FUSER's official multiplayer servers were shut down in December 2022, so the single-player campaign and freestyle modes will be the primary functional components.
The .rar file is a container. Use a tool like or WinRAR to extract the contents. FUSER-NSP-ROMSLAB.rar
Use a tool like DBI or Tinfoil on your Switch and a companion app like NS-USBloader on your PC to transfer the file directly over USB. This avoids the 4GB file size limit of FAT32 SD cards. FUSER's official multiplayer servers were shut down in
You should find one or more .nsp files inside, which are the actual game or update packages. 2. Choose an Installation Method FUSER-NSP-ROMSLAB.rar
To "prepare" or install this content, follow these general steps for a modded Nintendo Switch: 1. Extract the Archive