---
format: "aidr-story-markdown/v1"
id: "a41c6b1e5e903c631014638bfe27543e223a1d7bebe3f05e5649bf66747bb7ea"
canonical_url: "https://aidr.today/a41c6b1e?lang=en"
title: "Building a multiplayer game world with autonomous Fable-class models"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-29T17:00:26.000Z"
category: "Agents"
topics: ["agent"]
source_urls: ["https://simonwillison.net/2026/Oct/29/how-i-built-the-most-ai-pilled-company-in-the-world/"]
summary: "Spawn is a massively multiplayer gaming environment where players use prompts to modify the game world, and it is being developed autonomously by a swarm of Fable-powered agents that cost over $3 million in tokens per month."
---

# Building a multiplayer game world with autonomous Fable\-class models

> [Open the canonical story](<https://aidr.today/a41c6b1e?lang=en>)

**Published:** 2026-10-29T17:00:26.000Z
**Category:** Agents
**Topics:** agent

## Summary

Spawn is a massively multiplayer gaming environment where players use prompts to modify the game world, and it is being developed autonomously by a swarm of Fable\-powered agents that cost over $3 million in tokens per month\.

## Sources

- [Story source](<https://simonwillison.net/2026/Oct/29/how-i-built-the-most-ai-pilled-company-in-the-world/>)