
Dreadful Things Solo AI #1: The Rats in the Walls
On Quisicosas since 14 April 2026
Featured in the newsletter of
14 April 2026 (on Substack)
What it is about
A Lovecraftian Horror You Don’t Just Read… You Survive
Dreadful Things Solo AI #1: The Rats in the Walls
Inspired by the classic tale by H.P. Lovecraft, The Rats in the Walls drops you into a slow-burning investigation that descends into one of the most disturbing revelations in cosmic horror.
Just Copy, Paste, Play
This is a Solo AI Adventure.
Just copy and paste the prompt into your favorite LLM (Claude, ChatGPT, Gemini) and play. No prep or GM required.
Made by Humans for AI Adventure: While the experience is run by AI, the story has been carefully designed by humans to deliver a horror mystery that brings the tale to life.
The Terror Beneath
Lord Arthur de la Poer has restored his ancestral estate despite warnings. Now he hears rats in the walls. Thousands of them.
Workers are disappearing, Arthur’s sanity is fraying, and somewhere deep beneath the priory an ancient evil is beginning to stir. Only you can stop it.
What’s Inside?
A complete solo mystery adventure prompt featuring investigation, madness, and battle
Branching discovery paths and multiple endings that ensure no two sessions are the same
Playable as a stand-alone adventure or as part of the Dreadful Things campaign
Can be played with a FREE Claude account. Just copy into the prompt window and run.
Who This Is For
Players who want a true solo RPG experience
Fans of Lovecraftian and cosmic horror
Anyone frustrated with “AI RPGs” that fall apart after 10 seconds
Part of the Dreadful Things Solo AI Series: New standalone horror adventures released monthly.
Buy Now.
