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Demonomicon D&D Supplement 4th (fourth) edition Text Only

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Demons and demon lords for your Dungeons & Dragons® campaign!

Demonomicon™ presents the definitive treatise on demons and their masters, the demon lords. Whether you’re looking to introduce demons into your D&D® campaign or plunge your heroes into the heart of the Abyss, this book has something for you!
 
More than just a maelstrom of chaos and corruption, the Abyss is an exciting D&D adventure locale for paragon- and epic-level heroes to explore. Within its many layers lurk powerful demon lords and fiendish hordes eager to be unleashed upon unsuspecting worlds. This tome brings demons into the world of D&D, updates classic demons to 4th Edition, provides statistics for various demon lords, and introduces dozens of new horrors from the abyssal depths. It gives Dungeon Masters ready-to-use encounters and mechanics to make demons exciting elements in their home campaigns.

Hardcover

First published July 20, 2010

38 people want to read

About the author

Mike Mearls

91 books59 followers
Mike Mearls is the dark hope of chaotic evil: young, handsome, well endowed in abilities and aptitudes, thoroughly wicked, depraved, and capricious. Whomever harms Mearls had better not brag of it in the presence of one who will inform the Demoness Lolth! Has been sent into this area to rebuild a force of men and humanoid fighters to gather loot and restore the Temple of Elemental Evil to its former glory. Of course, Mearls is but one of many so charged, but he is looked upon with special favor and expectation. He and his minions have been careful to raid far from this area, never nearer than three or four leagues, traveling on foot or being carried in wagons of the traders from Hommlet. None of the victims are ever left alive to tell the tale, and mysterious disappearances are all that can be remarked upon, for no trace of men, mounts, goods, wagons, or draft animals is ever found.

Evil to the core, Mearls is cunning, and if the situation appears in doubt, he will use bribery and honeyed words to sway the balance in his favor. He is not at all adverse to gaining new recruits of any sort, and will gladly accept adventurers into the ranks, but he will test and try them continually. Those who arouse suspicion will be quietly murdered in their sleep; those with too much promise will be likewise dealt with, for Mearls wants no potential usurpers or threats to his domination.

(Major points to anyone who gets the above reference)

When not cribbing the bios of well known AD&D 1st edition villains, I'm a game developer at Wizards of the Coast. I work on the Dungeons & Dragons paper and pencil RPG and the Dungeons & Dragons miniatures game.

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Displaying 1 - 3 of 3 reviews
Profile Image for Jean-francois.
53 reviews2 followers
November 16, 2017
Quite an interesting book. It has some good explanations and some great information on demons and demons lord as well as the Abyss. It will be of great use in my campaign.
Profile Image for Mcgwire "Pie".
10 reviews
May 1, 2015
Demons, Devils and monsters, oh my! This large book from a collection of 4e books for the creative game called Dungeons and Dragons really is one of the most creative and interesting of all the creations they have made. The Demonomicon, by Mike Mearls, is a creative masterpiece that introduces terrifying, interesting and creative monsters that bring a new level of excitement to the game. From the map of the demon world and all its glorious horrors, to the demon lords that betray one another to become the ruler and overall the whole story of who each creature is. This book is an interesting one that wouldn't be a favorite to most people, but would be enjoyed greatly by anyone who plays the game.
Profile Image for Garrett Henke.
161 reviews
September 1, 2025
Lots of creative and frightening stuff here - completely appropriate for a book about the Abyss. If there is a weakness here it’s that the monsters are not particularly exciting or well built mechanically (although they are solid enough for use). The locales and general information about demons and the Abyss are fascinating though and more than make up for the semi-lackluster monsters.
Displaying 1 - 3 of 3 reviews

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