AI agents are being tested inside an open-source game

World of Claudecraft is an MMORPG built with Fable in less than a day. Most of the game was made through . After launch, about 8,000 people started playing, and many began adding updates.

People then started building AI agents with Codex and Claude Code that can actually play the game. The project now works as a shared place where contributors and agent builders can test and deploy agents in a live game world.

Key points

  • World of Claudecraft is an MMORPG built with Fable.
  • About 8,000 people started playing after launch.
  • began contributing updates soon after the game went live.
  • AI agents built with Codex and Claude Code are being used to play the game.
  • The game can serve as a public test space for agents.
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