Call of Cthulhu, by Chaosium Inc., is a role-playing game based on the writings of H.P. Lovecraft and other authors writing using the Lovecraft Mythos.

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Why wouldn’t I just run away from the eldritch horror?

I am struggling with character motivations in Call of Cthulhu or similarly investigative horror settings. For some reason I seem to have issues imagining the reasoning behind characters who really ...
9
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2answers
142 views

Do I need to play the original Call of Cthulhu before Achtung! Cthulhu?

Previously I've wanted to get into Call of Cthulhu, but hadn't ever gotten around to it. I found out about Achtung! Cthulhu, created by Modiphius, which can be played within the Call of Cthulhu world. ...
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What happens if my players capture a cultist at the start of Masks of Nyarlathotep?

I'm about to run Masks of Nyarlathotep for the first time. In the very first scenario, Jackson Elias is murdered by cultists, which kick starts the adventure. However, the scenario assumes that the ...
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Call of Cthulhu V6 Dice

I'm GM of a Call of Cthulhu 6th edition table and I've got a question about dice. Most of the time they're (and I'm) just using dice from my "ol collection" with pretty much every existing standard ...
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2answers
3k views

Call of Cthulhu 6th or 7th edition?

I am trying to put together a couple of Call of Cthulhu games for my local gaming group and to run some games at Mid South Con. Now I am not familiar with the system or anything, I have heard older ...
14
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2answers
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What are the changes between editions?

What changes are there between each edition so that I can update earlier edition modules more easily? I have many modules for Call of Cthulhu that I have picked up over the years but I only own 3rd ...
16
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5answers
922 views

Why the bad guys don't just teleport somewhere drop a bomb and teleport back?

This question could be also How to avoid teleport/drop bomb/teleport back attacks? or How to avoid the use of Dimensional Shamblers as bomb carriers? Background Recently my group of players thought ...
2
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2answers
414 views

What RPG systems are Designed for a “Traditional” Call of Cthulhu Scenario

What RPG systems are there for a traditional Call of Cthulhu adventure (e.g. a basic premise of being investigators in 20th century/modern timeframe within the Lovecraft Mythos)? I know that there is ...
11
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445 views

Lovecraft's Deep Ones and co. in the 21st century

Are there any official (ie. published by Chaosium or its licensees) sources on what the Deep Ones (and, secondarily, similarly "human-scoped" creatures: ghouls, Mi-Go etc) of the Cthulhu Mythos are up ...
10
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1answer
197 views

Metafictional Lovecraft in a Call of Cthulhu campaign

Is there an official stance - expressed in the publications of Chaosium and/or its licensees - on how Lovecraft and his works are incorporated metafictionally into the universe of Call of Cthulhu, if ...
16
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1answer
418 views

Game in which the stars are right

I recall reading the introduction fiction to an RPG years ago, and I'd like to know its name. The game was set on a Mars colony, just barely self-sufficient or possibly slowly dying off. Shortly ...
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Is it plausible to have a Player Character play as a villain against the rest of the party?

If anyone has experience running a game like this, what are some common errors to avoid and tips you would give to a GM embarking on such a campaign? Specifically I intend to have a 3 PC party with 2 ...
4
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1answer
173 views

Narrative options in an antique shop, old bookstore or library [closed]

I'm currently storytelling a Delta Green chronicle and, while studying various resources and scenarios, I was extremely intrigued by a scenario called "The Bookstore". That is a great opportunity to ...
4
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1answer
438 views

Strength and other physical feats in Call of Cthulhu

So, I'm currently running a Call of Cthulhu campaign and I'm trying to determine what to do with something along the lines of feats of strength and whatnot. I came upon a time when a character had to ...
7
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3answers
263 views

Which technologies/commodities were available during the 30s in the USA?

I'm going to GM Trail of Cthulhu and would like to know if there is any site that aggregates this kind of information. I've already found this site http://www.paper-dragon.com/1939/; any other ...
11
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1answer
889 views

Chaosium BRP: What's the difference between “Magic” and “Sorcery”?

