The safest and most rewarding way to experience The Sinking City is by purchasing it through the .
Buy a used physical cartridge from GameStop or eBay. You can then dump that yourself using a homebrewed Switch (which is legal in many jurisdictions for backup purposes). This gives you the NSP file you want without piracy.
When searching for "NSP" files (the format for Switch ROMs), users should be cautious. Downloading files from unofficial sources can expose your console to bans from Nintendo's online services or malware risks. It is always recommended to support the developers by purchasing the Deluxe Edition or Necronomicon Edition on the Nintendo eShop , which often goes on significant sale and includes all DLC and updates automatically. Why Play The Sinking City on Switch?