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The Cthulhu Hack
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The Cthulhu Hack

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The Cthulhu Hack is a standalone game of investigation horror, pitting ordinary people against the sanity-shattering horrors of Lovecraftian gods and monsters. With an elegant dice mechanic and fast, player-focussed gameplay, The Cthulhu Hack is designed for quick and easy pick-up play. Updated with optional rules playtested over the year since the release of the first edition, it contains twice the originals content but remains more compact than a single chapter in many big book games of investigation horror!

Based on the hugely popular The Black Hack and the works of H P Lovecraft, The Cthulhu Hack uses a simple dice mechanic to emulate the dwindling investigative resources  and sanity available to those intrepid sorts willing to put their lives and reputations on the line in pursuit of the Unmentionable and Unthinkable.

The 44-page core book offers:

  • simple mechanics to handle threats and investigation
  • read-to-play archetypes for quick pick-up play or a fast and flexible character creation system to tailor Investigators to your specific needs
  • a range of mechanics, both standard and optional, to tailor the game to your style - including Wealth, Fortune, Adrenalin and Shock
  • Mythos horrors - including Mi-Go, Deep Ones, Shoggoth and more - to challenge your Investigators
  • a complete adventure - Save Innsmouth - and a 2-page example of play

Check out an example of adventure conversion of The Haunting on the Just Crunch Games website, the rough-and-ready conversion guide for Call or Trail, or give the game a test run with the Quickstart Nocturnal Rites.

Join the Google+ The Cthulhu Hack Community group to field questions, post your session reports, and provide feedback on this and other releases.

Reviews from Other Sites

Paul Maclean - "The Cthulhu Hack… at The Breakfast Club we love it!" (Cthulhu Breakfast Club /, at AireCon 4)

Steven Robert - "If you want at least a little bit of butt-kicking, or if you like tossing dice, The Cthulhu Hack is the clear choice." (RPGGeek)

Eric Dodd - "I welcome the appearance of The Cthulhu Hack to the crowded Lovecraftian RPG mantlepiece. If you liked the simplicity of Cthulhu Dark but felt you needed a few more tools and levers to build a game around, without having to track 40 or 50 skills or detailed weapon statistics, then The Cthulhu Hack might be just what you’re looking for." (RPGGeek)

Mike Hill - "The bottom line is that I will actually play this game. I download a lot of projects that never make it off the hard drive." (The World According to CARP)

Simon Burley - "The Cthulhu Hack hit my doorstep today and it's bloody good!" (author of superheroes classic Golden Heroes)


  • Created with The Black Hack: This is a standalone product, including the Open Game License material of The Black Hack.
  • The core rule book file is digest-sized, scaled to A5. Save Innsmouth was previously available as a standalone product.
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Reviews (3)
Discussions (2)
Customer avatar
Nathan C February 20, 2018 5:45 am UTC
Sorry to bother you, is the POD version coming back anytime soon or am I just missing it?
Customer avatar
Paul B February 20, 2018 6:44 am UTC
No bother at all! I haven't overcome the hurdles of making a POD version available here, because the process keeps running into errors that I'm having trouble resolving through the pre-print stage. However, you can get a fine print edition from All Rolled Up's web store (with matt cover and off-white pages) or Lulu (with gloss cover and white pages). The moment I can get the issues resolved, there'll be POD here, too.
Customer avatar
Jeff W November 25, 2017 3:48 pm UTC
Seems the new HD as Resource (HDR) document isn't quite complete. One of the usage examples is truncated that starts with "A robust investigator" ... ends with "reducing the attack to 9 damage, which means the player" ... which means the player what ? Figure it would have been nice to also have the details on healing when running HDR. I get that the character can heal 1HD daily by themself ... which would be a step up ... but what if they receive external healing, one step up ( limited at HD max ) per HD of the heal ? I'm looking at using HDR generally, I love that this removes yet another distinct mechanic from the game and makes things just that much more consistent.
Customer avatar
Paul B November 25, 2017 5:26 pm UTC
Thanks for the catch - I have amended the section boundary to show the bit that was missing and added a bit of an experimental note about healing, which I leave to individual groups to tweak to taste.
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File Last Updated:
November 25, 2017
This title was added to our catalog on May 10, 2016.
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Just Crunch Games
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