Spawn builds a multiplayer game world with a swarm of autonomous agents
What happened
On 30 October 2026, Simon Willison reported on an experiment by Jacob Sansbury's team to build a multiplayer game environment, Spawn, using autonomous agents. According to the report, players can prompt the in-game agent Savi to modify the game world; Willison said he successfully generated a castle and a dragon on his phone and flew on the dragon. The report does not mention when the project started, the size of the team or any follow-up plans, and the public information so far is limited to a demonstrative description of this development experiment.
Written by AI from the reports · updated 1 h ago
Timeline
Follow the reports to see the event from each side.
- Simon WillisonBuilding a multiplayer game world with autonomous Fable-class models
How I Built the Most AI-Pilled Company in the World Don't be put off by the clickbait headline, this piece by Jacob Sansbury describing how they are building Spawn is a fascinating exploration of the bleeding edge of what's possible with agentic engineering against frontier models.
Heat of this event
Not enough continuous observations yet to draw a trend.