Cosmic horror template: build it step by step
One location, one wrong detail, a reason to look twice. Do not explain the detail in a note that solves it. The AI horror game maker is the broader scare.
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The sentence you type
"Make a cosmic horror. Start with one location with one sign that the world is wrong."
The brief the AI writes back
First playable: one location with one sign that the world is wrong. The loop to get right: investigate, learn too much, lose your grip.
Build, play, adjust
Compare with the games that define the genre: Bloodborne (FromSoftware, 2015), Call of Cthulhu: Dark Corners of the Earth (Headfirst Productions, 2005) and Dredge (Black Salt Games, 2023).
What makes it finished
The player can leave the place knowing less comfort than they entered with, and can still say what they saw.
Related templates
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Describe your version in one sentence. The AI writes a brief from the template, and nothing is built until you approve it. Free for Windows and Mac.