An NSP (Nintendo Submission Package) is a file format used for Nintendo Switch digital content, including base games, updates, and DLCs. Because your file is a .rar archive, you will need to extract it using a tool like or 7-Zip to reveal the actual .nsp files inside. Package Contents Typically, a "2 DLCs" bundle for this game includes: Base Game : The core "Real-Time Tactical Battle" experience.
To play these on a modded Switch or an emulator (like Yuzu or Ryujinx ), you have two main options: The DioField Chronicle (NSP)(2 DLCs).rar
you can merge Switch games, updates and dlcs into a single file An NSP (Nintendo Submission Package) is a file