: It is highly recommended to use backups only of games you own legally. Installing unofficial software or pirated content can lead to a console ban from Nintendo's online services.
To play this on a Nintendo Switch, you need a console running like Atmosphere. Valis IV [010070F01901C000][v0][JP].nsp.rar
: Copy the file to your microSD card. Open your chosen installer (e.g., Goldleaf) on the Switch, browse to the file, and select Install . Note: Files larger than 4GB require a FAT32-formatted card to be split or installed via USB. : It is highly recommended to use backups
: Right-click the .rar file and select "Extract" to get the .nsp file. : Copy the file to your microSD card
You can also play this file on a PC using Nintendo Switch emulators like Ryujinx. from the .rar archive.
: Once the progress bar reaches 100%, the game will appear on your Switch home menu. PC Emulation Guide