An NSP file is a Nintendo Switch game package (usually encrypted, meant for digital installs).
“ROMSLAB” is an unofficial ROM/emulation site. Downloading NSPs from such sites is piracy — downloading a game you haven’t purchased.
Before you proceed, here are key things to know:
As of late 2023–2025, many ROM sites change domains frequently to avoid legal action. Searching for “ROMSLAB” may lead to clones or dangerous pages.
NSP files themselves are not executables, but the download process is dangerous:
