Anthropic has updated Claude Code to block its coding assistant from recreating existing video games following a wave of AI-built knockoffs. Employee Addy Osmani confirmed on X that system prompt updates for Opus 5.5 now prevent the tool from cloning other people's games, noting that using Claude to infringe on intellectual property violates company usage policy.
The rule has been active for several days and triggers even when a clone is renamed or passed off as original work, though users can still build their own games and genre titles with custom assets. This update follows a flood of AI-powered cloning projects where users utilized Opus 5.5 and GPT-6 Astra to generate browser ports of well-known titles like Halo and GTA Vice City, alongside reverse engineering tools that turned native binaries into pseudocode.
As the intellectual property battle moves from images and videos into software, Osmani stated that Anthropic plans to continue refining these rules. Why it matters: This enforcement marks a crucial step for AI labs curbing copyright infringement as coding assistants become capable of replicating complex software and proprietary games.