What is Malleus Monstrorum?
Malleus Monstrorum is a bestiary guide announced by Chaosium. It is specifically created for their popular tabletop role-playing game, Call of Cthulhu. This comprehensive tome details terrors and entities.
A Call of Cthulhu Bestiary Guide
Malleus Monstrorum serves as an essential bestiary guide specifically tailored for Chaosium’s acclaimed tabletop role-playing game, Call of Cthulhu. This supplement plunges Keepers and players into the terrifying depths of the Mythos, providing an unparalleled resource for encountering the unspeakable. It meticulously compiles ancient secrets, whispered lore, and collected facts about the alien and otherworldly horrors that populate Lovecraft’s universe. As a crucial companion for any Call of Cthulhu campaign, it details the nightmare bringers and the lurkers of the void. The guide aims to enrich the gaming experience by offering comprehensive insights into the myriad creatures that challenge investigators. It’s designed to bring the terrors of the Mythos vividly to life at the gaming table, enhancing the atmosphere of dread and cosmic horror inherent to the game. This authoritative tome is indispensable for those seeking to understand and introduce the monstrous entities that define the Call of Cthulhu experience, making every encounter more impactful and terrifying.
Comprehensive Tome of Horrors
The Malleus Monstrorum stands as a truly comprehensive tome of horrors, a monumental 480-page compendium dedicated to the terrifying entities within and beyond the Call of Cthulhu universe. This extensive guide serves as an unparalleled gateway to understanding the terrors of the void, the nightmare bringers, and countless unspeakable lurkers that haunt the cosmic landscape. It delves deep into ancient secrets and whispered lore, meticulously collecting facts concerning the alien and otherworldly horrors that challenge sanity and threaten existence. Far from being a mere list, it offers profound, chilling insights into the nature of these monstrous beings, documenting their origins, behaviors, and weaknesses. The sheer breadth of its content, providing a wealth of information on every conceivable horror, solidifies its position as an indispensable resource for anyone wishing to immerse themselves in the dreadful depths of cosmic fear. Keepers will find it an invaluable tool for crafting chilling encounters, while players will gain a deeper, albeit terrifying, appreciation for the cosmic foes they face, all meticulously detailed within its extensive pages. This is the ultimate compendium of dread.

Key Content and Scope
This tome supplies a wealth of information, encompassing over 150 entries. It covers Cthulhu Mythos monsters, alien species, creatures from folklore, and animal beasts, along with ancient secrets and whispered lore.

