Back cover from Chaosium's Blood Brothers (1990) - 13 non-Mythos related adventures for the Call of Cthulhu RPG. Cover painting by Lee Gibbons

Front cover from Chaosium's Blood Brothers (1990) - 13 non-Mythos related adventures for the Call of Cthulhu RPG. Cover painting by Lee Gibbons

Back and front covers from Chaosium's Blood Brothers (1990) - 13 non-Mythos related adventures for the Call of Cthulhu RPG. Cover paintings by Lee Gibbons
#ChaosiumInc #BloodBrothers #CallOfCthulhuRPG #TTRPG

Call of Cthulhu RPG advert from 1987

Call of Cthulhu RPG advert from 1987
#ChaosiumInc #CallOfCthulhuRPG #CallOfCthulhu #DeepOne #FlyingPolyp

Run your Call of Cthulhu games like a pro with Syrinscape!

Gain access to our entire Call of Cthulhu library & more with a Sci-fi Subscription. First time subscribers can get 50% off their first month.
🐙 bit.ly/4tp2TM6

@chaosium.bsky.social #CallOfCthulhuRPG

Cthulhu by Gaslight (1998) back cover

Cthulhu by Gaslight (1998) front cover. Cover painting by Tom Sullivan

This was my introduction to Cthulhu by Gaslight (1998). Cover painting by Tom Sullivan
#ChaosiumInc #CallOfCthulhuRPG #CallOfCthulhu #CthulhuByGaslight #TTRPG #RPG #TomSullivan

INSIDE THE MIND with the author of 'The Resort' - Kat Clay
FIND IT HERE - youtu.be/cGojpKZoqwY 👀👂
🎟 www.MiskatonicPlayhouse.com 🎟
#ttrpg #Chaosium #DriveThruRPG #callofcthulhu #callofcthulhurpg #MiskatonicPlayhouse #horror #horrorttrpg #actualplay #horrorfanhttps

Image shows six classic Call of Cthulhu RPG books (and two box sets)

Image shows six classic Call of Cthulhu RPG books

Some classic Call of Cthulhu RPG books
#CallOfCthulhuRPG #ChaosiumInc #Dreamlands #ShadowsOfYog-Sothoth #CthulhuNow #TrailOfTsathogghua #TTRPG

Front cover from The Curse of Cthulhu adventure sourcebook (1990). Front cover painting by Nick Smith. The front cover shows a disfigured, horribly mutated man without a shirt sitting in a chair.

Back cover from The Curse of Cthulhu adventure sourcebook (1990).

Front and back covers from The Curse of Cthulhu adventure sourcebook (1990). Front cover painting by Nick Smith
#ChaosiumInc #CallOfCthulhuRPG #CallOfCthulhu #TTRPG #RPG #HorrorRPG

White Dwarf #72 (Dec 1985). Cover art by Lee Gibbons. The cover shows three investigators - two men and a woman armed with a revolver - huddled together with a light against the darkness. Behind them rears a massive tentacle horror while lightning fills the night's sky

White Dwarf #72 (Dec 1985). Cover art by Lee Gibbons
#WhiteDwarf #ChaosiumInc #CallOfCthulhuRPG #D&D #Dungeons&Dragons #LeeGibbons

2nd Edition Call of Cthulhu RPG advert from 1984

2nd Edition Call of Cthulhu RPG advert from 1984. This was my intorduction to the Call of Cthulhu rpg and to the world of H.P. Lovecraft
#ChaosiumInc #CallOfCthulhuRPG #TTRPG #HPLovecraft

Different Worlds #35 (July/August 1984). Cover illustration by Steve Purcell. The cover shows a man with his mouth wide open in mid scream as he is surrounded by desiccated remains of the walking dead.

Different Worlds #35 (July/August 1984). Cover illo by Steve Purcell
#DifferentWorlds #RPGMagazines #TTRPG #CallOfCthulhuRPG #ChaosiumInc

my Call of Cthulhu character Nora catching her breath after some paranormal investigating. by @jennlumm.bsky.social

An awesome sketch commission drawn by @jennlumm.bsky.social on Instagram of my Call of Cthulhu character Nora catching her breath after some paranormal investigating. Thank you Jen!
##callofcthulhuinvestigator #callofcthulhurpg

They're here. 
"The Howl of the Chimeras", a Victorian scenario for #callofcthulhurpg unlike any you've played before. 

https://f.mtr.cool/quuhcktbki

I realized this morning that my scenario "Without Warning" is less than 25 sales away from hitting Electrum level on DriveThruRPG, which would make it eligible for being made available as a print-on-demand booklet. A perfect single-session RPG scenario for a cold winter night! #callofcthulhurpg

Looking forward to playing and running games later today at the @illusionhorror.bsky.social. I've got #CallofCthulhuRPG and #DeltaGreen on deck.

Yes, I know, this is a ** HUGE ** shift from my regular weekly games of...Call of Cthulhu and Delta Green.

I'm a creature of habit, gimme a break.

