Claude Code 2.1.317, creates original games even when existing games are mentioned

Anthropic released Claude Code 2.1.317, revising the game-development rules in its AI coding tool so that when users cite an existing game to describe the style they want, it builds an original game of that genre rather than a clone, and suggests a similar-game approach when users ask for a replica. Team member Addy Osmani explained the change in a February 4 X post, saying the prior two-sentence rule in the Opus 5.5 prompt restricted duplication of specific existing games over intellectual-property concerns tied to Anthropic's usage policy. The revision matters because it loosens a constraint that had limited how directly users could reference known titles when prompting for new games. What to watch next is whether the adjusted rules hold across future Claude Code and Opus prompt updates, and how users respond to the original-versus-replica distinction.