GoKawiilAnthropic confirms Claude Code was updated to block cloning of existing video games
Anthropic developer advocate Addy Osmani confirmed the company added two sentences to Claude Code's Opus 5.5 prompt instructing it to avoid recreating a specific existing game, even if renamed, citing its usage policy against IP infringement. He said original games, genre games, and projects built from a user's own designs and assets should still work, and that Anthropic will keep adjusting the rules. The change follows developer complaints on GitHub that Claude Code was refusing game-building and reverse-engineering tasks.
GoKawiil's interpretation of the reporting above, not reported fact.
The episode shows how AI coding assistants are being tuned with policy-driven guardrails that can misfire, blocking legitimate original work alongside clear cases of IP infringement. Developer backlash suggests Anthropic's prompt-level restrictions are imprecise enough to need ongoing manual fixes, which could signal broader challenges in balancing copyright protection with usability as coding AIs grow more capable. Osmani's invitation for affected users to flag issues indicates Anthropic is still calibrating the policy rather than treating it as finalized.
- Anthropic added prompt restrictions to Claude Code's Opus 5.5 to prevent cloning specific existing games.
- Original games, genre games, and user-designed projects are intended to remain unaffected.
- Developers have reported Claude Code also blocking reverse-engineering tasks, prompting Anthropic to say it will keep refining the rules.
Source: tomshardware.com — Bruno Ferreira, 2026-11-02
Published there as: “Anthropic confirms new Claude Code limits to prevent game cloning — users report Opus 5.5 is also actively blocking reverse engineering tasks”
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