Nino-knirk-pe-nswtch-[base]-nsp-ziperto.part1.rar 99%

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

The file format (Nintendo Submission Package) used for installing games on modified consoles or emulators. NINO-KNIRK-PE-NSwTcH-[BASE]-NSP-Ziperto.part1.rar

Indicates this is the base game file, not an update or DLC. Because this is labeled "part1", you will need

Represents the game title, which appears to be NinoKuni (Ni no Kuni) for the Nintendo Switch. Because this is labeled "part1"