Anthropic Updates Opus 5.5 System Prompt to Ban Recreating Others' Games

Techub News reports that Anthropic has confirmed adding two rules to the system prompt of the Opus 5.5 model to guide Claude not to recreate specific games belonging to others. This update addresses situations where Claude Code was used for game cloning, reverse engineering, and platform-exclusive cracking. Anthropic's rules permit creating original games, certain types of games, and games made using users' own designs and assets, but prohibit replicating specific games that already exist, even if the name is changed or it is called an original game. Recently, some developers have reported that this restriction mistakenly affects original game development and common game mechanic reproductions, with related discussion increasing on a GitHub issues page. (Quantum Bit)