This indicates the inclusion of three downloadable content packs, typically including items or extra story content, bundled within the package.
This is the standard digital format for Switch software, used by both the official Nintendo eShop and custom firmware installers. Download Sword Elpisia [3DLC] NSP rar
The "NSP" and "RAR" designations refer to the file's packaging rather than the game itself. This indicates the inclusion of three downloadable content
Easily Add Updates & DLC To Nintendo Switch Games - Windows - YouTube. This content isn't available. YouTube·Harrison Hacks Download Sword Elpisia [3DLC] NSP rar