I built this in one day using 4 Claude Code sessions (~7,600 lines total, 4,300 in a single HTML file). No React, just one canvas + Web Workers. Cloudflare Workers + D1 backend.

What it is: 300 dwarfs on a 2000x1000 tile globe across 125 cities. Each dwarf has D&D-style stats (STR/DEX/CON/INT/WIS/CHA), mental state metrics (faith, morale, ambition), an AI-generated backstory, and a craft inventory. They eat, sleep, trade, and sail ships autonomously. Starvation is real: no food for 30 days = death.

The AI architecture I'm most curious to get feedback on: - 4-level model routing: Gemini Flash Lite -> DeepSeek -> Claude -> GPT-4o - Fire-and-forget: the simulation never blocks on AI. Requests are sent async, results cached, dwarfs pull from cache when idle - $8.50/hr hard budget cap via OpenRouter - Craft system: 296 base recipes + Gemini-generated unknowns (Water + Fire = Steam, etc.)

By default every dwarf runs on Gemini Flash Lite. If you send $1-10, your sponsored dwarf exits auto-sleep and gets Claude Opus instead. That was the monetisation idea -- sorta validated it – got $3. "It's not much but it's honest work".

Click any dwarf on the map and read their bio (you can Pause to make the busy fellas stop running). Curious what breaks for people.