Because "NSP" is a very specific term usually associated with Nintendo Switch homebrew (file format .nsp ), but The Witcher series is multi-platform, the correct guide depends entirely on what you are trying to achieve.
Would you like this adapted into a full quest script with dialogue and choices? the witcher nsp
Geralt finds a bloodstained letter pinned to the door of an abandoned tavern in Velen. No signature. Just a drawing of a black sun eclipsing a cradle. The message is short: Because "NSP" is a very specific term usually
Independent packages that inject individual items, alternative cosmetics, or massive expansions into the main game ecosystem. What’s Included in the Complete Edition Package but The Witcher series is multi-platform