Over 150 Entries
The Malleus Monstrorum PDF features an impressive collection of over 150 distinct entries. This vast number ensures an unparalleled breadth of monstrous adversaries and supernatural phenomena for Call of Cthulhu Keepers. The sheer volume guarantees diverse gameplay, offering encounters from subtly unsettling to profoundly cataclysmic. Each entry provides unique challenges and narrative opportunities, significantly enriching the depth and replayability of adventures; This extensive content establishes the tome as an indispensable resource for crafting intricate plots and genuinely terrifying scenarios. Its widespread scope, driven by these abundant entries, thoroughly explores the Mythos and beyond, solidifying its role as a vital companion for any enthusiast delving into cosmic dread, enhancing every aspect of the game experience;
Cthulhu Mythos Monsters and Alien Species
The Malleus Monstrorum PDF meticulously details an expansive array of Cthulhu Mythos monsters and various alien species. This crucial section plunges into the terrifying entities that define H.P. Lovecraft’s cosmic horror universe, presenting a rich tapestry of unspeakable lurkers and nightmare bringers. Readers will find comprehensive descriptions of otherworldly horrors, each crafted to instill a profound sense of dread and existential terror. The tome compiles ancient secrets, whispered lore, and collected facts concerning these alien beings, illuminating their bizarre origins, incomprehensible motivations, and devastating effects on mortal sanity. From iconic abominations to lesser-known, forgotten entities, the Malleus Monstrorum stands as an indispensable guide to the terrors of the void. It catalogues diverse forms of cosmic evil, ensuring every encounter is fraught with peril and psychological torment, vital for any Call of Cthulhu campaign.
Creatures from Folklore and Animal Beasts
The Malleus Monstrorum PDF extends its comprehensive scope beyond the purely cosmic, delving into a fascinating collection of creatures sourced from earthly folklore and mundane animal beasts. This dedicated section enriches the horror experience by integrating terrifying entities that have haunted human imagination for centuries, alongside more grounded, yet equally dangerous, natural predators. Investigators will encounter detailed entries for beasts rooted in various cultural myths and legends, each imbued with unique characteristics and vulnerabilities that challenge conventional understanding. Furthermore, the guide provides intricate descriptions of formidable animal threats, presenting them with an intensity that elevates their danger within the narrative. This inclusion ensures a diverse range of encounters, allowing Keepers to weave tales that blend the supernatural with the primal, offering a nuanced spectrum of threats. These entries provide essential collected facts and whispered lore, empowering Keepers to surprise players with familiar horrors twisted anew, or unexpected dangers from the natural world, all meticulously cataloged within the tome.
Ancient Secrets and Whispered Lore
Within the Malleus Monstrorum PDF lies a treasure trove of ancient secrets and whispered lore, offering investigators and Keepers an unparalleled glimpse into the terrifying truths of the cosmos. This section meticulously compiles forgotten knowledge and cryptic accounts concerning the alien and otherworldly horrors that lurk just beyond human comprehension. Readers will uncover profound insights into the origins, motivations, and peculiar habits of countless entities, often gleaned from obscure tomes and forbidden rituals. The collected facts presented here illuminate the hidden connections between various Mythos monsters and provide context for their unspeakable actions, transforming mere encounters into profound revelations. These entries delve deep into the shadowy history of the Cthulhu Mythos, revealing information that has been carefully guarded for millennia. Understanding these whispered tales is crucial for survival, as they often hint at vulnerabilities or the true nature of the monstrous lurkers, providing a vital edge against the cosmic dread. This makes the Malleus Monstrorum an indispensable guide for navigating the terrifying unknown.
Collected Facts and Unspeakable Lurkers
This section of the guide meticulously compiles collected facts concerning the alien and otherworldly horrors that populate the Cthulhu Mythos. Readers will encounter detailed descriptions of the unspeakable lurkers, those nightmare bringers from the void whose very existence defies human comprehension. Far beyond mere statistics, these entries provide a comprehensive understanding of each creature’s unique physiology, devastating abilities, and preferred methods of interaction—or destruction. The tome serves as a vital compendium, gathering disparate pieces of information about these entities into a single, accessible resource. From their terrifying appearances to their insidious influence on the world, every aspect of these monsters is explored. This includes not only the well-known Mythos creatures but also lesser-known alien species and monstrous beings from ancient folklore, ensuring a truly exhaustive collection. The gathered facts aim to equip investigators with the knowledge necessary to confront these entities, or at least to understand the terrifying scale of the threats they face. Here, the true nature of cosmic horror is laid bare through carefully documented observations and chilling accounts.

