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The Fall of Cyrog
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The Fall of Cyrog



Deep in the Underdark, an elder brain Cyrog has died and been reanimated by the Demon Prince of Undeath, Orcus. Brave adventurers will be called upon to help vanquish this evil. Should they fail, Cyrog and all of his mind flayers will be able to create an army for Orcus to unleash destruction upon the Underdark and the world.

In this supplement to Out of the Abyss, your party will explore the lair of an elder brain named Cyrog (aluded to in the official adventure, but never fleshed out). The adventure hooks are primarily linked to Out of the Abyss, but the story may be run as a standalone adventure as well. The adventure contains opportunities for roleplay, exploration, and combat.

The adventure zip file contains:

  • A 14 page PDF dungeon adventure, complete with exciting mind flayer monsters from the Monster Manual and Volo's Guide to Monsters (and possibly Orcus himself). 
  • 6 high-resolution color PNG files of the lair map as well as 1-inch grid battlemaps for 5 of the rooms, such as the Dissection Chamber and Transformation Room. 
  • A printer friendly version of the PDF with a white background. 

Expect 4 to 6 hours of gameplay for a party of 4 to 6 characters, levels 9 to 12. 

The previews below show a sample of the adventure. 

preview 1

Preview 2

NOTE: THIS IS THE PDF VERSION OF THE ADVENTURE, if you are looking for the *Fantasy Grounds* version, click the link below!


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Reviews (6)
Discussions (0)
August 30th, 2021
I ran this adventure yesterday as a one shot and we loved it! My players had a great time playing it and I loved running an Elder Brain! I definitely recommend this module. [...]
July 6th, 2020
This adventure not only looks really professional but was a ton of fun for my players. Everyone gets excited about Mind Flayers and Elder Brains, but it can be really hard to pull off a dungeon for these monsters and I think this adventure does it real [...]
June 21st, 2020
I gave this module 5 stars for the maps and the presentation -- but this is based on the fact that it's a dungeon crawl and that's what you're getting it. But my party who loves RP, rated it as 4 stars because they would have preferred [...]
March 4th, 2020
When I saw this supplement was released for Out of the Abyss I couldn't be more excited. Out of the Abyss is extremely lacking on Mind Flayers and when I read the bits about the undead elder brain in the campaign, I was disappointed that it wasn't part [...]
March 2nd, 2020
I have not had the opportunaty to use this yet. However, it seems well put together and promises to be entertaining. Will follow up when completed. [...]
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File Last Updated:
April 01, 2022
This title was added to our catalog on February 17, 2020.