Anthropic Tightens Claude Code Rules to Prevent Video Game Clones

Artificial intelligence company Anthropic is actively curbing the ability of its coding agents to duplicate established video games, updating its system directives to prevent intellectual property violations, according to reports from Game Developer and GamesBeat.

The shift directly targets Claude Code, a specialized AI coding assistant capable of analyzing full codebases, modifying files, debugging code, and building interactive software via natural-language instructions. After developers observed new restrictions in the model's instructions, Anthropic technical staff member Addy Osmani confirmed the deliberate policy adjustment on X.

"We added two sentences to Claude Code's prompt on Opus 5.5 to steer it away from recreating someone else's specific game because using Claude to infringe IP is against our usage policy," Osmani stated, as cited by GamesBeat. Osmani clarified that the platform will still support development for "original games, genre games, and games built from your own designs and assets."

The intervention follows a rapid proliferation of generative software tools capable of cloning core gameplay loops in minutes. The influx of AI-assisted replicas has sparked widespread alarm across game development circles, prompting several studios to reconsider or outright cancel public playtesting sessions to protect their proprietary mechanics from instant duplication.

For the interactive entertainment sector, the issue highlights how rapidly agentic coding models have outpaced established IP enforcement frameworks. As Hollywood Tomorrow notes, AI infrastructure providers are facing mounting pressure to install proactive guardrails rather than forcing copyright owners to police unauthorized clones after they appear online.

Anthropic signaled that it intends to continuously iterate on its prompt restrictions, attempting to maintain developer flexibility while insulating the company and its users from potential legal liabilities.