This is the standard format used for digital eShop content. Base games, updates, and individual DLC tables are typically packaged as NSP files.
The base file contains the game's core framework, user interface, menus, and the initial code required to load table assets. Because it is a free-to-play client, the base file size is relatively modest, but it cannot function without subsequent updates or table packages. 2. The Title Update (NSP) Pinball FX Switch ROM NSP UPDATE DLC