Level up your investigations with Chaosium Core

At the heart of Chaosium Core lies Elder, the eldritch AI assistant, ever-ready to guide you through the intricate rules and rich lore of Call of Cthulhu. You can chat just about everything from the five core rulebooks, including investigator creation, spells and monsters.

Then $5/month (beta pricing)

Elder

Your personal Call of Cthulhu AI assistant

Unravel the mysteries of the cosmos with the all-knowing Call of Cthulhu chatbot. Receive expert guidance and enhance your gameplay with Elder.

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What is the penalty for failing a sanity roll?

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When an investigator fails a Sanity roll, they lose Sanity points. The amount of Sanity points lost depends on the situation encountered. In published scenarios, the amount of Sanity points lost is shown as two numbers separated by a slash. The number to the left of the slash is the amount of Sanity points lost if the Sanity roll succeeds, and the number to the right of the slash is the amount of Sanity points lost if the Sanity roll fails.

Get instant answers

Elder can assist with answering rules or lore related questions, such as combat mechanics, skill checks, and character creation.

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What are the Elder Signs and how are they used?

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Elder Signs are symbols that protect against the influence of Mythos entities. They are created or activated with a spell and can take many forms. An active Elder Sign near an opening or a Gate blocks access for minions of the Great Old Ones, but only if the entity cannot evade the Sign. They are often used to warn of danger and as a plot device in scenarios.

Explore the mythos

Elder has extensive knowledge of the Call of Cthulhu universe, including the mythos, deities, spells and historical events.

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What are the incredients of The Bee's Knees?

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The Bee's Knees is a classic cocktail from the 1920s that is made with gin, lemon juice, and honey syrup. Ingredients: 2 oz gin, 3/4 oz fresh lemon juice, 3/4 oz honey syrup (made by combining equal parts honey and hot water).

Be more creative

Elder can help you come up with creative ideas on the spot or when you are planning your scenarios.

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What is included in the subscription?

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You will get access to the 5 core rulebooks of Call of Cthulhu 7th edition including the Keeper Rulebook and the Investigator's Handbook. Additionally, Elder is able to answer any question you have from those rulebooks. Get answers on spells, monsters, rules and lore in a matter of seconds. Elder is your GM buddy, always ready to help you level up your game.

$200 value for $5/month

Get access to 5 of the core Call of Cthulhu rule books, a total value over $200 for only $5/month (beta pricing).

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Elder's knowledge

Investigator Handbook
Investigator Handbook
Receive invaluable advice on character creation, skills, and more from Elder's vast knowledge.
Keeper Rulebook
Keeper Rulebook
Elder's comprehensive understanding ensures captivating campaigns and immersive gameplay.
The Grand Grimoire
The Grand Grimoire
Unlock arcane spells, rituals, and artifacts with Elder's expertise on the Grand Grimoire.
Malleus Monstrorum I
Malleus Monstrorum I
Uncover Lovecraftian creatures' secrets with Elder's extensive knowledge of their origins and abilities.
Malleus Monstrorum II
Malleus Monstrorum II
Survive the most terrifying creatures of the Mythos and uncover the truth about their deadly attacks.
More rulebooks and lore
More rulebooks and lore
Benefit from Elder's encyclopedic knowledge, enriching your roleplaying experience like never before.

Coming soon

Start asking Elder

Elder can help clarify rules and be the impartial judge needed to make a ruling on the fly. With Elder you can focus on the game, not the rules.

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Constant improvements

Stay ahead of the cultists with regular updates to the capabilities of Elder.

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Coming soon

Browse the Call of Cthulhu library

Gain access to the Call of Cthulhu library, featuring Chaosium’s official rulebooks for Call of Cthulhu 7th edition. Immerse yourself in Lovecraftian lore and explore the darkest corners of the mythos at your leisure.

What people are saying about Quest Portal

Gabrielle de Bourg

I can be quite critical of AI, but this is the exact type of tool that AI is great for (at least in TTRPGs), as it allows us to focus on the creativity of playing. I can usually keep track with a rulebook PDF, but this really does ease up flow of the game.

The Nameless Nerd

Learning to use a VTT can be very daunting, but Quest Portal is the most user-friendly and accessible one that I have ever tried. I expected there to be a decent learning curve to figure out how it worked, but everything was simple and clear.

Frequently Asked Questions

Join the adventure

Quickly create a campaign, invite you friends and start playing right away with hundreds of scenes, maps and sounds at your fingertips.

Produced under license from Chaosium Inc. (chaosium.com) Call of Cthulhu, Chaosium Inc., and the Chaosium logo are registered trademarks of Chaosium Inc. Chaosium Arcane Symbol (the Star Elder Sign) © 1983 Chaosium Inc. All rights reserved.