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Cyclopean Foundations Campaign

He talked of his dreams in a strangely poetic fashion; making me see with terrible vividness the damp Cyclopean city of slimy green stone—whose geometry, he oddly said, was all wrong—and hear with frightened expectancy the ceaseless, half-mental calling from underground: “Cthulhu fhtagn”, “Cthulhu fhtagn”.

— H.P. Lovecraft, The Call of Cthulhu

Cyclopean Foundations is an original 8-part campaign for Arkham Horror: The Card Game drawing from The Call of Cthulhu by H.P. Lovecraft, the Eldritch Horror board game, and more.

The Mysterious Letter

You had read in the papers of a series of archaeological expeditions funded by a man named James Wycliffe, all of which had been resounding successes. This morning, however, you find a letter on your doorstep address from Wycliffe. Barely half a day after its arrival in America, one of the expedition shipments of stone artifacts has gone missing. The financier asks for your help with a generous cash advance, but gives you little information. Questions abound, but it’s up to you to find the answers!

Twisting Space

As you uncover the secrets behind the missing artifacts, you are faced with forces that strain your comprehension. Cyclopean Foundations adds a new effect which will become more common as you uncover the secrets of the strange stone: Non-Euclidean. This otherworldly stone twists the world around it, which can lead to some unpredictable effects for those trying to navigate them. Non-Euclidean effects trigger when investigators would move from locations with those effects on them. There’s no guarantee that you’ll even be able to leave the way you entered! Keep your wits about you, for this unnatural geometry is the key to everything.

A Secretive and Intelligent Foe

Dark and cunning forces levy against you in your quest for truth, and they will be gauging you carefully. They know who you are — even your class! — and may even take direct counter-measures if you prove a great enough threat to their plans. The greater your success, the more likely you are to attract the Notice of your enemies and the more precautions they will take to prevent your meddling in their schemes.

Combat these insidious enemies, uncover the truth about the impossible stone, and prevent this evil scheme from coming to fruition!

The eight scenarios in Cyclopean Foundations are:

  • Scenario 1: Lost Moorings
  • Scenario 2: Going Twice
  • Scenario 3: Private Lives
  • Scenario 4: Crumbling Masonry
  • Scenario 5: Across Dreadful Waters
  • Scenario 6: Blood From Stones
  • Scenario 7: Pyroclastic Flow
  • Scenario 8: Tomb of Dead Dreams
How to Play:

Special thank you to the Mythos Busters and SCE communities for the support and feedback for the campaign.


41 thoughts on “Cyclopean Foundations Campaign

    1. I’m calling it finished as of the last update. There are probably adjustments that can be made for quality of life, but I’m not planning on any changes as they currently sit.

      Liked by 1 person

      1. I already made one. You can find it in the usual place on BGG. You are not going to be disappointed. This is right up there in the top three campaigns of all time and I can absolutely see how some may view it as their favourite.

        And if the legendary beard decides to create pnp files for any of his other projects have not yet been released, I promise you I will get on making mpc projects immediately.

        Liked by 1 person

    1. The one in the mod has not been updated since the mod was way earlier in the year. If you’re playing on TTS, use the workshop version in the link instead.


  1. Fantastic campaign! But I think there may be an error in the pnp files. For the final scenario, all four versions of “impossible reach” say “(up)”


      1. My oops then. I was the one making the mpc link available through the bgg site and I guess the filenames messed up the auto generate or something. I shall fix it for anybody printing through my shady link instead then :-P.

        Anyways thanks a ton for a fantastic job and I cannot wait for more of your stuff to reach the P&P stage

        Liked by 1 person

          1. sorry for the late reply. This site doesn’t like hotlinks aparrently so just copy this into your search engine: ”
            Professionally printed cards (FFG & custom made content)”


  2. Finished the campaign today and my God does it get REALLY GOOD. Scenarios 4 to 7 have become some of my favorite scenarios ever, such a mechanic achievement.

    The departure from the first 3 scenarios is massive, they barely seem connected about the globetroting-extravaganza from later on. Completely captured the feel of starting a RPG campaign, from humble begginings to world-ending scenarios across the world.

    Congrats! This campaign was awesome and shows much progression on your end since the days of Alice!


  3. My goodness, this is such a fantastic campaign! Thank you for writing and designing it – the mood, globetrotting, all that good stuff reminds me in the best way of my OG Call of Cthulhu days.

    Only trap for me is the final scenario – love the idea, but I just don’t get it 🙂 I’m playing true solo which is bound to be difficult in a blind run, but the cards that come out after Agenda 2 hits (pillars? I forget the name) – do we shuffle them back in their deck of 4 and draw a new one each turn, so only one is in play at a time, or do we just keep adding them underneath the Agenda deck, which would likely make true solo impossible in most circumstances? There are a bunch of other Qs on the final scenario around moving (can we move to same-oriented locations, or just to locations which are listed on the location itself, etc. – and with all the monsters being able to move anywhere it’s a bit tough), and probably some I’m forgetting.
    Finally the Art-Auction scenario: again it was true solo, but only 1 of the 4 pieces ever came up for auction. I bought it but had to take a loan so lost it anyway 🙂 was there supposed to be a chance for more pieces to become available?

    Again, kudos for a fantastic campaign. One of the best non-FFG ones I’ve seen!

    Liked by 1 person

    1. Thanks for playing, and I’m glad you enjoyed it! I may have to add some extra instructions to TTS to clarify these questions.


  4. Any news when final version come out? I would like to translate it into Polish.
    I am afraid to start now because of possible changes.
    btw Tyler Great job, all your scenarios are masterpiece. I’ve just finished translation of The War of the Worlds.


    1. I’m still waiting for feedback on the final three scenarios, but it should be finished fairly soon. Check the Coming Soon page for progress updates, and thank you for the compliments!


      1. Great news, so first 5 scenarios are ok to translate? no time to lose, let’s get it started.
        by the way how is going with Jumanji ?


        1. Jumanji is fully finished, but still undergoing initial testing before I release it publicly. It should hopefully be very soon.


  5. Hi! Forgive me if it’s a silly question. I see the PAP files are all PNGs. Is there any software I can use to group as many as they can fit in a single A4-sized page to print as many cards as possible on a single page?


    1. I’m afraid I don’t know much about the printing aspect, I’m sure there is software that can do it but I don’t know it.


    2. I used IrfanView -> Thumbnails -> “Create contact sheet from selected thumbs” to create 4*2 cards on Letter paper. This worked pretty well for me.


  6. Hello. In scenario 7 – Pyroclastic Flow is referenced a location – “Impossible Summit”. It seems to be missing in the print and play files. I couldn’t find it.

    Otherwise great campaign! We enjoyed it very, very much 🙂


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