Navigate to -> "SD card" and find your file. Select the file and choose "Install" . Option C: Tinfoil (USB or Network) Open Tinfoil on your Switch.

Ensure you have downloaded the .rar file containing the game. Note that the official release for this logic puzzle game was September 30, 2022 .

Use software like 7-Zip or WinRAR to extract the contents of the .rar file. You should be left with a single .nsp file.