Call of Cthulhu

CoC · Call of Cthulhu TTRPG · Cthulhu

Call of Cthulhu

Call of Cthulhu is investigative horror set in the Cthulhu Mythos. You take on the roles of librarians, detectives, and scholars who pursue strange clues and confront things that humanity was never meant to understand. The stories centre on creeping dread, clever choices, and the cost of curiosity. Death is a possibility, as is losing your grip on reality. It’s ideal if you seek mystery with substance, grounded characters, and a slow build-up. It firmly belongs in cosmic horror, where knowledge is perilous and victory often means merely surviving the night.

A session feels like a sharp detective story that becomes increasingly unsettling. Your group interviews NPCs, sifts through records, explores eerie locations, and tests their resolve when the unknown emerges. Tension builds through atmosphere and roleplay, rather than endless combat. It’s suitable for newcomers and veterans alike, small birthday groups, and company teams who enjoy solving problems collaboratively. A professional Game Master establishes the tone you desire, from pulp-inspired action to bleak dread, while ensuring that adult themes are handled respectfully. Expect a cinematic, collaborative thriller that you will discuss long after.

How to play Call of Cthulhu

The core mechanic uses percentile dice. Each skill has a percentage. You roll two ten-sided dice to create a number from 1 to 100, succeeding by rolling equal to or under your skill. More challenging tasks require better results. The Game Master calls for Sanity rolls when the unnatural intrudes. Success keeps you steady, while failure costs you composure, making choices riskier. Combat is quick and dangerous, so investigation, planning, and escape are crucial. You can push some failed rolls for another attempt at greater risk, and the GM may add bonus or penalty dice depending on the situation.

Players bring curiosity, a character concept, and a willingness to take notes and follow leads. A professional Game Master prepares locations, suspects, timelines, and handouts, and runs NPCs with nuance. In a one-shot lasting about 3 to 4 hours, expect a tightly woven mystery with clear stakes and a decisive conclusion, often with high danger. Campaigns develop slow-burn conspiracies, recurring allies and foes, and long-term consequences for body and mind. Your GM can adjust pacing, clue density, and scare level to suit your group. Learn about different GM playstyles to find what suits you best.

Game Master gestures excitedly while players move miniatures during a tabletop roleplaying encounter.
Game Master gestures excitedly while players move miniatures during a tabletop roleplaying encounter.
A red, marble-textured ten-sided dice showing the numbers 5 and 9 in gold, used for tabletop RPG adventure games.
A red, marble-textured ten-sided dice showing the numbers 5 and 9 in gold, used for tabletop RPG adventure games.

Common questions

Do I need to know the rules to play Call of Cthulhu?

No. A professional Game Master will teach you the essentials in just a few minutes and keep the game flowing. You roll percentile dice, compare them to your skills, and follow the clues. We can provide pre-generated investigators or assist you in creating one quickly. If you have played D&D or other RPGs, transitioning to investigation-focused gameplay is straightforward. You bring curiosity and a willingness to take notes. The GM manages the rules so you can concentrate on your choices and the atmosphere.

Which edition will we use, and can you run 6th edition or d20?

Most of our Game Masters run 7th Edition because it is clear, flexible, and supported by current scenarios. If you prefer 6th Edition or the d20 version, please mention it in your request. Several GMs can run older editions or convert classic modules to maintain the original feel. You can browse available Game Masters and check which editions they list on their profiles here: find a Game Master.

How deadly is it, and how does Sanity function?

Call of Cthulhu is inherently dangerous. Combat is quick and can be deadly, and the Sanity system monitors how exposure to the unnatural impacts your mind. Losing Sanity alters how your investigator manages stress and can result in either temporary or permanent conditions. It’s not a bloodbath unless you request it. Your GM adjusts the level of danger, provides options for retreat, and assists you in introducing a new character if necessary, ensuring that tension remains high without compromising the enjoyment.

What sets Call of Cthulhu apart from D&D?

In D&D you often solve problems through combat, gaining levels, and collecting gear. In Call of Cthulhu, you investigate, interview, research, and avoid direct confrontations when possible. Skills are represented as percentages rather than classes, and improvement is gradual. Magic is uncommon, risky, and often comes at the cost of Sanity. Many scenarios conclude without a boss fight. Success might mean stopping a ritual, saving a bystander, or simply making it out alive. The tone leans more towards realism and dread than heroic fantasy.

What group size and session length are most effective?

It works well with 3 to 5 players. With two, the game has a tight, careful feel. Six is manageable if everyone takes clear roles like face, researcher, and scout. A one-shot typically lasts 3 to 4 hours, which is enough for a complete mystery with a conclusive ending. Campaign sessions are of a similar length, featuring threads that carry over between episodes. Our Game Masters adjust clue density, difficulty, and time pressure to ensure the story fits your time slot and level of engagement.

Is it suitable for teens, and how frightening can you make it?

Content may include violence, distress, and occult themes, so it is not suitable for children. Mature teens can participate if the group agrees and a guardian approves. Before the game, your GM will check comfort levels and establish lines and veils. We can focus on suspense rather than gore, or maintain a pulpier style with fewer grim outcomes. To align the intensity and tone with your preferences, browse GM playstyles and mention your preferences when booking.

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Genres you can play in Call of Cthulhu

What players think

  • Ruby was fantastic; this was our group’s first DnD experience, and she helped everyone grasp the rules and enjoy themselves.

    Adam

  • We had a fantastic time; the boys really enjoyed their campaign, and Evan was excellent. I would definitely recommend Evan. Thank you!

    Cheidhia

  • Geert was a lot of fun and very enthusiastic! We were in stitches laughing :D

    Wessel

  • It was an amazing experience for the girls! Thank you, Marie! You were incredibly well prepared, the girls were captivated by your every word, and it felt like you had been playing together for years! Looking forward to seeing you next time!

    Annick

  • Tom was fantastic! He was really great with the kids and patient with his explanations. It was a wonderful evening and definitely worth doing again! The children asked the next day when we would be doing this again.

    Danny

  • First of all, I want to say that Sebastian was really great as a DM. For his first run as a booked DM, he did a fantastic job. The 3 stars refer to the following: 1. We were disappointed that the adventure was labelled a One Shot yet wasn't a complete story. Discovering that there are two more parts wasn't very positive for us, as it meant there was no satisfying conclusion to the story. 2. As new players, it was difficult for us to understand the English character sheets in such a short time. In German, it would have been much easier. Even receiving the character sheets a few days in advance would have been helpful for preparation. 3. More guidance would be beneficial. Especially for beginners, a more linear one shot would have been preferable. We wasted a large portion of the adventure time doing unnecessary things because we didn't really know how the game worked. Overall, I think the StoryForgers concept is really good and I see a lot of potential in it, especially for introducing new players to D&D. I hope you don't take my feedback the wrong way but see it as honest criticism. Cheers, Mario

    Mario

  • Bryan was exceptional. We had a group with varying levels of experience, and he managed to keep everyone engaged and involved. His positive attitude made the game enjoyable for all. I really appreciated how he could clearly explain what was needed from our less experienced players while also keeping our more seasoned players on their toes with his extensive knowledge of the game. Everyone in our party had a fantastic time thanks to Bryan.

    Jeremy

  • Dayron was fantastic. Well-prepared, punctual, and had a brilliant sense of humour.

    Corey

  • Dayron was fantastic; he provided an excellent experience. Thanks!

    Casey

    The Merry Meeple

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