Anthropic Stops Claude From Recreating Existing Games

Anthropic has introduced a new restriction on Claude Code that prevents the AI assistant from recreating specific existing video games, even if users change their names or describe the projects as original. The company says the restriction is intended to prevent copyright and intellectual property (IP) violations while allowing developers to continue creating original games.

The change means users can still ask Claude to build games inspired by broader genres, mechanics or their own designs and assets. However, requests to reproduce an identifiable existing title, such as Minecraft or Candy Crush, are now outside the boundaries set by Anthropic’s updated instructions.

The new rule was first noticed by users on X and later confirmed by Addy Osmani, a member of Anthropic’s technical staff. The update highlights the growing tension between AI-assisted game development and the intellectual property rights of game creators.

What Is Anthropic’s New Rule for Claude Code?

The restriction was initially spotted by an X user named Chasm, who shared a screenshot showing a new instruction in Claude Code.

The updated guidance tells Claude to build original games, games belonging to a particular genre, and projects based on designs and assets supplied by users. At the same time, it explicitly discourages recreating a specific existing game, even when the user changes its name or presents it as an original project.

The instruction states: “Do build original games, games in a genre, and games from the user’s own designs and assets.”

It further says: “Don’t build a recreation of a specific existing game, even if it is renamed or called original.”

The wording makes a distinction between creating a new game using general ideas from a genre and reproducing a particular copyrighted title.

Anthropic Confirms the Change

Addy Osmani, a member of Anthropic’s technical staff, subsequently confirmed that the restriction had been added to Claude Code’s instructions.

Responding to the discussion on X, Osmani explained that the company had introduced the additional guidance to discourage Claude from reproducing someone else’s specific game.

“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,” he wrote.

Osmani also clarified that the restriction does not prevent users from developing games that are genuinely their own. He said Anthropic would continue refining the instructions to maintain an appropriate balance between protecting intellectual property and supporting creative development.

Claude Can Still Create Original Games

Anthropic’s update does not mean Claude has stopped supporting game development. Users can still use the AI to create original projects, experiment with established genres and turn their own ideas into playable experiences.

For example, a user can ask Claude to develop an original puzzle game, a platformer or a strategy game using assets and designs they own or have permission to use. The restriction focuses on recreating a specific existing game rather than preventing the use of familiar game genres or general gameplay concepts.

Osmani emphasised this distinction in his response, saying: “Original games, genre games, and games built from your own designs and assets are meant to keep working.”

He added: “We’ll continue to iterate to ensure we’re striking the right balance. In the meantime, if Claude turns down something that’s yours, send it my way.”

This suggests that Anthropic is leaving room for feedback when the system mistakenly rejects a project that a user has the rights to develop.

Why Is Anthropic Restricting Game Recreations?

The company has linked the restriction to its intellectual property policy. AI coding tools can generate substantial amounts of code, making it easier for users to create projects that closely resemble existing commercial games.

However, reproducing a specific game can raise copyright and other IP concerns, particularly when the project copies protected assets, characters, artwork, names or other distinctive elements.

Anthropic’s new instruction is intended to prevent Claude from directly helping users recreate identifiable games. The company has not explained whether a particular incident prompted the update.

AI-Generated Game Clones Have Become a Growing Concern

The restriction comes amid increasing interest in AI-assisted recreations of popular video games. Browser-based fan projects involving titles such as Halo: Combat Evolved, Call of Duty: Modern Warfare 2 and Grand Theft Auto V have drawn attention to how quickly developers can use AI tools to reproduce familiar gaming experiences.

These projects have also raised questions about the boundaries between fan-made experiments, genre-inspired development and unauthorised reproductions of existing intellectual property.

Concerns have extended to independent game developers as well. Some creators have expressed worries that publicly available demos could provide enough information for others to reproduce important parts of their games before their official release.

During Steam Next Fest, complaints about low-effort game clones on Steam added to discussions about the risks facing smaller studios. Developers and publishers, including Alliance Arts and Who You, have also cancelled plans for Steam demos amid concerns that early access to their games could make imitation easier.

Gaming Industry Has Different Views on AI Development

While Anthropic is introducing restrictions around reproducing existing games, other major companies in the Gaming Industry are exploring broader uses of Artificial Intelligence in development.

Epic Games, the company behind Fortnite, has encouraged developers to explore AI-assisted creation and generation as part of game development. Its approach reflects growing interest in using AI to reduce the amount of manual work involved in producing game content.

Microsoft’s Xbox division has also established Xbox Labs, which is focused on exploring emerging ideas in game development. AI tools are among the technologies expected to influence future development approaches.

Electronic Arts has also been pushing for more extensive AI adoption in game production, according to Business Insider.

These developments show that the gaming industry is not taking a single approach to AI. While some companies are exploring wider adoption, others are focusing on restrictions designed to protect existing creative work.

Anthropic’s Previous Intellectual Property Disputes

The new Claude restriction also comes against the background of Anthropic’s earlier legal disputes involving copyrighted material.

Last year, the company agreed to a $1.5 billion settlement in a class-action lawsuit brought by approximately 500,000 authors. The authors had accused Anthropic of using copyrighted material to train its AI models.

More recently, Elvis Presley’s estate filed a similar lawsuit, adding to the legal questions surrounding the use of protected creative works in AI development.

Intellectual property has become a major point of debate across the AI industry, with companies developing chatbots and generative tools facing questions about how copyrighted material is used for training and content generation.

What the New Claude Rule Means for Game Developers

Anthropic’s decision establishes a clearer boundary for users who rely on Claude Code to build games. Developers can continue using the assistant to create original concepts, experiment with genres and implement their own designs, but they should not expect it to reproduce a specific existing title.

The restriction also highlights a broader challenge for AI companies: making creative tools useful without allowing them to become instruments for copying other people’s work.

For independent developers, the issue is particularly important because their games may represent years of creative and financial investment. As AI-assisted development becomes more accessible, protecting original designs and assets is likely to remain a major concern.

Anthropic says it will continue adjusting Claude’s instructions to balance creative freedom with intellectual property protection. For users, the practical distinction is straightforward: Claude can help build a new game, but it should not recreate someone else’s existing one.