AI clones and vibe-coded copycat games have become a huge headache for developers recently, but it looks like an update to Anthropic's Claude Code's "rules" has been pushed out. Listed under "tengu_heron_brook," the tweak to the AI now directs it not to copy games and assets, and users cannot disable this setting. Spotted by Chasm on X (via Game Developer ), the full rule reads, "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". Anthropic's Addy Osmani added that "two sentences" were added to Claude Code's prompt on Opus 5.5, to steer it away from recreating someone else's specific game, as "using Claude to infringe IP " is against the company's policy. "Original games, genre games, and games built from your own designs and assets are meant to keep w
Claude Code Just Got A New Rule: Stop Copying Other People’s Games
Original reporting
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