Anthropic Blocks Claude From Cloning Video Games

Anthropic has updated the system prompt for Claude Code to prevent the tool from being used to recreate existing video games, as reported by Tom's Hardware. The change targets a specific problem: retro gaming is currently being flooded with AI-made decompilations, recompilations, and ports. Anthropic is still letting people use Claude Code to build games, so the company is drawing a line between creating new games and copying existing ones. For developers, product teams and anyone building AI tools, this is a useful signal. Clear usage rules around intellectual property are becoming part of the product itself, not just a legal footnote. Companies deploying AI coding assistants should expect similar questions from their own users and plan guardrails accordingly.