The Switch release (available at Nintendo eShop and other retailers ) packs several significant upgrades over the original 3DS handheld version:
If you have an NSP of the base game, you can install update (e.g., River City Rival Showdown [0100ABC123456800][v65536].nsp ) via Tinfoil or DBI Installer on a modded Switch, or by adding them to your emulator’s update directory. River City- Rival Showdown Switch NSP XCI -Upda...