The file "POKEMON-LETS-GO-EEVEE-NSP-ROMSLAB-40-1-1.r" is a Nintendo Switch digital package (NSP) for Pokémon: Let's Go, Eevee!
This is arguably the most important section of this article. POKEMON-LETS-GO-EEVEE-NSP-ROMSLAB-40-1-1.r.
: This stands for Nintendo Submission Package . It is the official file format used by Nintendo for games, updates, and downloadable content (DLC) hosted on the Nintendo eShop. The file "POKEMON-LETS-GO-EEVEE-NSP-ROMSLAB-40-1-1