: This represents the software version. Version 262144 typically corresponds to a specific update, such as v4.0.0 , which introduced major content like new seasons.
: A compressed archive format. You must extract this using software like WinRAR or 7-Zip to access the .nsp file inside. Game Modes & Getting Started Splatoon 3 [0100C2500FC20800][v262144][US].nsp.rar
: Indicates the North American region. Note that Splatoon 3 is largely region-free , meaning you can play with others regardless of your local region. : This represents the software version
: This is a digital game package format used by the Nintendo Switch. such as v4.0.0
Here is an informative guide on what these identifiers mean and how to navigate the game: