Anthropic clamps down on Claude’s AI video game clones

The Verge · Jay Peters · 2026-11-02 18:56 UTC

Anthropic has updated Claude Code’s system prompt on Opus 5.5 to prevent the AI tool from being used to re-create existing video games.

Anthropic has updated Claude Code’s system prompt to prevent the AI tool from being used to re-create existing video games, as reported by Tom’s Hardware. Retro gaming is currently being overrun with AI-made decompilations, recompilations, and ports, but while Anthropic will still let people use Claude Code to make games, it doesn’t want people to use it for direct clones.

Last week, a user on X posted a screenshot allegedly showing two new sentences added to Claude Code’s system prompt: “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 named or called original.”

[Media: https://twitter.com/chasmmmmmmmmmmm/status/2116062991686721968]

Read the full story at The Verge · All coverage of this story