Question 1

What is tModLoader?

Accepted Answer

tModLoader is the official modding framework for Terraria, available free on Steam, which loads mods into the game and lets you run a dedicated modded server.

Question 2

Which port does it use and how do I get in?

Accepted Answer

The server runs on host port 7778, mapped from Terraria's default 7777. Connect from the tModLoader client by entering your server's address on 7778.

Question 3

How do I add mods?

Accepted Answer

Mods come from the Steam Workshop. You add the Workshop mod IDs to the mod settings in the compose file (the TMOD_ variables for downloading and enabling mods), then restart the server, which fetches and enables them. Mods aren't added live — it's edit the IDs and restart.

Question 4

Do all players need the same mods?

Accepted Answer

Yes. tModLoader requires that clients match the server's mod set, so everyone connecting needs the same mods installed. Mod mismatch is the most common reason a player can't join.

Question 5

Why run a dedicated server instead of hosting in-game?

Accepted Answer

Hosting from the game client ties the world to that player's machine being online — when they stop playing, the world goes offline. A dedicated server keeps the world persistent and available whenever anyone wants to play, independent of any single player.

🎮 Setup tModLoader — Modded Terraria Server

📦 Resources & Setup Scripts

Quick Install:

Tutorial Steps

1 Download the Script

2 Make it Executable

3 Run the Installer

4 Add Workshop Mods and Connect

Ports Used

Overview

Why Use It

When You Need It

Who Should Use It

Real Use Cases

Main Features

How to Use After Installation

Security Best Practices

Ports and Firewall Notes

Backup and Maintenance

Common Mistakes

Troubleshooting

Alternatives

When Not to Use It

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Frequently Asked Questions