Vibe Coding NYC Adversarial Policy Simulator with Claude Opus 5

ZeroStateReflex · x · 2026-08-02

A developer shared their 'vibe coding' project built with Claude Opus 5: an adversarial policy simulator for New York City called Upzoned.

Unlike classic city-builders like SimCity where the player has god-like power, this game introduces NPCs acting as rivals (such as NIMBYs and special interests). Players must fight through the ULURP process against these opponents to upzone the city.

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