Anthropic has updated the system prompt for Claude Code to stop the tool from recreating specific existing video games. This change addresses a growing issue where retro gaming is being overrun with AI-made decompilations, recompilations, and ports. While the company will still allow users to build original games, create titles in specific genres, or develop projects from their own designs and assets, it now explicitly forbids building a recreation of a specific existing game. The update follows reports from users who discovered two new sentences added to the instructions last week. These sentences instruct the model to avoid cloning specific titles even if the user provides a detailed description or assets from that game. The restriction targets direct copies rather than general development tasks.
This move matters because it attempts to draw a line between inspiration and infringement within the generative coding space. By blocking the creation of clones, Anthropic aims to protect intellectual property without stifling the development of new games in established genres. The policy clarifies that the tool should assist with original creation rather than reverse engineering or rebuilding known products. This distinction helps maintain a clearer boundary for developers using the service.
- Original games remain permitted for development.
- Genre-based creation is still allowed.
- Direct cloning of specific titles is now blocked.
