Splatoon 3 - [0100c2500fc20800][v655360][us].nsp ...

: Specifies that this file is from the North American region .

: This is the unique Title ID for the North American (US) version of Splatoon 3 . Every software title on the Nintendo Switch has a specific 16-character hexadecimal ID. Splatoon 3 [0100C2500FC20800][v655360][US].nsp ...

The string refers to a digital software package for Splatoon 3 on the Nintendo Switch. This specific filename follows a standard convention used in the homebrew and emulation community to identify game titles, versions, and regions. Technical Breakdown of the Filename Splatoon 3 : The human-readable title of the game. : Specifies that this file is from the North American region