Are gameplay mechanics subject to copyright? I'm willing to remake an old video game, first as a hobby project, but in the future I'd like to publish it online, for free or as a commercial project. I've been reading for a while about copyright infringement, and despite not copying any artistic assets, lore, names, or things like that, I'm afraid I could run into copyright infringement. The reason why I think so, is because I would be using some very specific mechanics that are key to the gameplay, and I suspect those mechanics can be subject of copyright. Without entering into much detail, are there any kind of rules that apply to gameplay or game mechanics regarding copyright?
Copyright does not protect the idea for a game, its name or title, or the method or methods for playing it. Nor does copyright protect any idea, system, method, device, or trademark material involved in developing, merchandising, or playing a game. Once a game has been made public, nothing in the copyright law prevents others from developing another game based on similar principles. Copyright protects only the particular manner of an author’s expression in literary, artistic, or musical form. Link https://www.copyright.gov/registration/other-digital-content/
All your work is yours. They've made it very clear it wasn't a work for hire, so it's yours. They can't copyright any of their ideas. You can't copyright an idea. Only specific creative elements authored by them and present in your work could be covered by copyright. You didn't use their block diagrams. I don't see how references to other sites to look at would constitute a creative element they authored. That said, you probably want to talk to a lawyer and get a written legal opinion that you can rely on.
License to use does not mean license to create derivative works These are different rights under copyright. If you want to make a derivative work, which your animations are, you must have a license to do so.
In general, using content provided by another who incorrectly posted it under a permissive license, such as a CC license, does not grant a valid license from the real copyright holder. That is, if A writes some code (or a song, or creates an image, or whatever else), it is protected by copyright. If B then posts it to the web, with a statement that it is released under a particular license, without having obtained permission from A, then B's &quot;release&quot; is of no value, because B had no rights to grant. If C downloads and uses this content, relying on B's license, then A could take legal action against C. C would probably be considered (in the US) an &quot;innocent infringer&quot; which reduces the minimum statutory damage amount, but does not otherwise change C's legal position. A could, if it chose, bring suit and possibly obtain a judgement including some damages. But to return to the practical case of code posted on one of the SE sites. Given the comparatively short code sections usually posted, and that they do not usually form a complete working program, and given further the stated educational purpose of SE, it is likely that in US law such a posting would constitute fair use, and in the law of other countries fall under one or another exception to copyright. That is a general conclusion, the details would matter. I have not heard of a case similar to that suggested in the question. I find it unlikely that an SE poster would post copyright-protected code without permission, that is valuable enough to be worth an infringement suit, and substantial enough and having enough effect on th market for the original to be outside the protection of fair use. Such a situatiion is, of course, possible, even if unlikely. Note that a cease-and-desist letter is not a court order, and is really only a threat of court action. its only legal effect is to put the recipient on notice, so that continued infringement is not without awareness of the copyright claim. To have legal effect the claimant must actually bring an infringement suit, which is not without cost.
I would argue that no, there is no copyright for the restored work. Independent copyright is only possible for any original material added, as previously discussed on this site. In this case, the added work was a technical process rather than a creative process, and technical processes cannot be protected by copyright. Copyright licenses would therefore be ineffective. However, I believe one could still impose a license based on owning the copy as opposed to the copyright (contract might be a better term in this case). However, if a third party managed to obtain a copy through some other avenue, any such contract would not be binding on them and nothing could be enforced against them unlike with copyright laws. Another way a license might be imposed is through patent protections, as technical processes can be protected via patents. However, I'm not as familiar with patent law, and this doesn't appear to be the claim being made.
Only if you ask Valve for permission first, and they agree in writing. I'm not a lawyer, but when I was reading through the Subscriber license you linked, this stuck out to me: You are entitled to use the Content and Services for your own personal use, but you are not entitled to: (i) sell, grant a security interest in or transfer reproductions of the Content and Services to other parties in any way, nor to rent, lease or license the Content and Services to others without the prior written consent of Valve, except to the extent expressly permitted elsewhere in this Agreement (including any Subscription Terms or Rules of Use); (ii) host or provide matchmaking services for the Content and Services or emulate or redirect the communication protocols used by Valve in any network feature of the Content and Services, through protocol emulation, tunneling, modifying or adding components to the Content and Services, use of a utility program or any other techniques now known or hereafter developed, for any purpose including, but not limited to network play over the Internet, network play utilizing commercial or non-commercial gaming networks or as part of content aggregation networks, websites or services, without the prior written consent of Valve; or (iii) exploit the Content and Services or any of its parts for any commercial purpose, except as expressly permitted elsewhere in this Agreement (including any Subscription Terms or Rules of Use). The part that I've bolded is probably the part that makes this against the Terms of Service, since in order to post these sorts of automated messages to their service, you'd need to use a &quot;utility program&quot; to &quot;emulate or redirect the communication protocols used by Valve in any network feature of the Content and Services, through protocol emulation, tunneling, modifying or adding components to the Content and Services&quot;. I doubt that Valve would ever agree, since such a program could very easily be used to create spam bots that works bombard users with unsolicited advertisements, but maybe Valve would be willing to cut deals with AAA video game companies to let them deploy tools to automatically manage their store pages.
Do you have an explicit permission by the artist? Does the artist give a blanket permission to anyone which covers this kind of use of their work (a license)? If no, then you commit a copyright violation when you use their work for your blog. This applies to practically any country which signed the Berne convention which is almost everywhere in the world. Having no commercial interest is usually not an excuse to violate copyright. Regarding which jurisdiction applies when you, your website and the copyright holder are in different countries: I opened a new question about this.
copyright will cover the names and graphics of games The names of games are not protected by copyright, nor by patent. The names could be protected by trademark. Note that trademarks are specific to a country: what is trademarked in one country may well not be in another. Almost all countries have a way to search their trademark registries, often online. However in some countries, including the US, use of a name in commerce will confer some protection even without registration. What will be considered a &quot;mechanic&quot;? for example MTG have specific mana system, if someone will be creating a game with same idea but will refer to it with other names such as &quot;Ember&quot; instead of &quot;Fire&quot; will it violate the patent? Game mechanics are not protected by copyright. This includes all the procedures and rules of the game. The text used to express those rules may be protected, but often it is not if it is the most obvious way to describe the mechanics. For example, in chess there are different pieces with different moves. That could not be protected by copyright, even if chess were a new game. In bridge the winner of each trick leads to the next. That could not be protected by copyright either, even if bridge were a new game (and contact bridge is just new enough that it could in theory be under copyright still). How do i know if certain patents are applied and when they expire? Most games are not protected by patent, but some are. Patents, like trademarks, are specific to a country. Each country has a way to search its list of active patents. Note that patents have a strict tiem limit, and they normally cannot be extended or renewed. I believe that the limit of a patent is currently 20 years in most countries. (It used to be 17 years in the US.) If a game is patented in Country X and someone is printing the same game but with different art and names in country Y, will the one who print in country Y could be exposed to a lawsuit? Unless the game is also patented in country Y, there will be no grounds for an infringement lawsuit inn Y. But importing the game into X may be patent infringement, and could expose the importer to a suit.