ONE PROMPT. A CITIES: SKYLINES II–CLASS CITY BUILDER. 🤯🏙️

Claude Opus 5.5 was given one mission: build an AAA-quality city simulator from an empty folder using Three.js + Vite.

The prompt demands:

🏗️ Modular architecture with 13+ independent systems
🌍 Photorealistic PBR materials, realistic lighting, shadows & atmosphere
🚦 Roads, zoning, buildings, traffic & simulation
🌃 A living city that looks believable at night
🤖 Multi-agent orchestration to build systems in parallel
📸 Automated screenshots, performance logs & visual testing
🎯 Independent AI critics scoring every module against Cities: Skylines II
🔁 Up to 4 improvement rounds per module until it reaches an 8.5/10 quality bar

Even the AI isn't allowed to claim success without screenshots and verification.

The ultimate rule? NO PROGRAMMER ART. NO INFLATED SCORES. KEEP ITERATING.

This isn't just asking AI to write code. It's giving AI an entire game-development pipeline.

Can one developer + AI really build a AAA-level city simulator? 👀