: This shows that the original large file has been split into multiple smaller pieces (volumes) to make uploading and downloading easier. Important Technical Notes
: This indicates that the file contains the base game itself, rather than just an update (UPD) or downloadable content (DLC). SMODYSEY-NSwTcH-[BASE]-NSP-Ziperto.part1.rar
: This is the file format (Nintendo Submission Package). It is the standard format used for digital titles on the Nintendo Switch eShop. : This shows that the original large file
: Files in .nsp format are generally intended for use on modified (jailbroken) Nintendo Switch consoles or on PC-based Switch emulators (like Ryujinx). SMODYSEY-NSwTcH-[BASE]-NSP-Ziperto.part1.rar