It's a bit of a mystery! While some sources suggest it stands for Named Binary Serialized Object Notation , it's more likely that the term was derived from No Man's Sky Online Save Editor or even inspired by the JSON file format.
If NSON is unavailable or too risky, consider these mainstream options: nson save editor new
goatfungus/NMSSaveEditor: No Man's Sky - Save Editor - GitHub It's a bit of a mystery
For a "NEW" experience, many developers release updates on or GBAtemp forums . nson save editor new