Structure and Volumes
The Malleus Monstrorum is divided into two volumes. Volume I is titled “Monsters of the Mythos,” and Volume II is “Deities of the Mythos.” This structure organizes the extensive content.
Divided into Two Volumes
The Malleus Monstrorum is comprehensively divided into two distinct volumes, providing a structured approach to its vast content. This supplement, comprising a significant number of pages, ensures that the myriad horrors of the Cthulhu Mythos are organized logically. Volume I is explicitly titled “Monsters of the Mythos.” This section meticulously details a wide array of creatures, including alien species and formidable animal beasts encountered within the Call of Cthulhu universe. It serves as an essential guide to the non-deity threats. Following this, Volume II is designated “Deities of the Mythos.” This second volume is dedicated entirely to the cosmic entities, Great Old Ones, and other powerful deities that shape the terrifying lore of the Cthulhu Mythos. This separation allows for focused exploration of both the lesser and greater powers, making it easier to navigate the diverse threats. The dual-volume structure enhances user experience, providing a clear, organized reference for all nightmare bringers and unspeakable lurkers.
Volume I: Monsters of the Mythos
Volume I of the Malleus Monstrorum, specifically titled “Monsters of the Mythos,” serves as the primary compendium for investigators seeking to understand the vast array of creatures inhabiting the Cthulhu Mythos. This volume is packed with detailed entries, providing crucial information on over 150 different entities. It meticulously covers a wide spectrum of horrifying beings, including numerous Cthulhu Mythos monsters and various alien species that lurk in the cosmos. Beyond the purely alien, this tome also delves into creatures derived from ancient folklore, bringing localized terrors into the broader Mythos narrative. Furthermore, it incorporates descriptions of animal beasts, which, while seemingly mundane, can often be twisted or influenced by cosmic forces, presenting unexpected dangers. This volume is an indispensable resource for Call of Cthulhu Keepers and players, offering collected facts and whispered lore about the unspeakable lurkers that are not cosmic deities, but equally deadly threats; Its truly comprehensive nature ensures that no terrifying encounter is left undefined.
Volume II: Deities of the Mythos
Volume II of the Malleus Monstrorum is dedicated entirely to the cosmic entities and supreme beings known as the Deities of the Mythos. This volume meticulously delves into the most ancient and powerful beings that shape the very fabric of reality, or unreality, in the Call of Cthulhu universe. Here, investigators will find collected facts and whispered lore concerning the Great Old Ones, Outer Gods, and other unspeakable lurkers whose power transcends mortal comprehension. This tome provides crucial insights into their mysterious origins, terrifying spheres of influence, and the cataclysmic effects their presence can have on the cosmos and humanity. Unlike the more common monsters found in Volume I, these deities represent existential threats, often beyond direct confrontation, and understanding them is key to grasping the true scale of cosmic horror. Their inclusion ensures that Keepers have comprehensive resources to portray the ultimate terrors of the void, revealing the nightmare bringers and their unfathomable motives. It is an essential guide for navigating the profound, mind-shattering encounters with the true masters of the Mythos.

PDF Specifics and Editions
The Malleus Monstrorum PDF is available at DriveThruRPG for $39.99. It includes the 6th edition and CoC 7e Monster Master Sheets, offering comprehensive digital access to horrors.

PDF Availability at DriveThruRPG
The Malleus Monstrorum is readily accessible in a digital format for enthusiasts of the Call of Cthulhu tabletop RPG. It can be found and acquired directly from DriveThruRPG, a prominent online marketplace for digital role-playing game products. This platform serves as the primary distribution channel for the PDF version, allowing players and Keepers to instantly download this essential bestiary. The availability on DriveThruRPG ensures that the comprehensive guide to Mythos horrors, including both Volume I: Monsters of the Mythos and Volume II: Deities of the Mythos, can be obtained conveniently. Users can access digital files such as “malleus_monstrorum_volume_i_-_monsters_of_the_mythos_v1.25” and “malleus_monstrorum_volume_ii_-_deities_of_the_mythos_v1.28”. Reviews of the PDF are also available, providing insights into its content and utility for game sessions. This digital format offers immediate immersion into the terrifying lore and creatures of the Cthulhu Mythos, making it an indispensable resource for any Keeper preparing to unleash unspeakable horrors upon investigators. Its presence on DriveThruRPG underlines its commitment to digital accessibility for the global gaming community.
Price of the PDF
The digital version of Malleus Monstrorum, available as a PDF, is priced at an accessible $39.99 on DriveThruRPG. This cost provides immediate access to the comprehensive two-volume bestiary, offering a wealth of information on Cthulhu Mythos monsters and deities for Call of Cthulhu Keepers and players alike. Compared to the physical hardcover slipcase edition, which is listed at $89.99, the PDF offers a more budget-friendly option for acquiring the essential lore and stats. This pricing strategy makes the formidable collection of horrors and ancient secrets highly attainable for a wide audience. The investment grants instant download capabilities, allowing users to dive into the unspeakable lurkers and alien species without delay. For those seeking to expand their knowledge of the terrifying void and nightmare bringers, the $39.99 PDF represents a valuable and convenient purchase, ensuring that the collected facts and whispered lore are at their fingertips for game preparation and immersive storytelling, enhancing their campaigns. This makes the extensive content readily available.
6th Edition Malleus Monstrorum PDF
The 6th Edition Malleus Monstrorum PDF offered a vital resource for Call of Cthulhu players. This downloadable book contained essential statistics and detailed descriptions for numerous monsters, powerful gods, and various fascinating elements of the Mythos. It was specifically designed for Keepers running games under the 6th edition rules, providing immediate access to the terrifying entities. The PDF was known for its comprehensive “cool stuff,” from creature stats to background lore, enabling game masters to integrate these horrors effectively. Its availability as a file meant easy exploration of the unspeakable lurkers and divine powers. This edition provided foundational knowledge, empowering users with insights into their forms and abilities. It became a cornerstone for crafting immersive and challenging encounters within 6th edition gameplay.
CoC 7e Monster Master Sheets
The CoC 7e Monster Master Sheet v2 provides essential support for Call of Cthulhu 7th Edition Keepers. This document contains specialized stat sheets for two monsters. Each sheet meticulously includes critical information for immediate gameplay. This covers the monster’s name, comprehensive skills list, and precise damage bonuses for combat. Furthermore, the sheets clearly outline unique spells or otherworldly abilities the creature wields, streamlining introduction into campaign narratives. By centralizing these profiles, the master sheets significantly reduce constant rulebook consultation during play. They enhance the Keeper’s ability to maintain narrative flow, effectively challenge investigators, and manage Mythos entities with greater ease. These tools are indispensable for dynamic, engaging 7th Edition gameplay.

