Anthropic 更新 Claude 规则禁止复刻现有游戏

Anthropic added a new rule to Claude Opus 5.5, flagged as "tengu_heron_brook," that blocks prompts producing "a recreation of a specific existing game, even if it is renamed or called original." The rule appeared in the changelog around October 27 and has no setting to turn it off. Claude still allows original games, games in a genre, and games built from users' own designs and assets.

X user Chasm spotted an update to Claude's rules pushed around October 27 that permits original games but forbids recreating a specific existing game, even if renamed, with no way to disable it. Digital Sun Games and other studios cancelled public playtests over fears demos could be ingested by AI tools and cloned, and developers have pressed Valve on stopping such clones on Steam. The report notes the rule may only deter low-effort copycats, since users can turn to open-weight models without such limits.