: The regional code, signifying this version was released for the United States eShop. nsp.rar :

This string is a specific for a digital backup of the game Robotry! on the Nintendo Switch.

: Indicates this is the base version of the game (version 1.0.0) without any subsequent updates or patches applied.

: The title of the game, a physics-based platformer where you control the legs of a robot.

Files labeled in this manner are typically found on scene release sites or forums for use with modified (CFW) consoles or emulators. or how Title IDs work for library management?

: The file format for Nintendo Switch submission packages (typically used for digital eShop games).

: A compressed archive file. You would need a tool like WinRAR or 7-Zip to extract the actual .nsp file from this package.