In Extremis [010009f01822c000][v0][us].nsp.rar -

: This denotes the region . In this case, the software is the United States/North American version, which may differ from European or Japanese releases in terms of language support or local ratings.

: This is the Title ID . Every piece of software on the Nintendo Switch has a unique 16-character hexadecimal identifier. This ID is used by the console's operating system to manage save data, updates, and DLC. In Extremis [010009F01822C000][v0][US].nsp.rar

: This indicates the file has been compressed using the WinRAR archival tool to reduce its size for easier storage and transfer. Context of Use : This denotes the region

: This is the file extension for a "Nintendo Submission Package." It is the format used for digital titles on the Nintendo eShop. In Extremis [010009F01822C000][v0][US].nsp.rar