Anthropic Cracking Down on Video Game Rewrites
Summary
Anthropic appears to be enforcing a new hidden rule in Claude Code, flagged as "tengu_heron_brook," that forbids building recreations of specific existing video games, raising questions about the future of game rewrites and modding with AI tools.
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Cached at: 10/30/26, 03:17 PM
ANTHROPIC IS CRACKING DOWN ON VIDEO GAME REWRITES 🚨
Claude Code picked up a new rule around Oct 27, sent from Anthropic’s servers under a flag called “tengu_heron_brook”. There’s no setting to turn it off.
The full rule: “Do build original games, games in a genre, and games from the user’s own designs and assets. Don’t build a recreation of a specific existing game, even if it is renamed or called original.”
Is this the end of game rewrites, modding and everything in between?
cats already out of the bag
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