic character, choosing from six cultures (Roman, Germanic, Egyptian, Gaulic, Greek, and Foederati), 10 backgrounds, six archetypes (Mystic, Sage, Schemer, Scoundrel, Scout, and Soldier), and 12 specializations – or use Secret Truths, Hidden Talents, and Campfire Tales to save decisions to be revealed later
A powerful magical system embedded in the cultures of the era, with three types of spellcasting: Runic, Oracular, and Celtic
A setting overview, including Correspondence and Rumors, Life in the Empire and Provinces, Religious Pantheons, and timelines
Can you prevail against overwhelming odds, or will you succumb, like so many others, to Mythos forces that thrive on conflict and war? This is your story!
Cohors Cthulhu Quickstart Guide (83pp, free): Deep in the forests of a hostile frontier, unravel the mystery of a village haunted by nightmares its people are compelled to reenact in the waking world. Includes six pregenerated player characters.
Designer(s): Douglas Seacat, Matt Goetz, John Houlihan, Nick Brown
Modiphius Entertainment, 280 pages
Retail price US$34
The Hidden Wars are instigated and controlled by secretive cabals. The most powerful of these are led by quasi-immortal beings who, to extend their lifespan, have turned to dark magic, poorly understood relics, and unholy pacts. Some of these groups are largely benevolent, if pragmatic and sometimes cruel in their mission to safeguard humanity against its greatest foes. Other groups are devoted to the Outer Gods and would see the world burn.
Take your place as gamemaster of an epic RPG set in an age of world-shaking heroes and villains, a land rife with brutal battles, sinister plots, and intrigue, where cosmic horror compels ancient civilizations to rise above old feuds. Shine a light along the borders of an expanding empire encroaching on proud cultures beset by otherworldly threats.
The factions at play, the history of the Hidden Wars, and a guide to the frontier town of Laurium, an ideal base for heroic PCs of all backgrounds
Artifacts of legend, including those built by the fallen Atlanteans, the vanished Hyperboreans, and the lurking Mythos cults
Four spellbooks covering Mormo, Nyarlathotep, Cthulhu, and Yog-Sothoth
Adversaries including potent and dangerous mortals as well as many monstrous Mythos creatures
Advancement options to create Voidforged, the most experienced PCs who have shouldered difficult burdens in exchange for great power
Plot Generator to help create NPCs, Hooks, Plot Concepts, Antagonists, Themes, Goals, Objectives, Artifacts, Locations, and more
Cohors Cthulhu - Laurium Adventures
Designer(s): Various designers
Modiphius Entertainment, 160 pages
Retail price US$20
The lands near Laurium hide many secrets, including a rising swell of Mythos forces eager to corrupt this town. Dark cults lurk both within and outside its palisade walls, serving forgotten and malevolent gods whose goals imperil all of humanity. The few mortal groups knowledgeable enough to oppose such enemies also hide in Laurium, pretending to live ordinary lives while secretly locked in the Hidden Wars.
Laurium Adventures presents detailed information and profiles on many of the most significant NPCs in this frontier region; an Otium rules system for handling downtime activity between major adventures; and seven scenarios:
Vigilia by Harrison J. Chadd and Dave Semark: An investigation into a child-abduction ring reveals a greater plot to empower the Outer God, Mormo.
The Silent Mine by Tyler Omichinski:: A newly opened silver and gold mine conceals the machinations of Mi-go north of the town.
Fabled Herbs by Jeff Provine: Ccultists attempt to corrupt Laurium by enthralling its leaders through the use of an insidious herb.
The Amber God by Cat Evans: A prosperous amber mine brings considerable wealth to Laurium, but a powerful Mythos entity has long been entombed there.
Artifact From the East by Mari Tokuda: Mystics visit from lands far to the east of Rome, and intend to use an Atlantean artifact to advance the goals of the Outer Gods.
Under a Menacing Moon by Simon Kaye and Selena Gray: The disappearance of a Roman centurion reveals a sinister Mythos creature that menaces nearby villages.
Find the Witch by Paul L. Mathews: A clash between mystics in Laurium reveals the threat of a Deep Ones invasion that imperils all of Laurium.
Cohors Cthulhu - Germania
Designer(s): Various designers
Modiphius Entertainment, 200 pages
Retail price US$28
This 185-page Germania Adventure Book presents a wealth of information for Cohors Cthulhu gamemasters running campaigns venturing into Germania from the Roman-occupied town of Laurium, including the many tribes of Germania, details on Herjan's Horde, an expanded Adversary roster, and eight adventures in Germania:
Castrum Primum by Richard August: A lost fortress that has become a place of horror.
Stars of Ill Omen by Stephen Michael Dipesa: An incursion of Mi-go in the Germanic hills.
The Harvest by Anna Everts: A tribal settlement is beset by a mysterious ailment.
The Shield of Aeneas by Thomas Roussel: The impossible return of an ancient hero making wild claims.
Anno Diaboli by Michael Duxbury: An attempt to impose a rigid calendar on a tribal people has unforeseen consequences.
Between Scylla and Charybdis by Dave Semark: A holy festival provides the spark to set ablaze a religious conflict.
Against the Chaos Gate by M.G. Manley: PCs enter the gladiatorial arena and discover an ancient buried peril.
Aurum Habet Tolosanum by Dave Semark: A risky foray into the heart of Herjan's Horde to recover gold stolen from Rome.
Cohors Cthulhu GM Toolkit
Designer(s): Douglas Seacat, Matt Goetz, John Houlihan, Nick Brown
Modiphius Entertainment, 52 pages
Retail price US$20
The Cohors Cthulhu GM Toolkit includes four portrait-oriented printable pages of useful charts and tables, maps for both the Laurium Region and Germania Region, and a .PDF booklet with systems for Hexploration, Regional Random Encounters, and creating Settlements and Strongholds to tame the uncharted wilds. Send your players off the beaten path for an exploration-based campaign with unexpected twists and turns.
Cohors Cthulhu - Doom That Came to Vallis
Designer(s): Nick Lowe
Modiphius Entertainment, 20 pages
Retail price US$15
In the beautiful countryside of northern Italia, far from mighty Rome, sits the town of Vallis. Vallis has enjoyed years of peace and prosperity thanks to its nearby marble quarries. When a mysterious stone spire suddenly erupts there, the player characters uncover a sinister plot threatening the entire Roman Empire. They must stop The Doom That Came to Vallis – an ancient and powerful Ophidian sorcerer performing a dread ritual to awaken an ancient horror, and survive to tell the tale.
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