Sakummo3-(usa)-nswtch-[base]-nsp-ziperto.rar Now

This is the file format (Nintendo Submission Package) used to install digital games on a Switch.

This appears to be a filename for a , likely a digital dump, specifically in the NSP format (Nintendo Submission Package) intended for use with custom firmware or emulators. SAKUMMO3-(USA)-NSwTcH-[BASE]-NSP-Ziperto.rar

Making digital backups of legally owned physical cartridges. This is the file format (Nintendo Submission Package)