Detailed Monster Information
The Malleus Monstrorum offers comprehensive monster stats and descriptions. It meticulously details names, skills, damage bonuses, and spells for numerous entities, ensuring Keepers have all necessary information at their fingertips.

Monster Stats and Descriptions
This indispensable tome provides an exhaustive compilation of monster statistics, offering Keepers and players alike a deep dive into the horrifying denizens of the Cthulhu Mythos. Each entry is meticulously crafted, featuring comprehensive descriptions that bring the alien and otherworldly horrors to vivid, terrifying life. Beyond mere narrative, the guide includes precise numerical data for every creature. Investigators will find crucial details such as their full names, an array of unique skills they possess, and calculated damage bonuses for their attacks. Furthermore, the volume extensively covers the various unspeakable spells and arcane abilities these entities wield, giving Keepers the tools to challenge their players with unparalleled depth. Whether facing a minor minion or a cosmic deity, the detailed stat blocks ensure accurate and immersive gameplay, enhancing the horror and mystery inherent in every encounter within the Call of Cthulhu universe, from the 6th edition PDF to the 7th edition master sheets.
Names, Skills, Damage Bonuses, Spells

Within the Malleus Monstrorum PDF, including its 6th edition and the CoC 7e Monster Master Sheets, investigators will discover precise details for each horrifying entity. Every entry meticulously lists the creature’s full name, often revealing ancient and unsettling origins, crucial for invoking the true terror of the Mythos. Beyond mere nomenclature, the tome provides a comprehensive breakdown of skills, detailing the unique abilities and proficiencies these monsters possess, from subtle manipulations to overt destructive capabilities. Crucially, the guide clearly specifies damage bonuses for their attacks, allowing Keepers to accurately gauge and apply the devastating impact these creatures can inflict upon unfortunate investigators. Furthermore, a vast array of spells and unnatural powers commanded by these cosmic horrors is cataloged, offering a diverse toolkit of arcane threats. This granular information ensures that every encounter is rich with strategic depth, providing Keepers with the essential data to orchestrate truly memorable and terrifying sessions;

Famous Quotations
The Malleus Monstrorum PDF includes iconic phrases and chilling declarations. These famous quotations are integral to the Cthulhu Mythos, encapsulating cosmic dread and ancient secrets, enriching the immersive horror for readers and Keepers.
“That is not dead which can eternal lie…”
“That is not dead which can eternal lie, And with strange aeons even death may die.” This iconic quote serves as a cornerstone for the Malleus Monstrorum PDF, perfectly encapsulating the terrifying essence of its Cthulhu Mythos monsters. It highlights the unimaginable longevity and dormant menace of cosmic entities whose very existence transcends human mortality. These beings often slumber for untold aeons, merely awaiting their moment, never truly vanquished. This declaration immediately immerses readers in the Lovecraftian ethos, where defeat is often temporary. It reinforces the bestiary’s core purpose: documenting entities defying conventional life and death. The quote fosters a pervasive sense of cosmic futility against immortal, unspeakable threats, a powerful reminder of the eternal horrors populating this definitive tome, enriching the game’s atmosphere of profound dread.