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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:

I am powerless in the face of Bobugbubilz's will!
about 1 month ago – Sun, Apr 26, 2026 at 07:26:36 AM



I need this patch!


I've been thinking about how much I want a "Child of Bobubbubilz" glow-in-the-dark patch, and I don't want to be a Debbie Downer, but I don't think we're going to make it to $17,000.

So, I'm wondering if folks would be willing to pick up the patch as an add-on in the pledge manager for $5.

If we get over 200 "Yes" votes in the attached poll, I'll have some made.




OR, go forth and coerce everyone you know to back the campaign so we reach $17,000!

We could go either way.

Let's add a couple more ways to die!
about 1 month ago – Fri, Apr 24, 2026 at 06:51:50 AM



Let's add 2 more monsters!


Mold and Leeches took round one. The losers are back for round two!

  • Will the Blind Albino Crabs redeem themselves?
  • Will the Gargantuan Olms have their day?
  • Will the dark horse Giant Mutant Bats come from out of nowhere?

Cast your vote to find out!


We've also revealed the next stretch goal: "Reach $17,000 to receive a glow-in-the-dark 'Child of Bobugbubilz' patch!" Now we're getting into the 'spensive stuff!

We're getting VERY close to the $12,500 stretch goal!
about 2 months ago – Thu, Apr 23, 2026 at 09:13:30 AM


Two more monsters are getting closer!


If you were thinking: "I'd totally fork over my hard-earned dough for Mutant Spawn of the Toadmother if there were 14 unique monsters," now is the time to act!

We are very close to achieving the "Reach $12,500 to add 2 more Monster Encounters to the adventure!" stretch goal.

Poisonous Subterranean Mold and Ravenous Troglobitic Leeches won the poll for the previous 2 monsters added to the adventure.

Blind Albino Crabs, Cave-Dwelling Millipede Swarms, Gargantuan Olms, and Giant Mutant Bats want their chance to compete!

Tell your friends and enemies!

Surrender to the Frog of Frogs
about 2 months ago – Tue, Apr 21, 2026 at 07:24:54 AM



Partake in his oily delights!


The campaign has 10 days left! We're 97% of the way to adding 2 more monsters! Check out these cool videos about Mutant Spawn of the Toadmother and some of the other cool third-party publisher Castle Whiterock campaigns!




What's the deal with the Lost Level?
about 2 months ago – Sat, Apr 18, 2026 at 12:50:40 PM



The mega dungeon is even mega-er!


Now that all of the Castle Whiterock campaigns have been funded, the Lost Level is fully open!

Each pledge level for Mutant Spawn of the Toadmother gets you access to the Nerdronomicon lost level encounter 1-4: No Man's Land. Backers at the "Kick us a Buck!" level can add the Lost Level as a physical or PDF add-on.

The Lost Level

Pledge for the Goodman Games Castle Whiterock to get the mysterious map of the Lost Level of Whiterock, then, for every other Castle Whiterock project you support, you'll get full encounter details for one room of the Lost Level!

Pledge for all 13 projects and get the Lost Level, plus complete descriptions of every single room on it!

No Man's Land

In Lost Level area 1-4: No Man's Land, available with the Mutant Spawn of the Toadmother, your players will traverse a maze of tunnels—disputed territory for two brutal subterranean gangs. This encounter, for 5E and DCC RPG, can be dropped into any subterranean adventure, or as part of the fabled Lost Level of Castle Whiterock!