Can You Copyright a Game Idea? Protecting Your Game Design in 2026

One of the most common questions I get from game designers and developers is some version of: “I have this great idea for a game. How do I protect it from being stolen?”

It’s a completely understandable concern. And unfortunately, the honest answer is going to disappoint you a little before it empowers you.

Copyright Doesn’t Protect Your Idea

Let me start with the rule that trips up almost every creator: copyright protects expression, not ideas.

This is known as the idea/expression dichotomy, and it is fundamental to copyright law. You can hold a copyright in your specific artwork, your written rules text, your character designs, your original music. What you cannot copyright is the underlying concept or mechanic.

You cannot own “a game about building civilizations.” You cannot own “a card drafting mechanic.” You cannot own “a deck-building system where players purchase cards to add to a personal deck.”

Anyone who builds a game using those concepts does not need your permission.

In the tabletop space, courts treat winning conditions and rules as the environment for creative expression rather than the expression itself. In the video game space, the principle is the same: a game about shooting space rocks or stock characters in a fighting game are ideas that belong to everyone.

What IS Protectable

So what can you actually protect?

• Artwork and visual design: The specific illustrations, character art, card layouts, and graphic design elements in your game are protected by copyright the moment you create them. Registration is not required for protection to attach, but it is required before you can sue for infringement in the US, and it unlocks statutory damages.
• Written content: Your rulebook text, flavor text, and narrative elements are protected as literary works.
• Your game’s name and brand: Trademarks protect your game’s title and logo. If your game gets traction, trademark registration is worth pursuing. I typically recommend it earlier than that, to make sure you’ve reserved rights in your game’s name pre-release.
• The overall audiovisual experience (video games): For video games, registering as a Motion Picture/Audiovisual Work is generally more effective than registering the underlying code, because a competitor can rewrite the code entirely and still clone the experience. What’s harder to replicate without infringement is the specific visual and audio expression. This type of registration covers the entirety of the game.
• Patents (in limited cases): Novel mechanical inventions or specific technical implementations can theoretically be patented, but this path is expensive, slow, and usually impractical for indie studios and individual designers. General game rules are not patentable subject matter.

The Tension: Building an Audience vs. Keeping It Quiet

Here’s where things get strategically complicated.

To build an audience for your game before it ships, you almost certainly need to show it to people. Playtesters. Publishers. Convention attendees. Journalists. Crowdfunding backers.

The entire modern pre-release ecosystem in both video games and board games is built on public exposure before launch.

But the moment you show your game publicly, anyone who sees it can theoretically walk away and build their own version using the same core concept and mechanics, completely legally.

This is not hypothetical. The indie mobile game Threes! launched in 2014 to critical acclaim after a long development process. Within a year, a free clone called 2048 had replicated its core mechanics and effectively eclipsed it commercially. The creators of Threes! had no legal recourse for the mechanic itself — only for specific audiovisual elements that weren’t copied.

This scenario plays out in board games too, just usually more slowly and with less viral reach. See the situation with the Bang! card game and Legends of the Three Kingdoms — essentially a clone with new artwork and theming.

NDAs: Useful in Some Contexts, Limited in Others

You can use Non-Disclosure Agreements to add a layer of protection during pre-release discussions.

A playtest NDA can prevent testers from sharing your game’s details publicly, give you some leverage if someone tries to copy specific protected elements, and signal that you take confidentiality seriously.

A few practical notes:

• NDAs don’t prevent someone from independently developing something similar if they genuinely do it independently.
• Most publishers won’t sign them before a pitch. This is standard industry practice, so don’t be surprised or alarmed when they decline.
• NDAs are best suited for more controlled pre-release testing situations, not broad public campaigns.
• The value of an NDA is as a deterrent and a paper trail if you ever need to take action, not as a blanket shield against all copying.

The Real Strategy: Be the Best Version

Here’s the honest truth: trying to legally prevent someone from copying your game’s concept is largely a losing battle, and often a distraction from what actually matters.

It’s also worth considering: the odds are good that someone, somewhere, has already had the same idea you have. The difficult part isn’t having the idea. It’s doing the hard work of turning that idea into a complete, polished, and genuinely fun game.

The best protection is execution. Be the first. Be the best. Build the audience. Get the game in front of people who care about your specific vision.

The creators of Catan couldn’t stop anyone from making a resource-trading settlement game. But they built a brand, a community, and a game with enough distinctive expression and staying power that the clones have never truly threatened it. The same is true for Dominion in deck-builders and Ticket to Ride for route-building games.

Protecting what you can actually protect (artwork, brand, expression) is worth doing and you should do it. But pouring energy into trying to legally lock up an idea is usually energy better spent making the game better and getting it to market faster.

What You Should Do

• Register your copyright for your game’s artwork and written content. Registration through the US Copyright Office costs as little as $65 and is required before you can sue for infringement. However, if you’re just shopping around a prototype without final art and design, this doesn’t have much use at that point.
• File a trademark application for your game’s name before launch, not after. A registered trademark gives you nationwide priority and a public record of ownership.
• Use playtest NDAs for controlled pre-release testing with external testers, particularly if you’re sharing detailed proprietary design documentation.
• Don’t expect publishers to sign NDAs before a pitch. Focus on pitching to reputable publishers with a track record of fair dealing.
• Spend your energy on execution. The creator who ships a polished, well-marketed game almost always wins over the one who spent those same months on legal strategy for something that can’t be legally protected anyway.

If you have questions about protecting your specific game, feel free to reach out to your favorite game lawyers.