These file formats are primarily used by the Switch modding community to install games and updates manually. The NSP (Nintendo Submission Package) format is the digital equivalent of an eShop download, while XCI mimics a physical cartridge.
The initial download is approximately 1.6 GB to 1.7 GB , though this grows significantly as updates and DLC are added. Essential DLC and Content Updates Asphalt 9 Legends Switch NSP -DLC Update- -eShop-
The most common way to play is through the official Nintendo eShop , where the base game is . These file formats are primarily used by the