Tiny living city simulation with pedestrians, cars, shops, rain, and day-night cycle
I asked Claude Opus 5.5 to simulate a tiny living city from scratch with one prompt 44 people walking around, cars driving through the streets, shops, buildings, NPCs entering places, rain, umbrellas, and a full day from sunset to night cycle > It took around an hour > Cost me about $10 Pretty insane what one prompt can turn into now
— Penguin (@PenguinWeb3) Sep 26, 2026
What they asked for
A summary of how the author describes the request. It is not their exact prompt.
Simulate a tiny living city from scratch with one prompt.
Described by @PenguinWeb3 in the post
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- Games
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- Physics
- From the author
- took around an hour; cost about $10
- On X
- 43 likes · 1.2K views · 6 saves
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