For researchers and preservationists, certain archival platforms host ROM sets under a library-style model:
remains illegal because it involves creating an unauthorized reproduction of the code. The "Backup" Gray Area: link download complete nes rom set
: Nintendo and third-party publishers release mini consoles (like the NES Classic Edition) preloaded with NES games, offering a legal way to play classic games. Ripping Your Own Because of Abandonware and Backups
—state that downloading ROMs, even if you own the game, is prohibited. Ripping Your Own Nintendo of America, Inc
Because of Abandonware and Backups . In the United States, the case Lewis Galoob Toys, Inc. v. Nintendo of America, Inc. (1992) suggested that users have a fair use right to create backups of software they own. Therefore, legally, you can only download the ROM of a game you physically own.
The legality of downloading ROMs is a complex and debated topic. While ROMs themselves are not illegal, downloading copyrighted games without owning the original copy or permission from the copyright holder can be considered piracy. Many argue that downloading ROMs for games they own or for freeware titles is acceptable, while others believe that it infringes upon the rights of game developers and publishers.
Many NES games are "orphan works"—their original publishers are defunct, and their copyrights are held by entities that may not even know they own them. In these cases, community-led archiving is often the only way these games are saved from disappearing forever Ethical Considerations