Claude Code · Anthropic · Claude · GitHub · Tom's Hardware
Anthropic confirms new Claude Code limits to prevent game cloning
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Anthropic's recent move to have Claude Code deny video game cloning and possibly reverse engineering efforts has come under heavy fire from the software development community.
Key facts
- In the full tweet, which you can read below, Addy Osmani says that "[Anthropic] added two sentences to Claude Code's prompt on Opus 5.5 to steer it away from recreating someone else's specific game
- As far as they can ascertain, it appears the game-related blocking is limited to the combination of using Claude Code and the Opus 5.5 model
- He notes that such work had been performed with no issue until yesterday, October 31, and that switching to Opus 4.8 let him continue his work
- Meanwhile, notices that Claude Code appears to block reverse-engineering continue to mount, now with a Redditor allegedly having their account suspended, and then reinstated, over using Opus 5.5
Summary
In the full tweet, which you can read below, Addy Osmani says that " added two sentences to Claude Code's prompt on Opus 5.5 to steer it away from recreating someone else's specific game because using Claude to infringe IP is against usage policy. There's no telling what those sentences might be, though given Osmani's choice of words, it's possible that said sentences are indeed what X user Chasm posted a screenshot of: "Do build original games, games in a genre, and games from the user’s own designs and assets. In their previous report, they had already linked to recent issues raised at Claude Code's own GitHub repository, comprised of users complaining that the AI assistant was refusing to work on their games or on reverse-engineering tasks.