Fatstynremstrd--usa--nswtch--base--nsp-ziperto.... Official

: The file format. .NSP (Nintendo Submission Package) is the standard format used for digital titles from the Nintendo eShop.

When combined, the keyword is a request or reference to a pirated, base version NSP file of a specific game, region USA, for the Nintendo Switch, available via Ziperto-like sites. FATSTYNREMSTRD--USA--NSwTcH--BASE--NSP-Ziperto....

The text you provided appears to be a standardized release tag for Fate/stay night REMASTERED : The file format