Eldritch: The Book of Madness - Pathfinder Edition

Eldritch: The Book of Madness is a 348-page hardcover tome featuring an all-new setting for your Pathfinder (1e or 2e) campaign. It’s filled with new monsters, spells, cults, dark magic, locations, and a horde of otherworldly adventure ideas, all designed to be effortlessly added to any campaign. With all new rules on Dread, madness, and corruption - it's designed to put fear into your heroes - literally!

For years now, we've asked for a Pathfinder version of Eldritch, the Book of Madness. But Stewie over at BlackVault, has been way too busy .

So, with his permission, I've taken his work and redesigned all the monsters to fit into the Pathfinder rules set

An Ancient Legacy: With almost 3000 copies of the original book sold, you're in good hands here.

This is a redesigned version of Eldritch with revised text and, if we reach some stretch goals, all new ghoulish art. There's new things and a lot that is familiar...

THE ULTIMATE HALLOWEEN GIFT

Players Look Away! There is nothing in Eldritch for you! This is a DM's only tome filled with monsters, madness, and corruption. There are many perils in this book, and the greatest conflict awaits - the battle with your own mind!

• Gorgeous art - evocative of the madness-inducing mythology of an alien universe.
  Beautifully written - the Book of Madness is filled with plot hooks and adventure ideas to stir the imagination.
• New Dread rules - wrapped up in an ultra-high fantasy D&D setting. These monsters will fit right in with any setting, from fantasy to sci-fi.
• Monster tactics - gain an insight into how to use these monsters to take your players by surprise. They will never see it coming!
• Unique game mechanics - so secret we can't reveal them here, but they will fit seamlessly in with any game version allowing you to strike fear into the hearts of your players!

WHY SHOULD I SUPPORT THIS BOOK?

Because Eldritch is full of plot ideas, creepy characters, killer creatures, and a whole new fear and Dread mechanic like NOTHING that exists (there's nothing out there like this, it's not like the Cthulhu fear mechanic (or other Dread mechanics doing the rounds).

A lot of love and care has gone into this book to make everything feel real and rounded, and carefully crafted with elaborate descriptions and DM's notes designed to supercharge your imagination. It's NOT a randomly designed series of monsters and spells that could fit any setting; it's specifically designed to all become one coherent part of a much bigger setting (but you can use in any setting).

Ultimately, you should pick up Eldritch if you want a dark horror edge to your game that's filled with rich and evocative opponents. If you want to challenge your players with new monsters and horrific creatures, then this is definitely the book for you!

FEAR AND DREAD

By far the most popular part of the book is Dread. Whenever your heroes encounter the power of the profane, they are tainted by it, gaining Dread, which is not so easy to remove. This Dread can be burned by the creatures of the Dark Place to give them an advantage over your heroes. For instance, it might give them the power to deal extra damage, disadvantage on a certain saving throw, or a much nastier ability.
  Dread adds a monstrous element to battle and a random factor that makes each fight unexpected and far more deadly.

Eldritch can be easily inserted into your game. Want two cults of the most monstrous types? They're all here. Along with examples of other cults and how they fit into the game.

But there's also a campaign setting, filled with 90 pages of locations, characters, and yet more monsters... You can use this content in a single session, or you can spread it out and drag your players into the Wastes, where every night is a torment and even finding a place to capture your breath is a quest in itself.

It's NOT for the faint of heart!

Here's a spoiler-free look at the map of the Wastes. I've removed all of the locations and most of the pertinent information as the map is very spoilery and finding some of the key locations is part of the main quest.

DOWNLOADS

From here you can check out all the juicy snippets of information on The Book of madness.

>>> Into Darkness (the novella that leads the heroes into the Dread Wastes).

SHIPPING

PDFs will be sent via email in March 2026 following closure of the campaign. I will contact you before then to make sure I have your up to date emails.