LDN Multiplayer Setup Guide for Windows

Play Nintendo Switch games with friends using Ryujinx.

Ryujinx supports LDN multiplayer, which allows users to connect with friends via LAN, Wi-Fi, or the internet through local wireless emulation. This allows you to play Nintendo Switch games such as Mario Kart 8 Deluxe, Super Smash Bros. Ultimate, and others without using Nintendo Switch Online.

This guide explains how to enable and use LDN multiplayer on Windows with the Ryujinx version downloaded from this website.

What You Will Need

Before you start:

Ryujinx LDN Build downloaded from this website.
Installed prod.keys and Nintendo Switch firmware.
Game ROMs in.XCI,.NSP, or.NRO formats
Your friends share the same game version, update, and region.
A working internet connection (online) or LAN/VPN configuration
A compatible game that allows local wireless play

LDN works by simulating local wireless multiplayer between networked computers. All players must use the same LDN-supported build with identical game files.

Step-by-Step Setup Guide for Windows

Step 1: Download the LDN build.

Use the link below to download the most recent Ryujinx build that includes LDN multiplayer support:

Download Ryujinx LDN Build for Windows

After downloading, extract the folder and launch Ryujinx.exe.

Step 2: Enable LDN Services

Open Ryujinx.exe to launch it.
Click on Multiplayer > Open the LDN Room Browser.
If prompted, accept the LDN terms and proceed.
You should now see the LDN lobby interface with available rooms.

Step 3: Host a Multiplayer Room

To create your own multiplayer room:

Go to Multiplayer > Host Room.
Enter the room name and optional password.
Set the maximum players and select your region.
Click Start.

Your room is now active. Share the room name and password (if applicable) with your friends so they can participate.

Step 4: Join a Multiplayer Room.

Connect to a hosted room:

Open the LDN Room Browser.
Search or find your friend’s room by name.
Click on the room and select Join Room.
Enter the password if required.

To prevent desynchronization, all players must use the same game version, language, region, and mod settings.

Step 5: Start the Game and Connect

Once connected to the LDN room:

Launch your multiplayer-compatible game.
Navigate to the game’s local wireless mode (not online mode).
Wait until the game detects nearby players.
Join or host an in-game multiplayer session.

Compatible Games include

Mario Kart 8 Deluxe
Super Smash Bros. Ultimate
Pokémon Sword and Shield
Animal Crossing: New Horizons
Splatoon 2
Luigi’s Mansion 3
New Super Mario Bros. U Deluxe

Troubleshooting Common Issues

Issue	Solution
Players are not visible in-game.	Ensure that all players use the same build, game version, and mods.
The game crashes when joining.	Confirm that the firmware and prod.keys are correctly installed.
High lag or delay.	Use wired internet, shut down background apps, and host from a nearby region.
The room is not showing.	Check firewall settings, restart the emulator, or change network modes.

Additional Tips

Always select Local Wireless in the game; never use online modes.
VPNs, such as Radmin VPN, ZeroTier, or Hamachi, can simulate LAN connections.
For a stable connection, players must use the same Ryujinx LDN version.
Avoid using trimmed ROMs or modded builds unless all players have the same configurations.

You are Ready to Play

Once everything is in place, you and your friends can participate in seamless multiplayer sessions without the need for a console or Nintendo Online subscription.

LDN offers a powerful and free way to play true multiplayer Nintendo Switch games from your Windows PC.