GoKawiilAnthropic tweaks Claude Opus 4.5 prompt to block cloning of existing video games
Anthropic engineering leader Addy Osmani said the company added two lines to Claude Code's prompt on Opus 4.5 to stop it from recreating specific existing games, citing its usage policy against IP infringement. Osmani said original games, genre-style games, and projects built from a user's own designs and assets should still work, and he offered to review cases where developers feel requests were wrongly refused.
GoKawiil's interpretation of the reporting above, not reported fact.
The change suggests Anthropic is trying to balance the appeal of fast AI-driven 'vibe coding' against legal exposure from users prompting AI to replicate copyrighted game designs. It highlights a broader tension facing AI coding tools: distinguishing between inspired, genre-based creations and outright clones, a line that could become more contested as courts and companies define IP rules for AI-generated content.
- Anthropic adjusted Claude Opus 4.5's prompt to decline recreating specific existing video games.
- Original games, genre games, and user-designed projects are still meant to work normally.
- Anthropic says the move aligns with its usage policy against using Claude for IP infringement.
Source: cnet.com — Omar Gallaga, 2026-11-03
Published there as: “Anthropic Addresses Video Game Cloning With Minor Claude Update”
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