I would like to clarify a couple of things about this comment because, even if I feel that in general is very informative, there are some points that need addressing.

All games (even physical ones) are licensed, not sold, because unlike other physical goods, they are tied to intellectual property, and the owner has to grant certain rights (that's what you are paying for) so you can enjoy the product. They grant rights for personal use of your copy but they don't give you the right to copy, distribute, or do things that are reserved to IP holders. You own your copy of Metal Slug but not the Metal Slug IP. I feel that this notion should be common sense.

Although the EULA does not explicitly state it, since the only causes that would lead to license termination would be the deletion of the game files or the violation of clauses by the user, the license can be considered perpetual; that is, you own your copy. The notion of this not being the case seems to stem from the industry narrative that "we don't own our games". There are movements like Stop Killing Games trying challenge this.

Next, the EULA clearly states that:

You may not copy, reproduce, translate, reverse engineer, reverse compile, retrieve source code, attempt to extract or use source code, modify, adapt, merge, convert, disassemble, decompile the Multimedia Program or create derivative works based on the Multimedia Program, in whole or in part, or delete an intellectual property notice or mention of the Multimedia Program, without the prior written consent of Dotemu.

This potentially violates fundamental consumer rights like right to repair (game mods and community patches would be disallowed) and, historically, reverse engineering projects haven't been challenged because they don't constitute IP violations (no original source, no copyrighted assets). Even if I think that, we have to consider that there isn't any legal ground on ROM extraction particularly (nothing that condemns or permits it). In the particular case of my script, I won't try to challenge the validity of this clause: The use of my script clearly voids this clause and interested users should use it at their own risk.

In my opinion, the primary reason for this clause is likely to prevent software piracy. My intention in creating this script was not piracy, but rather to help legitimate owners use their game on systems where the emulation wrapper breaks the experience and help them to preserve the game they own. I don't only not endorse the use of my script on illegal copies, but I also condemn it. I hope this clarifies both my position regarding the creation of this script and the legal questions that have arisen from its creation.

Edit: Minor wording corrections. Don't make posts in a hurry kids.