Claude Code now refuses to recreate existing games. What the new rule says

What changed

Claude Code now tells Claude not to copy existing games. The rule, in full:

Do build original games, games in a genre, and games from the user’s own designs and assets. Don’t build a recreation of a specific existing game, even if it is renamed or called original.

The first public report came from a user who posts as chasm, who wrote on X on October 30 that Claude Code “picked up a new rule around Oct 27, sent from Anthropic’s servers under a flag called ‘tengu_heron_brook’. There’s no setting to turn it off.” Crypto Briefing, Gameranx and others picked it up the same day. “No announcement came with the change,” Crypto Briefing wrote.

We checked Claude Code’s own program files. The text isn’t in version 2.1.311, released October 26. It is in 2.1.314, released October 30, word for word, as a built-in part of Claude Code’s instructions to the model:

	What we found
Claude Code 2.1.311	No built-in game rule
Claude Code 2.1.314	The rule built in, as a section named “original games guidance”
Which models	On by default for Opus 5.5; Anthropic’s servers can turn it on or off for any model
Served text	2.1.314 skips its built-in copy when the text Anthropic’s servers send already includes the rule, which fits the reports that it arrived that way first
A setting to turn it off	None that Claude Code documents

The changelog for 2.1.312 and 2.1.314 doesn’t mention it.

What still works

More than the headlines suggest. The rule’s first sentence is a list of what Claude Code should build:

• Original games. Your own idea, your own name, your own rules.
• Games in a genre. A roguelike, a falling-block puzzle game, a platformer, a farming sim. The genre is fine; one particular title in it isn’t.
• Games from your own designs and assets. If you bring the design document, the art and the sound, Claude Code is told to build it.

What’s out is “a recreation of a specific existing game,” and the rule closes the two obvious ways around it: “even if it is renamed or called original.” It also ends a popular way of testing models: one user on X lamented that Anthropic “no longer allows good benchmarks like Minecraft or GTA 5 recreational games.”

What nobody has said

Anthropic hasn’t commented. Its newsroom has no post about it, the changelog is silent, and the outlets that covered the rule say Anthropic hasn’t issued a statement. So these are open:

• Why. Commentators guess at copyright worries or, in the same post on X, the coming IPO. Anthropic hasn’t given a reason.
• Ports, mods and decompilation. Gameranx’s headline calls it a crackdown on “ports and decompilations,” but the rule’s text names neither. How Claude treats a port of a game you own, a mod, or a decompiled codebase is up to how the model reads “recreation.”
• Permission. The rule makes no exception for a remake you have a license for. “The user’s own designs and assets” is the only kind of ownership it names.
• The Claude apps. Every report we read is about Claude Code. None shows the rule in the Claude apps’ chat.

It isn’t part of Anthropic’s Usage Policy update either. That update, announced October 8 and in effect from November 12, 2026, covers deceptive campaigns, elections, weapons, surveillance and high-risk uses, and doesn’t mention games. The policy already forbade using Claude to “infringe, misappropriate, or violate the intellectual property rights of a third party.” The game rule’s words go further: they cover any recreation of a specific game, without asking whether it infringes.

What to do

1. Describe your game as yours. Say what it is, not what it’s like: its rules, its look, its name. The rule draws its line at one specific game, so a request built on a genre and your own design stays on the right side of it.
2. Bring your own assets and design. The rule names them as something Claude Code should build from.
3. Don’t look for a switch. Claude Code has no setting for it. Kingy AI, which looked into it, advises against patching Claude Code or deleting its caches, and so do we.
4. If your project is a remake you have the rights to, tell Anthropic through support, and keep a note of the date, the version (claude --version) and Claude’s reply. Other coding agents follow their own labs’ rules and terms, which this rule doesn’t change.

The rule is part of Claude Code itself, so it comes along wherever Claude Code runs, in a terminal or in an app that runs it, Enjoy included. Enjoy also runs Codex, Grok Build, Antigravity, Muse Code and local models through OpenCode, each on its own plan, and can switch the conversation to one of them. That doesn’t change what you’re allowed to make: someone else’s game is still theirs, whichever agent writes the code.

We’ll update this memo if Anthropic explains the rule or changes it.