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Mutant Spawn of the Toadmother for 5E & DCC RPG

Created by Nerdronomicon

Witness the Children of Bobugbubilz, driven into the depths by an angry god, claw for the surface... to feed. For 5E and DCC RPG. Compatible with Castle Whiterock from Goodman Games!

Latest Updates from Our Project:

How Do You Want to Die? Choose Your Monsters!
about 2 months ago – Thu, Apr 09, 2026 at 05:28:44 AM


Which two new monsters do we add to the adventure?


We have quite a selection of horrible encounters filling the pages of Mutant Spawn of the Toadmother. Let's cram in a couple more! We have everything from Blind Albino Crabs to Ravenous Troglobitic Leeches.

The two creatures with the most votes go in the book. Voting ends a week from today, on April 16, at 9:00 AM CDT.

Thank you, thank you, thank you!
2 months ago – Wed, Apr 08, 2026 at 06:21:13 AM



The Toadmother is pleased!


What a first day! It hasn't even been 24 hours, and the Mutant Spawn of the Toadmother has already funded. Not only that, we have met the first stretch goal—"Reach $6,500 to add 2 more Monster Encounters to the adventure!"

Thank you to everyone who has backed the campaign! I am awed by your support. Please let your friends and enemies know about the campaign! We have some awesome stretch goals that you deserve—including a sticker sheet (for physical and PDF pledges) once we reach $8,000!

Don't forget to back our cross-collab project, The Madness of Metronax from Wizards with Laser Rifles, to get a unique sticker sheet! Also, if you back Castle Whiterock and the other Castle Whiterock Collab Projects, you get the fabled Lost Level!

Where are the Warrens?
2 months ago – Thu, Apr 02, 2026 at 08:49:28 AM



The Warrens are where you're from!


Well, maybe not where you're from, but where the harsh brutality of life in the Kingdom of Morrain has put you.

Named for the waves of Warland refugees who settled in the dragon-ravaged ruins of Cillamar, the Warrens are home to the desolate, dejected, and desperate. You, your family, and neighbors survive as best you can by whatever means are available.

Despite the pressures exerted by scarcity, exploitation, and the forces that thrive on desperation, the Warrens are alive with culture and commerce. They are your home.

When your community is endangered, you know that the Lantern Watch won't help, that the One-Eyed Regent casts his blind eye in your direction.

You know that you must face this threat alone.

Gary Con and Beyond!
2 months ago – Wed, Mar 25, 2026 at 11:57:48 AM



What we got up to in Lake Geneva!


Gary Con XVIII was last weekend, and boy, did we have fun! I ran the first-ever playtest of Mutant Spawn of the Toadmother. From what I can tell, people had a good time, but NOT GOOD ENOUGH!

The playtesting will continue until morale improves! Once the campaign concludes, we'll set up virtual playtests for any interested backers. Then we'll put the PDF in your digital hands so you can run it and feed it back to us. I don't think that's how you say it, but that's how I mean it!

Did I mention that playtesters get their names in the book? Well, they do.


What is happening here?!
4 months ago – Tue, Feb 10, 2026 at 10:56:53 AM



Check out this update to get the skinny on the hubbub, bub.


What is Mutant Spawn of the Toadmother?
Mutant Spawn of the Toadmother is a 1st-level 5E adventure and DCC RPG 0-level funnel that can stand alone, or serve as a gruesome introduction to the Castle Whiterock mega-dungeon. Goodman Games generously reached out to those of us active in the third-party publishing world to ask whether we would be interested in producing materials to support their Castle Whiterock campaign.

What is Castle Whiterock?
Castle Whiterock is "a classic castle-themed mega-dungeon. This huge boxed set holds books, poster maps, and more than 700 pages of adventure content. The challenges herein can fuel a campaign for years. The 5E boxed set takes 5E characters from 1st through 15th level, and the DCC RPG edition takes DCC RPG characters from 1st through 7th level." 

What is Mega Dungeon Month?
"For the first time ever, the titans of RPG, Goodman Games, Kobold Press, Monte Cook Games, Ghostfire Gaming, Loke Battle Mats, and Troll Lord Games, descend together into a single, epic collab-funding event. An entire month-long celebration of dungeons at their most dangerous, deadliest, and most dazzling. Expect towering tomes packed with peril, treasure hoards beyond imagining, and unforgettable encounters forged by the greatest minds in modern RPGs."
 
But what is Mutant Spawn of the Toadmother—really?
Mutant Spawn of the Toadmother is a punishingly fun descent into the bowels of the earth. Think Aliens or C.H.U.D. (definitely more on the C.H.U.D. side). 

Players portray a band of refugees and outcasts from the slums of Cillamar, pushed by an uncaring populace to take matters into their own hands. They must venture into the depths below to rescue and avenge their friends and family from the demonic creatures that dwell in the dark.