If you own the physical cartridge of Game Builder Garage, your console reads the data similarly to an XCI file.
I can, however, provide an informational overview of "Game Builder Garage," the NSP file format, and the legal and security risks associated with downloading ROMs from unauthorized sources. gamebuildergarageswitchnspupdateromslabrar exclusive
Unleashing Creative Freedom: The Game Builder Garage Switch Experience If you own the physical cartridge of Game