Spawn uses Fable-powered agents to autonomously develop multiplayer game world, spending over $3 million in tokens per month

Spawn is a massively multiplayer online game where players modify the world through prompts to an in-game AI agent named Savi. The platform is now being developed autonomously by a swarm of Fable-powered agents that change live code and ship updates hourly. About 60% of work originates from production errors, bug reports, or feature requests, with Savi filing bugs automatically. The system achieves continuous deployment with rollback times of 30 seconds, and intentionally breaks production to test recovery paths.