This is where the "Archive" aspect gets murky. Because anyone can upload to the Internet Archive, quality control is inconsistent.
: These files are commonly used with custom firmware (CFW) like Atmosphere or emulators such as Ryujinx. Why Archive.org Hosts NSP Files Archive.org Information archive.org nsp
The quality of the games varies, as one would expect from a community-driven archive. Some games are ripped from cartridges, while others are downloaded from the eShop. I've encountered a few games with minor issues, such as missing textures or minor glitches, but overall, the games are surprisingly well-preserved. This is where the "Archive" aspect gets murky