Anthropic adds restrictions to prevent Claude from cloning popular video games

New guardrails for Claude Code

Anthropic has implemented new restrictions on its AI assistant, Claude Code, to limit its ability to recreate specific video games. The company wants to ensure that its tools are not used to produce copies of titles owned by other developers. This update specifically targets the reproduction of popular games like Minecraft and Candy Crush.

The change was initiated to address growing concerns that artificial intelligence could make it easier to reproduce copyrighted games without permission. By placing these boundaries in place, Anthropic aims to protect the intellectual property of the gaming industry. The company is trying to balance the power of its creative tools with the legal and ethical requirements of copyright law.

According to Anthropic technical staff member Addy Osmani, the company updated the instructions provided to the AI. He noted that they added two sentences to the prompt on Opus 5.5 to steer the model away from recreating someone else's specific game. This move ensures that using Claude to infringe on intellectual property remains against the company's usage policy.

Defining protected intellectual property

Video games are complex pieces of media that contain a wide variety of protected elements. These include original characters, unique artwork, specific music, and the underlying code that makes the game function. Many of these components are protected under various intellectual property laws, which prevent others from profiting from them without authorization.

The restrictions are designed to prevent the AI from generating these specific elements for a user who is trying to clone a known title. While the AI can still generate code, the goal is to stop it from mimicking the specific

Rising concerns over game cloning

The decision by Anthropic follows a period of increased attention toward AI-generated versions of popular video games. These projects have gained visibility online as users attempt to use generative technology to replicate well-known experiences. Such activity has highlighted how easily AI could be leveraged to produce clones of established titles.

Specifically, browser-based projects have already attempted to recreate major titles like Grand Theft Auto V and Halo: Combat Evolved. These examples demonstrate the level of detail that current AI tools can achieve when tasked with mimicking existing software. The move by Anthropic serves as a direct response to these types of unauthorized recreations.

Impact on independent developers

Independent developers have voiced significant concerns regarding the appearance of AI-generated copies on major distribution platforms like Steam. There is a fear that these tools could saturate the market with low-effort clones of original works. This creates a difficult environment for creators who rely on unique designs and original assets to build their careers.

Anthropic is now working to address these concerns by creating a distinction between using AI for inspiration and using it for replication. While developers can still use the tool to build new puzzle games or sandbox experiences, the company wants to prevent it from being a shortcut for copying others. This policy aims to protect the integrity of the gaming marketplace for smaller creators.

Feedback and future challenges

To ensure the new restrictions are working effectively, Addy Osmani has invited users to report specific instances where Claude refuses requests involving games they own. This feedback loop allows the company to monitor how the AI handles different types of prompts. It helps the technical team understand where the boundaries are being enforced and where they might need further refinement.

This update highlights a broader challenge for AI companies as they strive to make creative tools more powerful. They must find a way to provide high-quality assistance without enabling the unauthorized use of other people's work. Anthropic plans to continue adjusting its approach to find the right balance between utility and intellectual property protection.