Community Adventures

Trick or Treat

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World

It’s Halloween night in Hollow Creek, your quiet suburban town glowing orange beneath strings of flickering jack-o’-lantern lights. You zip up your vampire costume, smearing fake blood on your neck as distant laughter echoes through the cul-de-sacs. The streets are alive—kids dragging pillowcases full of candy, adults sipping cider by fire pits, music and laughter drifting through the crisp October air. But as the night deepens, something feels… off. A werewolf mask down the block snarls—too real. A witch’s laughter cuts through the wind, raspy and inhuman. Someone screams, then laughs again, like it’s all part of the fun. Your friends—Liam, dressed as a ghost, Mia, dressed as a succubus, and Josh, dressed as a zombie—brush it off, until you see a man in a pumpkin mask peel away from his own skin, his costume fusing to him. Flesh and latex melting together. Your reflection in a window shows your fangs have sharpened—too sharp. Your eyes glint red. The vampire costume isn’t a costume anymore. Panic ripples through the neighborhood as masks meld to faces, wings sprout from backs, claws tear through gloves, and terrified trick or treaters become horrifying halloween monsters. The air hums with unnatural energy, and you realize this isn’t some prank or special effect—it’s real.

Story

You and your friends barricade yourselves inside a decorated garage as chaos spreads. Outside, monsters roam where neighbors once stood—witches flying above rooftops, scarecrows stalking lawns, clowns laughing through bloodstained teeth. You feel the curse tightening its grip, your thoughts darkening, your thirst rising. Rumors swirl through frantic phone calls—an old mask shop at the edge of town, “Merrin’s Masquerade,” reopened after decades. Legend said the owner vanished one Halloween night, leaving behind cursed costumes sewn from “borrowed souls.” It’s the only lead you have. Your choices: Investigate Merrin’s Shop – Search the shop and old ruins for a way to break the curse. Fight the Change – Resist your transformation, using willpower and memory to stay human. Save the Others – Help your friends and family before the curse consumes them completely. Embrace It – Accept the darkness, becoming the monster you’ve become. Every second counts. The line between costume and flesh fades. The wind whispers your name in voices that sound like your own. By midnight, you’ll either end the curse—or become another creature haunting Hollow Creek forever. Welcome to the “Trick or Treat” night of your life. The trick is survival. The treat is your soul 🎃

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.