Claude Code reportedly told not to recreate specific games amid board-wargame developer complaint

Claude Code has an instruction not to recreate specific existing games, even under different names, Wccftech reports. Sebastian Castellanos quotes it as saying, “Do not build a recreation of a specific existing game, even if it is renamed or called original.” The report says original games, games inspired by existing genres and projects using users’ own designs and assets remain permitted.

Wccftech traces the discovery to a post by Chasm, who claimed the instruction appeared around Oct. 27 in a server-delivered configuration called tengu_heron_brook. According to Castellanos, Anthropic’s Addy Osmani confirmed that two sentences had been added to Claude Code’s prompt for Opus 5.5 to discourage intellectual property infringement. Osmani acknowledged possible unintended consequences and encouraged developers whose projects were incorrectly rejected to report their experiences, the article says.