Community Adventures

Nightmares at Grimhallow

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World

Welcome to Grimhallow – Where Nightmares Work Overtime* Fear isn’t just a feeling — it’s fuel. And in Grimhallow, it powers everything. This city of endless night is run by monsters in cubicles, eldritch middle managers, and soul-sucking HR reps. You’re a fresh recruit at the Department of Fear, the interdimensional agency that extracts terror from mortal dreams to keep the universe stitched together. Office politics here include backstabbing literally and the coffee machine eats interns. But something’s wrong. A dream has gone rogue. Memories are glitching. And there’s a file with your name on it… in the Redacted Zone. Clock in, monster. Terror needs harvesting. And if you survive your first shift, maybe just maybe you’ll uncover what’s really lurking beneath the cubicle abyss. Benefits include dental, limited immortality, and optional madness.

Story

In this dark fantasy world of monster inc where cubicle mazes, soul-devouring memos, and shifting reality zones, you play a newly initiated agent in a system where fear is currency, bureaucracy is sacred, and nothing is ever what it seems. As a fresh recruit, your job is to hunt rogue nightmares, harvest scream-energy, and file the proper forms before your shift ends (or your sanity does). But when a seemingly routine dream mission goes sideways, you uncover a file that shouldn’t exist — one tied to a long-erased department, a rogue dream called Vex, and a version of you that remembers something the system desperately wants forgotten. Now, you're caught between a monstrous corporate machine and the unraveling of reality itself. You'll navigate dream-warped districts, uncover buried truths, and dodge the watchful eyes of the Grey Clerks, ancient auditors who erase anything that questions protocol — including people. Alongside allies like your anxiety-ridden supervisor Mr. Klember and the chaos-driven Vex, you’ll uncover a conspiracy that stretches from the depths of the Redacted Zone to the slumbering god beneath the city. The deeper you dig, the more you’ll realize: fear isn’t just fuel — it’s a weapon. In this surreal and satirical campaign of cosmic horror, absurd office culture, and dream logic gone wrong, your choices shape more than just your monster’s fate. Will you free the dreaming world from its chains? Or climb the corporate ladder, one scream at a time?

With AI Game Master installed, launch this adventure by clicking here. If AI Game Master is not installed, you will be taken to the app store to download it.

Disclaimer: The monsters contained within this compendium are the result of generative AI processes, created without specific intent or design towards any existing intellectual property. Any resemblance to characters, creatures, or entities from Dungeons & Dragons (D&D), Pathfinder, Warhammer, and other RPGs (such as Star Wars RPG, Cyberpunk 2020, Shadowrun, Call of Cthulhu, World of Darkness), tabletop games, video games, literature, or any other media is entirely coincidental and unintended. This compendium is not affiliated with, endorsed, sponsored, or specifically approved by any company or publisher. Our aim is to explore the creative possibilities of AI and to provide unique and imaginative monsters for entertainment and inspiration.