Different Worlds #38 (Jan/Feb 1985). "Robot Wars" cover illustration by Steve Purcell

Different Worlds #38 (Jan/Feb 1985). "Robot Wars" cover illustration by Steve Purcell
#ChaosiumInc #DifferentWorlds ##TravellerRPG #CallOfCthulhuRPG #RuneQuest #TTRPG

Doors to darkness: five tales of cosmic dread Five beginner-friendly Call of Cthulhu mysteries pull you into hidden horrors, strange magics, and ancient secrets waiting behind every door.

Looking for some daredevils for my Doors to darkness #TTRPG anthology I will be running on #startplaying. If you're into or would like to start playing #callofcthulhurpg then check it out. startplaying.games/adventure/cm...

#lfgpremium #rpg #lfg

Chaosium's Arkham Unveiled (1990). Cover painting by Lee Gibbons. The book sets on the mock-up Arkham Newspaper that came with the book

Chaosium's Arkham Unveiled (1990). Cover painting by Lee Gibbons.
#ChaosiumInc #CallOfCthulhuRPG #ArkhamUnveiled #TTRPG #Arkham

Chaosium Unveils New Call of Cthulhu 50th Anniversary Slipcase Set Chaosium has recently announced a new Call of Cthulhu 50th Anniversary Slipcase set, which bundles the RPG’s three core products and includes brand new art.

@chaosium.bsky.social has recently announced a new Call of Cthulhu 50th Anniversary Slipcase set, which bundles the RPG’s three core products and includes brand new art. ttrpgfans.com/call-of-cthu... #callofcthulhu #callofcthulhurpg #Chaosium #ttrpg #rpg #hplovecraft #cthulhu #cthulhumythos

2nd Edition Call of Cthulhu RPG advert from 1984

2nd Edition Call of Cthulhu RPG advert from 1984
#CallOfCthulhuRPG #ChaosiumInc #2ndEditionCallOfCthulhu #TTRPG

Inktober2025 Day 30 Word: Vacant Title: Elmer Attains Elder Knowledge #inktober2025 #inktober2025day30vacant #callofcthulhurpg #Mythosknowledge #Cthulhumythos #Inkwash #Ink #Marker

A shorter session than planned, so we’ll need to pick it up to complete - but we had some ‘spooky season’ 🎃 fun last night playing @lynneahardy.bsky.social ‘s ‘Scritch Scratch’ for #CallofCthulhurpg #CallofCthulhu #rpgs #ttrpgs

New Call of Cthulhu Adventure Returns to 1980s Japan The Call of Cthulhu TTRPG returns to 1980s Japan with "The Sutra of Pale Leaves: Carcosa Manifest," a new book featuring four terrifying adventures in Tokyo.

@chaosium.bsky.social's Call of Cthulhu returns to 1980s Japan with "The Sutra of Pale Leaves: Carcosa Manifest," a new book featuring four terrifying adventures set in Tokyo. ttrpgfans.com/call-of-cthu... #ttrpg #TTRPGCommunity #rpg #rpggames #RPGCommunity #callofcthulhu #callofcthulhurpg #Chaosium

Our first Legacy Sponsor shout out goes to Chaosium. We were thrilled to receive one of their Convention Support bundles this year. @Chaosium_Inc
#ttrpg #callofcthulhurpg #Chaosium

Poster image highlighting Chaosium as one of AcadeCon's Legacy Sponsors for 2025

Our first Legacy Sponsor shout out goes to Chaosium. We were thrilled to receive one of their Convention Support bundles this year.
@chaosium.bsky.social

#ttrpg #callofcthulhurpg #Chaosium

Casus Belli #54 (1989) front cover

Casus Belli #54 (1989) front cover #CasusBelli #D&D #Dungeons&Dragons #CallofCthulhuRPG

Today's #MasksofNyarlathotep was quite interesting, because we're so out of the box now. A captive (pc) of cult just escaped by entering into a painting he did, while cats are invading Cairo.
#TTRPG #CallofCthulhu #horror #CallofCthulhuRPG

Tonight we start session 1 of our Masks of Nyarlathotep 7e campaign! I’m so excited to start this journey.
#ttrpg #chaosium #callofcthulhurpg #hplhs

Tonight, we run "The Haunting", a classic Call of Cthulhu adventure. Join us at 8 PM EST. Link in the comments below.

#callofcthulhu #callofcthulhurpg #lovecraft #horrorgaming #ttrpg #actualplayrpg

DriveThruRPG.com - The Largest RPG Download Store! Your one-stop online shop for new and vintage RPG products from the top publishers, delivered fresh to your desktop in electronic format.

Less than a day left in DriveThruRPG’s Cosmic Horror sale and most of what I’ve written for #callofcthulhurpg and Cthulhu Eternal are on sale! legacy.drivethrurpg.com/browse.php?a... #promosky #ttrpg #callofcthulhu

Front cover from Blood Brothers - 13 Tales of Terror for the Call of Cthulhu RPG (Chaosium Inc, 1990). Cover painting by Lee Gibbons

Back cover from Blood Brothers - 13 Tales of Terror for the Call of Cthulhu RPG (Chaosium Inc, 1990). Cover painting by Lee Gibbons

Front and back covers from Blood Brothers - 13 Tales of Terror for the Call of Cthulhu RPG (Chaosium Inc, 1990). Cover paintings by Lee Gibbons #ChaosiumInc #CallofCthulhuRPG #BloodBrothers