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The Monster Overhaul


What’s a Sphinx without a riddle, or a Minotaur without a labyrinth? What’s a Dragon without a hoard, or a Peasant without a grievance?

The Monster Overhaul is a massive Role Playing Game bestiary designed for at-table utility. Monsters are presented alongside useful tools, ready for immediate use in any scenario.

This book aims to provide a GM with the tools they need, as they need them, without slowing down a session. In the middle of a game, a GM doesn’t need to be told that Bears live in caves or that Ghosts haunt graveyards. They know that. What they need are interesting prompts that are difficult to invent under pressure; names, details, motivations, secrets, riddles, maps, twists, etc.

Numbers are calibrated around old-school fantasy adventure game principles. This book should be compatible with, and has been tested against, the most popular and enduring old-school systems.

This 336 page book contains:

  • 200+ Monsters.
  • 160+ Pieces of original art.
  • 20+ Maps.
  • Random encounter tables, indexes, and a host of other useful tools.

By Skerples, the author of the CoinsandScrolls blog, Tomb of the Serpent Kings, Kidnap the Archpriest, Epochrypha, Magical Murder Mansion, and Magical Industrial Revolution.

Editing by Dai Shugars.

Art by Lucas Roussel, Robin Carpenter, Iguanamouth, Logan Stahl, Ash Rudolph, Nadhir Nor, Crim_Reaper, Naf, Luka Rejec, Erin Kubo, Conor Nolan, Frenden, Scott Wegener, and Dyson Logos.

This product also includes a copy of the Monster Overhaul Artbook.

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Reviews (7)
Discussions (30)
Customer avatar
Sean B July 08, 2024 5:38 pm UTC
I admit I NEVER do any of these damned reviews but I had to for this one. I was making my first GM Toolkit (New to the B/X AD&D 1E and 2E GM Scene) for Old School Essentials to play with my wife and kids and stumbled upon a reference on how awesome wizard's were in The Monster Overhaul in a video I believe the youtuber's name was Redmage GM (Sorry if I meesed it up). I then went to check quite a few reviews to have myself conviced I should get it to help add to the immersion for the kids further down the line, well well well I was NOT dissapointed when I jumped to look at Goblins (Warhammer Grot junkie here :P) and started looking at the tables and lore to generate these wonderous creatues. Skerps I wont say anymore but seriously this maybe the best gobbo book I have ever found (Sorry Geedubs lol) to make these little buggers. 10/10 Do yourself a favour and treat yourself with this great book every new and veteran player should have.
Customer avatar
Ash H April 19, 2024 7:41 pm UTC
Will there be a PRint on Demand option? I would have to print the pdf to even use this....
Customer avatar
Damian D June 17, 2024 12:19 am UTC
Probably not for a while, the publisher is still reprinting and selling the hardcover versions.
Customer avatar
Lesley N March 20, 2024 10:12 pm UTC
How to describe it so gamers really know what I mean...

Remember the original DMG and how incredible it is... This is how the monster manual should have been released :)

So many levels of OMG.
Customer avatar
Iain R February 22, 2024 1:46 pm UTC
Any idea when Soul Muppet will stock more hard copies to sell in the UK?
Customer avatar
Christopher S February 06, 2024 3:39 pm UTC
What is the licensing on content from this book? Say I wanted to use a monster from it in a commercial module, is that legal? Is attribution enough or should I just take it as inspiration for my own creation? I didn't see any specific licensing information in the book, but I have not dug in too deep yet - awesome stuff!
Customer avatar
Beau Y December 12, 2023 2:12 am UTC
I purchased this in hard copy, so it doesn't look like I can leave a review here.

This is, without a doubt, the best monster manual for OSR. Probably the best monster manual that's ever existed, assuming that your focus is on in-game utility, rather than as a book of lore (although there's a surprising amount of that hidden in the random tables here as well).

It's great for pregenerating an adventure, but it really shines when the players decide their characters are going in a completely different direction than you expected. Oh, you need a town to be over the next hill? Easy. The group decided to take a short cut and go confront the lich, months earlier than you expected them to? This book can generate a memorable unique lich in a matter of seconds, down to his mind-shattering plans that are centuries in the making. The players have decided they're bored with your ship voyage adventure and destroy the ship around their own ears? Great, there's all you need to run an adventure inside...See more
Customer avatar
Matt Y December 07, 2023 1:27 am UTC
Just got the physical book and it is amazing! Is there any way to get just the lair maps in jpeg or pdf form apart from the document?
Customer avatar
Matthew H August 19, 2023 1:18 am UTC
Wonderful book but where are the demons?
Customer avatar
Patrik L August 15, 2023 4:17 pm UTC
This is so wonderful, please think about a German version :)
Customer avatar
Dale C July 25, 2023 9:27 pm UTC
Will we be able to get hardbacks of this again after the KS copies have all arrived?
Customer avatar
Patrick G July 31, 2023 3:42 am UTC
Good question.
Customer avatar
Skerples (CoinsandScrolls) . August 01, 2023 3:40 am UTC
Copies are now on sale via Indie Press Revolution (US) and Compose Dream Games (Canada), and will be on sale shortly via SoulMuppet Publishing (UK/EU).
Customer avatar
Glenn R July 11, 2023 1:00 am UTC
Which is the most up-to-date file for printing? The final_2 pdf, or the artbook pdf. I don't want to presume it's the one marked final_2.
Customer avatar
Lucas B July 02, 2023 8:58 pm UTC
Will you make new physical copies sometime? Just stumbled over this gem and would love to read it "hands on".
Customer avatar
Tyler B May 30, 2023 11:25 pm UTC
Would this be compatible with osr games like mork borg or DCC?
Customer avatar
Beau Y June 19, 2023 11:28 pm UTC
Yes. It's an OSR bestiary and doesn't use specific numbers for armor class, for instance, but just says "as chainmail" or "as plate," and lets the DM fill in the blanks. Hit points and damage are spelled out, but should be compatible with the power scale of pre-WotC D&D games.
Customer avatar
James C May 06, 2023 1:55 am UTC
For what it's worth I too vote for a hardcover print version. Will purchase immediately.
Customer avatar
Michael G June 23, 2023 11:28 am UTC
Should have been in on the kickstarter. The hardcover is beautifully done.
Customer avatar
H.K. M April 07, 2023 3:31 am UTC
Great work, would love a print version of this
Customer avatar
Sean C March 14, 2023 7:02 pm UTC
Amazing! Any chance there will be a discounted print version later for people who buy the PDF now? (I’m buying it either way, but…)
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File Last Updated:
April 18, 2023
This title was added to our catalog on February 13, 2023.