You will need a homebrew installer on your Switch. Common options include:
To have the complete experience, ensure you have the following files ready on your computer or SD card: Base Game: Samurai Shodown [01007E300D776000][v0].nsp Latest Update: Samurai Shodown [01007E300D776008][v1.xx].nsp (e.g., Version 2.4.0) DLC Packs: Individual files for characters like Mina, Sogetsu, Iroha, etc. 2. Installation Tools samurai shodown switch nsp update dlc link
Alternatively, you can also check online marketplaces or websites that offer NSP games and DLC, but be sure to only download from trusted sources. You will need a homebrew installer on your Switch