Welcome to GRID0

WIP Notice: Official hub for GRID0 network routing and client setup. GRID0 is a virtual overlay network bridging all three Switch ecosystems into the same LAN lobby:

• Emulators (PC, Steam Deck)
• CFW (Atmosphère, Modded Switch 1)
• OFW (Stock Hardware, Unmodded Switch 1 and Switch 2)

---

Services

Ecosystem	Platform / Environment	Core Tool	Connection Method
Emulator	PC / Steam Deck (Ryujinx, Astris, Eden, etc.)	emu-GRID0+	Desktop client binds directly to emulator network adapter.
CFW	Modded Switch (Atmosphère)	cfw-GRID0+	On-device background sysmodule. No host PC required.
OFW	Unmodded Stock Switch or Switch 2	ofw-GRID0	PC companion application bridges Switch Wi-Fi traffic.

Why the +? emu-GRID0+ and cfw-GRID0+ are the names for the future versions that will connect to simulated Nintendo servers, with lobbies, matchmaking, and in-game features. That part is still being built. Everything in this guide just gets you onto the GRID0 network itself.

---

Setup Guides

1. Emulator Setup [emu-GRID0+] (WORK IN PROGRESS)

If you play on an emulator you just need the native ZeroTier client.

Windows

1. Download and install ZeroTier One.
2. Right-click the tray icon, select Join New Network, and enter: 8bd5124fd68185ec

macOS

1. Download and install ZeroTier One.
2. Click the menu bar icon, select Join New Network, and enter: 8bd5124fd68185ec

[image: the macOS menu bar showing the ZeroTier icon and the join network option]

Linux

1. Install ZeroTier One: curl -s https://install.zerotier.com | sudo bash
2. Join the GRID0 network: sudo zerotier-cli join 8bd5124fd68185ec

[image: a terminal showing the install and join commands with their output]

Emulator settings (all platforms)

1. Open your emulator settings (e.g. Ryujinx):
   • Go to Settings → Network.
   • Set the multiplayer Mode to Disabled.
   • Enable Guest Internet Access/LAN Mode
   • Remember to click Apply and/or OK.

[image: Ryujinx settings on the Network tab, with the multiplayer mode and guest internet access options highlighted]

---

2. Modded Switch (CFW) [cfw-GRID0+]

Runs directly on the console as a background sysmodule. No PC or phone required while playing.

1. Download the latest release from the sys-GRID0 repository.
2. Extract the archive to the root of your SD card.

[image: the SD card root with the extracted sys-GRID0 folders in place]

3. Reboot into Atmosphère and verify connection status using the Tesla (or Ultrahand) overlay menu.

[image: the Tesla overlay open on the Switch showing the sys-GRID0 connection status]

---

3. Stock Switch and Switch 2 Setup (OFW) [ofw-GRID0]

Stock consoles cannot execute background custom modules. grid0-relay runs on a PC connected to the same home network, capturing and translating LAN-Play packets automatically.

1. Download and open GRID0Relay from the GRID0-relay repository.
2. GRID0Relay will automatically install ZeroTier One and npcap.
   For certainty:

   Make sure they are installed (it should say ZeroTier One and npcap are installed in the GRID0Relay settings).
   
3. GRID0Relay will automatically launch ZeroTier and connect to the GRID0 network.
   For certainty:

   Windows: Click the Up arrow at the bottom right of your screen and right-click the ZeroTier tray icon, make sure the status is OK in 8bd5124fd68185ec GRID0.
   
4. GRID0Relay will automatically select the correct ZeroTier adapter.
   For certainty:

   In GRID0Relay, open Settings, the relay will automatically connect to the presumed ZeroTier connection, but make sure the ZeroTier connection selected looks like the correct one (should be named something similar to ZeroTier).
   

Automatic Mode (Easier, Windows and Hotspot Capable Only):

5. Go back to the Play section of GRID0Relay, make sure Automatic (DHCP) is selected, click Set up PC hotspot if it isn't already set up and click Start relay.

[image: the relay Play tab with Automatic (DHCP) selected and Start relay visible]

6. Connect your Switch or Switch 2 to the PC Hotspot normally. If your Switch or Switch 2 was already connected, simply turn on and off either Sleep Mode or Airplane Mode (both work).

Manual Mode:

5. Go back to the Play section of GRID0Relay, make sure Manual IP settings is selected, click Start relay and notice the Switch IP settings it provides you.
6. On your Switch or Switch 2, enter Network Settings, Change Settings on the same network your PC is connected to, and enter the provided IP settings. (Primary DNS can be set to 8.8.8.8 and Secondary DNS can be left blank).

[image: the Switch internet settings screen with the manual IP, subnet, gateway, and DNS fields filled in] 7. Make sure to save and connect to the network.

Project Owners

• Mustafa
• name
• Doughston