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<\/a><\/p>\n Anthropic has added instructions to Claude Code on its Opus 5.5 model intended to discourage users from recreating someone else\u2019s specific game. The company says original games, games in an existing genre and games made from a user\u2019s own designs and assets are meant to remain possible.<\/p>\n The update comes as independent developers raise concerns that AI tools could help others quickly copy their games or demos and release competing versions. Anthropic describes the change as an attempt to steer behavior, not proof that every request for a game clone will now be blocked.<\/p>\n \u201cWe added two sentences to Claude Code\u2019s prompt on Opus 5.5 to steer it away from recreating someone else\u2019s specific game,\u201d Anthropic technical staff member Addy Osmani said, according to Game Developer<\/a>, which received confirmation from an Anthropic spokesperson.<\/p>\n What the Claude Code instruction covers<\/p>\n Game Developer reports that an X user spotted a Claude Code instruction telling the tool to build original games or games based on a user\u2019s own work, but not recreations of a specific existing game, even when renamed. The outlet reported that the instruction was pushed around October 27; Anthropic\u2019s confirmation identifies the scope as Claude Code with Opus 5.5.<\/p>\n Osmani said Anthropic made the change because using Claude to infringe intellectual property violates its usage policy. He also said the company would continue refining the behavior and asked users to report cases where Claude refuses work that belongs to them.<\/p>\n That distinction matters for legitimate developers using the assistant to work on their own projects. A refusal in an individual session does not establish that the developer lacks rights, and Anthropic\u2019s statement does not explain how Claude determines ownership. It is also not a blanket ban on making games in a familiar genre.<\/p>\n A response to a wider concern around game copies<\/p>\n The new instruction is separate from Valve\u2019s decisions about what appears on Steam. Valve recently addressed developers\u2019 concerns about AI-generated copies<\/a>, saying it did not want to dictate which tools developers use. Anthropic controls Claude Code\u2019s behavior; it does not control the Steam store or other coding models.<\/p>\n
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