Building a Multiplayer Game World With Autonomous Fable-Class Models
Building a multiplayer game world with autonomous Fable-class models
- Who
- Simon Willison
- What
- describes Spawn’s autonomous development workflow using Fable-powered agents
- Quote
This is continuous deployment turned up to 11: A loop this tight only works if it never stops, so we treat an hour without a ship as a SEV-0, our most severe kind of incident.
What happened
Simon Willison examines Jacob Sansbury’s account of developing Spawn with autonomous Fable-powered agents reportedly costing over $3 million in tokens per month. Willison tried the multiplayer game on his phone, prompting its in-game agent, Savi, to create a castle and a dragon he could ride. Sansbury describes hourly production deployments, automated bug triage, and targeted rollbacks in 30 seconds; Willison sees games as a promising setting for exploring coding agents while questioning this approach’s suitability for higher-stakes software.
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See the full storySimon Willison Examines Spawn’s Autonomous Agent Development WorkflowThe story so far
Simon Willison examined Jacob Sansbury’s account of building the multiplayer game Spawn with autonomous Fable-powered agents, describing a workflow that Sansbury says deploys to production hourly and supports targeted rollbacks in 30 seconds. The agents reportedly consume more than $3 million in tokens per month. Sansbury described automated bug triage and said the team treats an hour without a deployment as a SEV-0, its most severe incident category. Willison tried Spawn on his phone, asking its in-game agent, Savi, to create a castle and a dragon he could ride. He sees games as a promising setting for exploring coding agents, while questioning whether this development approach is suitable for higher-stakes software.
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