I invested in Chaosium's BRP (mostly because I love Call of Cthulu). I am stumbling over this: Mechanically, what are the differences between "Magic" and "Sorcery"? I get the conceptual ...
6
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1answer
335 views

How do Ghosts regenerate POW?

Ghost have rules to spend POW and what happens when their POW reaches zero but not how to regain those spend points. How can they regain POW is their instantiated state? Should it be something ...
9
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3answers
375 views

New GM to a Laundry RPG game [closed]

What should a new (and not so experienced) GM watch out for when starting to run a game set in Charles Stross's Laundry universe? Note that all this could be applied to a Call Of Cthulhu game as well ...
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11answers
832 views

What do I need to change about Call of Cthulhu to set it in the 60s?

I am in the process of planning a CoC game (or Trail of... I've not picked up a copy but it looks interesting) set a long time after the events of the Whisperer in the Darkness. To do so, I wanted to ...
3
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2answers
245 views

What scenarios came in the Fifth Edition core book for Call of Cthulhu?

I've been looking around and can't find this. I'm running a one-shot CoC 6e tonight. I was planning on running The Edge of Darkness, which is in the main rule book, but just found out some of my ...
13
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1answer
736 views

What are the main differences between Call of Cthulhu and Trail of Cthulhu?

I know that Chaosium's Call of Cthulhu is essentially the official Cthulhu RPG, but I've also heard a lot of good things about Trail of Cthulhu (using the GUMSHOE system). They both seem to be ...
12
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3answers
690 views

CoC's Sanity-like rules for the nWoD?

Is there a good adaptation of Call of Cthulhu's Sanity rules to the Storytelling system of the new World of Darkness (possibly replacing Morality)? (Edited the title to make it more precise.)
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15answers
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How can I make BRP less variable?

I like the simplicity of BRP's percentile-based skill system. (Chaosium's Basic Roleplay, or BRP, is the system behind Call of Cthulhu and Runequest, among others.) It makes it trivial for new ...
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1answer
391 views

What are the minimum stats I need for a Call of Cthulhu combat?

When I run Trail of Cthulhu and I need to prepare for a combat quickly, I scribble down something like the following: Gangster: Athletics 10, Health 10 Those are the minimum statistics I need to run ...
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522 views

In Call of Cthulhu, what would you roll to search a room?

In a Call of Cthulhu adventure, a particular clue is concealed in a room. In Trail of Cthulhu, you'd spend a point of Evidence Collection. What would you do in Call of Cthulhu? The rules I have are ...
4
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2answers
356 views

When will the next edition of Call of Cthulhu arrive?

When will the next CoC edition be released? If there hasn't been an official announcement, I'll take hints, rumours, experience with previous editions and calculations.
26
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6answers
561 views

How can I reward Cthulhu characters for going mad?

I like it when, in Cthulhu games, Investigators go mad. With that in mind, I'd like to give some reward for the first Investigator to go mad. For example, perhaps, at the beginning of the next game, ...
10
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5answers
518 views

Which Delta Green books do I need to get started?

Following on from Which Call of Cthulhu books do I need to get started?, I would also like to get into Delta Green. Similar questions, then: How useful will the core book be on its own? Are any ...
12
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6answers
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Which Call of Cthulhu books do I need to get started?

I'd like to get into Call of Cthulhu. Which books do I need? I have a limited budget, so I'd prefer to get as few as possible. Specifically, tell me: How useful will the core book be on its own? ...
10
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3answers
407 views

Which published scenarios use Cthulhu himself?

Cthulhu seems difficult to use in scenarios: not least because, according to Lovecraft's story, it takes a ship to kill him. Which published scenarios feature Cthulhu prominently? I'm mainly ...
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Short ideas for the development of a Call of Cthulhu campaign or brief adventure

Community wiki post. Everyone can add an answer containing a short idea for a campaign, be it an event, a characteristic of the world, an artifact or object, or an NPC character. Fellow masters can ...