// TOM'S HARDWARE US — HARDWARE & GADGET
Anthropic's Claude AI blocks video game cloning and reverse-engineering
Many game developers are reporting Claude's refusal to work on their own projects.
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Reverse-engineering games for converting them between systems is currently a hot topic, and it's getting messier by the day. According to multiple user claims, Anthropic's Claude Code and/or Opus 5.5 model are blocking attempts at innocuous reverse-engineering, including but not limited to those using the popular Reverse Engineer Anything (REA) tool. That issue may be linked to a text rule that's now in force, which allegedly instructs the model to avoid "[recreating] a specific existing game."According to Twitter user Chasm, the game-related textual rule is "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 if this is the actual rule text, but it's plausible enough given the very clear refusals that devs have been encountering over the past week.
This situation is tricky to analyze due to the varying types of reports. First, the existence of a game-related rule is real, as Claude Code's GitHub is seeing an influx of issues complaining about refusals to do standard game work halfway through development, when replicating a game mechanic, and patching a tabletop-like game. It's possible that some of those reports have been made by users with nefarious purposes, but at least one is a bona fide developer with a real track record.
As for reverse engineering, there had already been a smattering of user reports across Reddit and other platforms, wherein Claude refused to perform tasks like (allegedly) analyzing a simple Windows crash dump, clearing up junkware on a Samsung TV, or just using REA altogether.
The simultaneous timing of both game- and cyber-security restrictions may be a coincidence, and yet there are complaints from purported game developers saying that Claude blocked their own games' anti-cheat development and security reviews, under the justification that its safeguards were triggered.
Anthropic introduced its Cyber Verification Program on October 6, essentially saying that access to its frontier models' advanced cybersecurity capabilities would be limited to entities covered by Project Glasswing, taking effect immediately.
It's possible that whichever ruleset was applied is the same one that's causing the cybersecurity-related refusals. Still, it's odd to see that 24 days have passed since then, and yet reports of bot refusal are only coming in since the last week or so.
As for possible motivations behind these restrictions, they are twofold. The first and most obvious one is that Anthropic — and, by extension, other AI players — are preemptively protecting themselves from potential lawsuits from software companies, including game studios, for offering the means to reverse-engineer their software.
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