This Effin’ GM
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thiseffingm.bsky.social
This Effin’ GM
@thiseffingm.bsky.social
GM, Husband, Father (x3), writer, game designer, terrain maker, miniature painter, best seller on DMsGuild. He/Him. Slowly losing my mind

Tiktok and Youtube: Thiseffingmgames
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Hell yes

A pair of expansions for the Shadowdark RPG, delving into the infernal recesses of the Dark Realms

Featuring 3 Player Classes (Bloodguard, Diabolist, and Sin Eater), 4 Ancestries, 30 New Spells, 18 Major NPCs, dozens of minions and artifacts, and a book full of adventures in the Inferno!
Dark Devilry | for the Shadowdark RPG
A pair of fiendish supplements for Shadowdark and the wider OSR space.
www.kickstarter.com
You like random tables?

We love them.

How about dang near a hundred of them, all fiendishly flavored? Here’s an example, locations one might come across in the Twin Demon Lords Lyssa and Lytta’s domain of Ira

(Example is pre-layout)

www.kickstarter.com/projects/158...
November 9, 2025 at 6:36 PM
John’s art is terribly awesome.

He’s working hard to bring to life what only existed as a vague notion in the corners of my mind and he is nailing it

Here’s a video where I show off one of his pieces and butcher his last name

#shadowdark #ttrpg

feature=share
November 8, 2025 at 3:59 PM
When I was writing for this, I was absolutely inspired by Monte Cook’s Book of Vile Darkness 3e

Take the presented passage: it reminds me of the emperor who chains children to his armor.

Worst of the worst for shadowdark: what I strived to offer
November 8, 2025 at 3:40 PM
MY NAME IS IN A BOOK ON MY FLGS SHELF!!!!!!

Bucket list item achieved
November 7, 2025 at 9:58 PM
One of our artists, John Bilodeau, is hard at work bringing the great fiends presented in this book to life!

Check out the current work being done for Namaash, Demon Lord of Lust!
November 6, 2025 at 4:30 PM
Ben Kenobi and Yoda were at best neutral in terms of alignment by the time they met Luke. They’d given up on lofty ideas of honor and nobility, and instead made a desperate gambit to point an emotional bullet at Vader and pull the trigger. Any sin was worth the cost.

I think about this a lot.
November 6, 2025 at 2:48 PM
Next year’s writing goals:

-Lead a project team (in the works?!)
-Make my own Kickstarter project (ALSO in the works?!)
-Write for a system I have yet to touch
-Get invited to contribute to more amazing projects
This year for ttrpg projects I have contributed in some way to:

6 D&D 5e products
4 Shadowdark products
3 OSE products
1 Pirate Borg product
1 Zweihander product

And

7 system neutral products

And I have more in the works.

Hot. Damn. What a year.
November 4, 2025 at 10:43 PM
This year for ttrpg projects I have contributed in some way to:

6 D&D 5e products
4 Shadowdark products
3 OSE products
1 Pirate Borg product
1 Zweihander product

And

7 system neutral products

And I have more in the works.

Hot. Damn. What a year.
November 4, 2025 at 9:05 PM
It’s kickstarter city right now. MY PAL @mkemichael.bsky.social MADE A THING AND IT JUST LAUNCHED AND I AM BACKING IT

It’s a 0-Level gauntlet for #shadowdark and #DCC

Hirelings to Heroes
www.kickstarter.com/projects/mic...
Hirelings to Heroes
0-level funnel/gauntlet adventure for DCC/Shadowdark. Hirelings become heroes who might bring the gods and magic back into the world.
www.kickstarter.com
November 4, 2025 at 6:05 PM
Sigh.

No. They really aren’t. They are patrons in a gallery of unlimited options, picking through what looks best to them.

But even then, not patrons. Because patrons support the artist, this guy is advocating taking the credit.
November 3, 2025 at 11:53 PM
Starting my day off right with my fourth cup of coffee

Check out my nerd mug! This one was made by @visionarypnd.bsky.social , art by Sumeet Vats depicting denizens of Karrnath in the Eberron setting.

It’s one of my favorite mugs now.
November 3, 2025 at 4:45 PM
Why, yes, I am enjoying bullet point adventure design
November 2, 2025 at 6:29 PM
HELL YEAH

Who is ready to crawl through the inferno?

Dark Devilry is a #Shadowdark supplement made to inject fiendish terror into your games. Check it out in the link, some details in the comments
Dark Devilry | for the Shadowdark RPG
A pair of fiendish supplements for Shadowdark and the wider OSR space.
www.kickstarter.com
November 2, 2025 at 2:31 PM
Called Shot Design Procedure

Desire more realism. Make called shot system. Realize head is almost always the best target. Everyone swings at head, regardless of penalties, always chance for critical. Someone asks “what were we aiming at before?”. Realize this is bogging things down. Go back to HP.
October 31, 2025 at 3:51 PM
More #shadowdark tonight playing the Devoured Labyrinth.

Holy CRAP they did so good. Took out a few bandits, made a deal with a DRIFER, one got brutally murdered pissing off a shrine caretaker, another two died purging a shrine of fiends, and one became a LEVELED CHARACTER.
October 31, 2025 at 4:55 AM
Me: “I like this new book”

Them: “That book is shit and woke”

Me:
October 29, 2025 at 10:02 PM
None of you are my real mom.

I don’t care if you married my dad, I’m never calling you that
October 28, 2025 at 8:22 PM
You all, I am sitting right now on a finished draft of the final chapter of The Long Road to the Long Night, a plug and play system neutral campaign I have been writing for @jamesrpgart.com for the past six months.

I am so excited.

Here’s the first in the series
Free Adventure: Cult of The Shattered Keel | James’ RPG Art
Get more from James’ RPG Art on Patreon
www.patreon.com
October 26, 2025 at 6:42 PM
Ok who is really for a HELL of a good time?

Dark Devilry for #shadowdark includes:

🔥 3 Player Classes (Bloodguard, Diabolist, and Sin Eater)
😈 4 Ancestries
🪄 30 New Spells
👹 18 Major NPCs
👾 dozens of minions and artifacts
📖 and a seperate book full of adventures in the Inferno

Check it out HERE
Dark Devilry | for the Shadowdark RPG
A pair of fiendish supplements for Shadowdark and the wider OSR space.
www.kickstarter.com
October 26, 2025 at 4:11 PM
I ran Limithron’s Pirate Borg at GAMEHOLE CON. When people run games for Limithron, there’s a survey people can fill out

Here were the results of my survey as it pertains to my GMing 😃
October 26, 2025 at 3:52 PM
Family: Happy Halloween welcome to the party!

Me: I WROTE THIS BOOK LOOK AT IT THATS MY NAME IN IT
October 26, 2025 at 12:26 AM
I always forget
Dude, what's wrong with you? Don't you know the ttepg books we make aren't actually supposed to be played? Weirdo.
October 25, 2025 at 2:21 PM
Want to read me ramble about my home game, my homebrew world, and the Devoured Labyrinth? Of COURSE you do.
Adventures in Homebrew: The Devoured Labyrinth Gauntlet | This Effin' GM
Get more from This Effin' GM on Patreon
www.patreon.com
October 24, 2025 at 7:54 PM
Map for the first adventure anyone?
October 24, 2025 at 3:46 PM
Three deaths so far. Third of the way through. Hell yes.
I miiiiight be playing a little devoured labyrinth tonight
October 24, 2025 at 3:39 PM