Anthropic adds new Claude limits on game recreations
Claude Opus 5.5 now blocks prompts that try to recreate a specific existing game, even under a new name, while still allowing original games and user-made designs.
AI-generated summary based on reporting by Kotaku.
Anthropic has added a new rule to Claude Opus 5.5 that blocks prompts aimed at recreating a specific existing game, even if the game is renamed or presented as original. The rule appears under a code flag called “tengu_heron_brook” and was first spotted by users before showing up in the changelog on October 27.
The new guardrail still allows people to build original games, genre-based games, and projects based on their own designs and assets. But it seems to go further than stopping direct decompilation work. It also appears to block attempts to make something that closely copies an existing game.
Users have also reported broader limits beyond games. Posts on Reddit mention Claude refusing requests tied to unlicensed translations, security research, and published coding books. The reports suggest Anthropic has tightened Claude’s safety rules across more types of content.
Read the original story at Kotaku →