This is the official file format for digital games from the Nintendo eShop. Unlike XCI (which mimics physical cartridges), NSP files are "native" digital files designed to be installed directly to your system storage or SD card.

: The NSP of Xenoblade Chronicles Definitive Edition is more than just a pirated file; it’s a container for one of the greatest JRPGs of all time. When used correctly, it offers faster load times, easier modding, and the convenience of digital storage.

The text you've provided appears to be a portion of a file name typically associated with

Have you played Xenoblade Chronicles? What’s your favorite moment – the view from Colony 9, or the twist at Prison Island? Let me know in the comments below!

The title you posted ends in . This is the file extension used for Nintendo Switch eShop titles. When you see a filename formatted like "Xenoblade Chronicles Definitive Edition -NSP--B...", it is typically a "dump" of a digital game cartridge intended for use with modded Switch consoles or emulators.