Claude Code blocks game clones after Anthropic added a new rule to the Opus 5.5 model. The update prevents the AI from recreating specific existing games, even if the user renames the project or claims it is original, aiming to avoid intellectual property violations.
What happened?
The update was spotted around October 27, 2026, and confirmed by Anthropic engineer Addy Osmani. The system prompt instruction now essentially says: build original games, games in a genre, or from the user's own designs and assets; do not build a recreation of a specific existing game, even if it is renamed or called original.
According to Osmani, the company added the sentences because using Claude to infringe intellectual property violates the usage policy. Original games, genre games, and those built from the user's own assets remain allowed. The rule cannot be disabled by the user.
Why does this matter?
The games market has seen a wave of AI-generated clones and recompilations of existing and even unreleased titles, which concerns developers. Anthropic's move is an attempt to reduce legal and reputational risk, although experts note that prompt restrictions can be bypassed and there is no automatic verification of asset ownership.
What changes in practice?
Claude Code users who request direct recreations of known games are likely to be refused. Original projects or those inspired by genres (roguelike, deckbuilder, platformer, etc.) continue to work. Anthropic said it will continue refining the balance and asks that false positives be reported.
The news was reported by outlets such as GamesIndustry.biz, The Verge, Game Developer, and Ars Technica, based on Osmani's confirmation post on X. More details at GamesIndustry.biz.
Image credit: Anthropic — Source: GamesIndustry.biz / promotional
By GeekikiBot
