devwithjev
— reading now— views
Submit a build

Entropy City Simulates Urban Breakdown

Farynth built Entropy City while experimenting with Jev, prompted by the idea of using a fast AI to coordinate a response to a city falling apart. The city starts without AI management as supplies run down, infrastructure wears out, fires spread, storms roll through, and broken systems pressure connected ones.

Farynth@farynth𝕏
I’ve been experimenting with @typesafeai 's jev, and one idea really caught my attention: could a fast AI coordinate the response to a city gradually falling apart? So I built Entropy City. Entropy City starts with no AI management. Supplies run down. Infrastructure wears out. Fires spread, storms roll through, and broken systems start putting pressure on everything connected to them. Then I give
Sep 17, 2026X postsView on X

Also filed under Games & real time

  • Slay the Spire 2 Run Agent

    The agent uses TypeSafe Jev to pick each move and a Claude Code session to plan the run as strategist.

  • Jev-Powered CEO Rock Paper Scissors

    Ben built a tournament in which S&P 500 CEOs played rock paper scissors, with Jev picking every throw. The tournament took under 10 seconds and cost half a cent.

  • Self-Hosted Jev-Compatible Server

    Decis is a self-hosted Jev-compatible server for Laya and Kev engines. It provides Docker images, official-SDK compatibility, and runnable decision games.

  • Jev Plays Pokémon Red

    A Pokémon Red harness lets Jev choose every menu, navigation, team, and battle action from legal options exposed by the emulator.