[Claude Code Updates Game Development Rules, Allowing Reference to Existing Game Descriptions] According to Addy Osmani, a member of the Claude Code team, in a post on the X platform, Anthropic has modified a game development-related rule in Claude Code version 2.1.317. Previously, Anthropic added two rules to the prompts in Opus 5.5, restricting Claude from replicating specific existing games, arguing that using Claude infringed intellectual property rights and violated its usage policy. However, this rule was also triggered when users merely used a game description to express their desired gameplay, causing Claude to reject projects that should have been completed.