The material presented here is my original creation, intended for use with the GURPS system from Steve Jackson Games. This material is not official and is not endorsed by Steve Jackson Games.
The Call of Cthulhu investigative horror role-playing game, based
on the works of H. P. Lovecraft and his imitators, is produced by Chaosium who hold the licence. The Chaosium game is in its 7th edition at the time of writing, and uses the percentile skill system that will be familiar to Call of
Cthulhu players and those who recall the Basic Roleplaying System (BRP). I heartily recommend the game and this conversion
is certainly not meant as a criticism of the Chaosium original.
|
Image from http://tvtropes.org/pmwiki/pmwiki.php/ TabletopGame/CallOfCthulhu |
I use Chaosium's published campaign and scenario books for the actual GURPS
Mythos campaign, using the conversion guidelines from David Ellis Dickerson's, Cthulhu Lives! Lovecraftian Horror in GURPS, published in Roleplayer No.22 (Nov. 1990). I have also reproduced a substantial part of the article in one of
the downloads to the right.
I was lucky enough to pick up a reprinted 1928 Sears-Roebuck catalogue and use
this as my pricing and equipment list. I recommend this approach if you are able to acquire one. If not, there are numerous
lists available from Chaosium sources if the GM wishes to check the contemporary prices for equipment. Using GURPS's Cost
of Living, however, it is unnecessary to track minor purchases which seem appropriate for the character's wealth and status level.
|
Picture from http://site.pelgranepress.com/trail/files/ wallpaperinvestigator_TOC.jpg |
Scenarios that I have designed and written for my campaign. Feel free to use them
if you wish.
|
Digging Deep: Introductory Meshing Scenario
Digging Deep is a ‘meshing’ scenario, intended and designed to introduce
a new group of players to the setting and system, and to enable the players to establish their characters’ relationships
both with the other player characters and with some important non-player characters.
I recommend that players do not read this scenario unless and
until the GM rules that learning all the spoilers for the NPCs is no longer a threat to the mystery of the campaign.
Digging Deep Handout
|
|
|
An Overview of the Setting
The classic setting for Lovecraft's Mythos tales was the first three decades
of the twentieth century, with the 1920s forming the genre's core period. Most of his characters were from the Northeastern
USA, especially Massachusetts. Whilst many good different settings have
been proposed and supported for games investigating the Mythos, this GURPS conversion is firmly rooted in the period 1919-1939.
The actual campaign will move characters all over the world, but
the starting base is the Northeast USA, especially the cities of Boston and New York, with Lovecraft's Arkham and
its satellite towns such as Kingsport and Dunwich a canonical home location.
|
Original Chaosium map of Arkham |
My Campaign Philosophy
The style of my GURPS Mythos campaign is fairly gritty, as the use of the GURPS
system might suggest. There is no reason why a more Pulp tone could not be taken, but I prefer a game where ordinary people
are drawn into the horror that Lovecraft's Mythos represents. I believe
that the game works best when the players and GM are able to immerse themselves in the setting. Modern campaigns (and I include
the 1920s in that)should not just be about playing linked scenarios, they should also include playing out social interactions
and creating a believable world in which the characters live.
|
Image from https://br.pinterest.com/pin/183451384805956853/ |
|
|
The Downloads
Click on the titles below to open each pdf.
|
1920s Setting
A campaign guide to introduce players to the setting of the USA in the 1919-1939
period. Includes guides to the economic and social background, including suggestions on how to handle the historical racism, sexism
and homophobia that permeated the period.
|
|
Sanity and Insanity
At the heart of gaming the Mythos is
the characters' sanity. I present an alternative way to handle the GURPS Fright Check, splitting checks into Stress and
Sanity tests, and provide new tables. Also covered are the new Hidden Lore: Cthulhu Mythos skill and recovering
sanity.
|
|
Jazz Age Status and Jobs
A fairly lengthy treatment of Cost of Living, Ranks, Social Status and a 1920s-specific
Job table. Included are 147 jobs appropriate for the era, broadly sorted in the same style as Chaosium's Investigators’
Companion Vol. 2.
|
|
Grimoire - to follow
I'll post this when it is complete. To be honest, most CofC spells can
be handled by a GURPS GM without actually needing mechanical rules, just using the descriptions as presented in the Chaosium
sources.
|
|