The .nsp file extension represents a Nintendo Submission Package, which acts as a container format for distributing digital software, including games, patches, and DLC on the Nintendo Switch console. These encrypted packages are utilized by the Nintendo eShop, serving a similar function to XCI files for physical cartridges but in a downloadable format.
The .nsp file extension represents a Nintendo Submission Package, which acts as a container format for distributing digital software, including games, patches, and DLC on the Nintendo Switch console. These encrypted packages are utilized by the Nintendo eShop, serving a similar function to XCI files for physical cartridges but in a downloadable format.