lan-play-win64.exe is the 64-bit Windows executable client for the project created by spacemeowx2 . It is a command-line tool that acts as a "man-in-the-middle" between your Nintendo Switch and a public or private LAN Play server.

This article provides a deep dive into what lan-play-win64.exe is, how it works, how to set it up on Windows 64-bit systems, and how to use it to play supported titles like Mario Kart 8 Deluxe and Splatoon 2 with players worldwide. What is lan-play-win64.exe?

This is a nuanced question. The tool itself is . It is simply a network tunneling software, similar to Hamachi or ZeroTier. However, the use case determines legality:

To connect to a public or private server, you will need the server IP address. Run the command