Tonight, I am running the second session of a one-GM-one-player game of Cthulhu Dark by Graham Walmsley. This is the fourth time I’ve run the game on the channel. I ran The Screams of Children from the core book, Fairyland by Scott Dorward, and Of Fathers, an adaptation of a duet scenario for Call of Cthulhu. You can watch those three, plus my current scenario (The Answer), here.
The more I run duet games with one player, the more in love I am. They are intense, intimate, and engaging. If you’ve never tried it, I recommend you do.
If you’ve never run Cthulhu Dark, here’s the pitch: it’s a Lovecraftian horror game so stripped down that your character sheet is basically a name, a job, and one number. Graham Walmsley built it to get out of the way; no combat stats, no skill lists, no inventory tracking. Just you, your profession, and how much of your mind you’re willing to gamble to get what you want.
The core loop is simple. When you act, you roll dice: one if you’re doing something any human could do, two if it’s something your profession makes you good at, and (this is the fun part) a third if you’re willing to risk your Insight, your only stat, by pushing into the horror instead of looking away. You take the highest die. A 4 or better, and you get what you’re after. Anything lower still moves the story forward, just at a cost. If your highest die is a 6, you will get far more than you were trying for and will likely regret it. The key is you always get something; there is no binary fail.
The Insight die is where the game lives. Every time you risk it, your Insight may tick up. It’s less a resource you manage than a fuse you’re lighting because the only way to understand what’s really happening in a Cthulhu Dark scenario is to look straight at the thing that will unmake you. It is not a monster-hunter game. If you try and fight a monster instead of running from it, and you’re not rolling, you’re just dead. There’s no mechanical bargain there. The game isn’t interested in letting you think you can physically take on the supernatural.
When Insight hits six, you’re done. Not “down a few hit points” done — done. Your character either breaks completely or comes out on the other side seeing more of the universe than a human mind was built to hold. Neither is really a good outcome. That’s the point. Your character is lost.
Which is also where I’ll add a caveat, because I don’t think Cthulhu Dark is the right tool for every horror story. If you want survival horror with real tactical stakes, a horror campaign your characters can meaningfully grow across sessions, or investigators who might actually walk away clean, look elsewhere — the system isn’t built for it, and forcing it will feel thin. Where Cthulhu Dark absolutely sings is the scenario where the ending was never really in doubt: your characters are doomed the moment they start pulling the thread, and the only open question is which doom they get. Do they come out the other side irrevocably changed, or expanded — touched by something too big for a human mind to hold, in a way they’ll never fully explain to anyone who wasn’t there? That’s the story Cthulhu Dark is built to tell, and it tells it better than almost anything else on my shelf.
