NSP files are Nintendo Switch game packages. They store files like the game ROM, icon, updates and metadata. NSP files install games and apps on the Switch. They are like XCI files.
The SX OS custom...
NSP files are Nintendo Switch game packages. They store files like the game ROM, icon, updates and metadata. NSP files install games and apps on the Switch. They are like XCI files.
The SX OS custom firmware boots the Switch. It allows playing NSP files and Homebrew. Atmosphere and ReiNX firmware also use NSP files. They need the Goldleaf homebrew app.
Windows links NSP files to software. The link registers the file extension to open NSP files. Some files hold text data. Many have harmless extensions. But unknown NSP files can be malware.
Yuzu
Nintendo Switch