Generate a complex 3D simulation of a town's evolution
Build a procedurally generated 3D simulation of a harbor town's evolution from 3000 BCE to 3000 AD.
build me a procedurally generated 3D simulation showing the evolution of a harbor town from 3000 BCE to 3000 AD, it should look beautiful and allow me to have some control over it.
This prompt was used with GPT-5.5 Pro.
A 3D simulation of a harbor town evolving over 6000 years.
This prompt instructs an AI to create a detailed, visually appealing, and interactive 3D simulation of a harbor town's development over a 6000-year period. It's designed for advanced AI models capable of complex generation and simulation.
The prompt is specific about the subject (harbor town), the timeframe (3000 BCE to 3000 AD), the desired output (procedurally generated 3D simulation), and key features (beautiful appearance, user control). This level of detail guides the AI to produce a relevant and sophisticated result.
- Sign of the future: GPT-5.5 ↗One Useful Thing (Ethan Mollick) · One Useful Thing (Ethan Mollick) · Apr 23, 2026 · quoted as shared
First seen on Subvolts Apr 23, 2026. Updated Sep 11, 2026. Spotted a problem? Tell us.
- Sign of the future: GPT-5.5OpenAI · One Useful Thing (Ethan Mollick) · Apr 23, 2026
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Questions people ask
- Which AI tools does this work with?
- The sources used it with ChatGPT, Codex.
- Where did this come from?
- One Useful Thing (Ethan Mollick) (One Useful Thing (Ethan Mollick)). Subvolts collected, normalized and credited it; the link above opens the original.

