Laws allow you to make a personal backup copy of software you own. If you own Super Mario Odyssey on a cartridge, you can dump that cartridge to a ROM file for personal use. However, sharing that file with anyone else (uploading it) is illegal. Downloading a ROM from a stranger is illegal because you do not have permission to copy that specific digital file.
But what exactly is a ROM? Is it legal? Can your PC run Pokémon Scarlet at 60 frames per second (FPS)? This article covers everything you need to know about Switch ROMs, from technical requirements to the intense legal battles currently reshaping the emulation landscape. A "ROM" (Read-Only Memory) is a digital file that contains a copy of the data from a game cartridge. In the context of the Switch, a ROM is usually extracted from an official game card (XCI format) or a digital download (NSP format). Nintendo Switch ROMs
Nintendo will likely keep the Switch 1 eShop open for years, meaning first-party games will remain under active legal protection. However, emulators for the original Switch will mature as developers move on to cracking the Switch 2. For now, the golden age of easy, "drag-and-drop" Switch emulation is over. The desire to preserve video games is noble. Hardware fails; cartridges rot. Emulation ensures that masterpieces like Breath of the Wild survive for centuries. Laws allow you to make a personal backup
Downloading a Nintendo Switch ROM from a public website is illegal in almost every jurisdiction. It violates the Digital Millennium Copyright Act (DMCA) in the US and similar international treaties. Downloading a ROM from a stranger is illegal