Setting up an online server for Terraria allows you to play with friends and others around the world in a persistent environment where everyone can contribute, explore, and battle together. Here’s how you can set up your own Terraria server, using either the dedicated server software provided by the developers or via third-party tools like TShock for a more feature-rich server.

Using Terraria’s Dedicated Server Software

1. Obtain the Server Software:
   • When you install Terraria, the dedicated server software is also included in the game’s installation directory. Alternatively, you can download it directly from the Terraria website or via Steam under the Tools section.
2. Set Up the Server:
   • Run the Server Software: Open the dedicated server program.
   • Select World: Choose an existing world or create a new one specifically for the server.
   • Set Server Port: The default port is 7777. Make sure this port is forwarded on your router if you’re hosting from home. This step is crucial for allowing external connections to your server.
   • Set a Server Password (optional): Adding a password can help control who can join your server.
   • Start the Server: Once configured, start the server. It will run in a command prompt or terminal window.
3. Connect to Your Server:
   • Local Network: If players are connecting over the same local network, they can join using the local IP address of the host machine.
   • Over the Internet: Players will need your public IP address to connect. You can find this by searching «What is my IP address» in any search engine. Remember, giving out your public IP can be risky; ensure your network is secure.

Using TShock (For a Modded Server)

TShock provides Terraria servers with additional functionality like advanced user permissions, in-game commands, and more.

1. Download TShock:
   • Download the latest version of TShock from their official website or GitHub page.
2. Installation:
   • Extract the downloaded files into a directory where you want to run your server from.
   • Run the TerrariaServer.exe file within the TShock folder.
3. Configuration:
   • Similar to the standard Terraria server setup, configure your world settings, port, and any server rules.
   • TShock also allows for plugin support and advanced configurations through its extensive config file.
4. Running the Server:
   • Once configured, start the server using the TShock executable.
   • Configure port forwarding on your router if you haven’t already to allow external connections.

Important Tips

• Security: Always ensure your network is secure when running a game server, especially if opening ports or providing your IP address to the public.
• Regular Backups: Make regular backups of your server files, especially the world files, to prevent data loss.
• Updates: Keep both your Terraria game and server software (or TShock) updated to ensure compatibility and security.

By setting up your own Terraria server, you create a dedicated space for your multiplayer adventures, offering a customizable and controlled environment for you and your friends to enjoy indefinitely.