A common safety practice is to test the file first in an emulator like Ryujinx on a PC before installing it on an actual Switch. Installation Context
The .rar is a container; the internal .nsp is the standard digital format used for Nintendo Switch games and emulators. Sea of Stars (NSP)(DEMO).rar
A report for the file indicates it is a compressed archive containing a Nintendo Submission Package (NSP) for the demo of the turn-based RPG Sea of Stars . File Details Game: Sea of Stars (Demo version). A common safety practice is to test the
Files obtained from unofficial sources ("the high seas") carry inherent risks of malware or "brick code" that can disable a modified console, though this is rare for well-known titles. Sea of Stars (NSP)(DEMO).rar