What is nsp files?

NSP files are a type of file format used for Nintendo Switch games. The acronym NSP stands for "Nintendo Submission Package". NSP files contain the game data, updates, and DLC for a specific game, similar to the more common XCI file format for Switch games. NSP files can be installed on the Nintendo Switch using various homebrew software and custom firmware. Some NSP files may be illegally obtained via piracy, which is prohibited by copyright laws. It is important to acquire NSP files through legal means and to only install them on your own legitimate Nintendo Switch systems.