The demo on the official Nintendo eShop is approximately 1 GB . If your .rar or extracted .nsp is significantly smaller (e.g., only a few MBs), it may be incomplete or malicious. Safety & Legitimacy
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
The .rar is a container; the internal .nsp is the standard digital format used for Nintendo Switch games and emulators. The demo on the official Nintendo eShop is
You can use tools like NSC_Builder (Nintendo Switch Cleaner and Builder) to verify the file's hash and digital signature against known legitimate copies. Installation Context A report for the file indicates
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
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).