These files are generally used for installation on custom firmware (CFW) Nintendo Switch consoles or for emulation using software like Yuzu or Ryujinx.

Identifies this as the first part of a multi-part RAR archive hosted by Ziperto. Key Information & Usage Notes

The file format (Nintendo Submission Package) used for installing games on modified consoles or emulators.

Because this is labeled "part1", you will need all subsequent parts (part2, part3, etc.) located on the same site to extract the file correctly.

Ziperto is a known repository for Switch NSP/XCI files.

Ensure you have sufficient storage space and the required tools to manage multi-part RAR files.

Based on the naming convention, NINO-KNIRK-PE-NSwTcH-[BASE]-NSP-Ziperto.part1.rar refers to a split archive file for a Nintendo Switch game (NSP format) distributed via the website Ziperto.