To stay within legal bounds, you are supposed to "dump" the game files from a Switch cartridge you actually own. Downloading "ROMs" or "NSPs" from third-party sites is considered piracy. Gameplay Experience on PC
The only legitimate way to play Super Mario Party on a PC is through . This isn't a simple "click and install" process; it requires software that mimics the Nintendo Switch hardware. Super Mario Party PC Download Free
You need a fairly powerful PC with a dedicated graphics card to get smooth performance. To stay within legal bounds, you are supposed
Because of that, any site promising a direct "free download" for PC is likely a scam or a source of malware. If you're looking to play it on your computer, The "Free Download" Warning This isn't a simple "click and install" process;
Super Mario Party relies heavily on Joy-Con motion controls (like rowing a boat or flipping a pan). To play on PC, you usually need to sync actual Nintendo Joy-Cons via Bluetooth, as a keyboard or standard Xbox controller won't work for many of the mini-games. Final Verdict
Programs like Yuzu or Ryujinx are the industry standards.
If you do get it running via an emulator, the experience is actually quite impressive: