Anthropic Claude Blocks Game Cloning and Reverse-Engineering, Users Say

Reports from users say Anthropic's Claude Code and Opus 5.5 are refusing some game development, reverse-engineering and troubleshooting requests. The refusals may be tied to a rule against recreating a specific existing game, though Anthropic has not issued an official statement.

Reported blocks on game work and reverse engineering

According to multiple user claims, Claude is blocking attempts at innocuous reverse-engineering, including work using the Reverse Engineer Anything tool. The same reports include refusals during standard game work halfway through development, when replicating a game mechanic, and when patching a tabletop-like game. At least one report is described as coming from a bona fide developer with a real track record, while others may have nefarious purposes.

A text rule allegedly now in force tells the model: 'Do build original games, games in a genre, and games from the user’s own designs and assets. Don’t build a recreation of a specific existing game, even if it is renamed or called original.' There is no official or additional confirmation that this is the actual rule text, but the refusals reported over the past week make it plausible.

Security program and timing questions

Reports also say Claude blocked some developers' anti-cheat development and security reviews for their own games, with safeguards cited as the reason. Anthropic introduced its Cyber Verification Program on October 6, limiting access to frontier models' advanced cybersecurity capabilities to entities covered by Project Glasswing, with immediate effect. It is possible that the same ruleset is causing the cybersecurity-related refusals, although the game and security restrictions may be a coincidence. Reports of bot refusals have only come in during the last week or so, despite 24 days having passed since October 6.

Broader context and reactions

One possible motivation is that Anthropic and other AI companies are preemptively protecting themselves from potential lawsuits from software companies, including game studios, over tools that can reverse-engineer software. There is no official statement on these matters from Anthropic or other AI companies. Recently, OpenAI deactivated the account of another person trying to clean up their TV's software.

The online reaction suggested that users seeking reverse-engineering work use Chinese, open-weight, or local LLMs instead of Claude or GPT. That reaction also highlights the irony that frontier AI companies copied the world's information and art for training sets and are now concerned with copyright infringement. Recent AI-powered clones of application suites such as Adobe's suite and Microsoft Office 365, along with countless recomps and decomps of console games, likely have software companies and their legal teams rethinking their positions. Separately, reports describe Steam Next Fest as full of AI slop copied from existing titles, with developers reportedly extorted under threat that their game demos will be cloned into complete games before the originals are finished and released, especially affecting small studios.

Sources: Tom's Hardware