“Claude’s new rules against game cloning won’t stop the AI copying boom”

Key points

• Anthropic introduced a new system prompt restricting Claude models from recreating existing video games.
• The rule, named tengu_heron_brook, appears in Claude Code version 2.1.314 released Oct 30.
• Addy Osmani confirmed two sentences were added to steer Claude away from IP infringement.
• The change aims to balance developer use cases with protection against copyright infringement.
• Industry-wide AI decompilation and porting projects continue, prompting debate over impact and legality.