Terraria Server Setup

Complete guide to setting up a Terraria server on CoreSynth.

Overview

Getting Started

Step 1 — Create your service

1. Log in to CoreSynth Dashboard 
2. Navigate to Game Servers
3. Select Terraria
4. Choose location and hardware (recommended: 1-2 GB RAM, 1 CPU core)
5. Complete your order

Note: For 1-16 players, we recommend at least 1 GB RAM and 2 GB disk.

Step 2 — Server Configuration

In the control panel, edit serverconfig.txt:

# Server Name
ServerName=My Terraria Server

# Port (default: 7777)
Port=7777

# Max Players
MaxPlayers=16

# World Size (1=Small, 2=Medium, 3=Large)
WorldSize=1

# Password
Password=

# Admin password (use /kick, /ban, etc.)
AdminPassword=your_admin_password

# World File Name
WorldFileName=world.wld

# Auto-create world if not exists
AutoCreate=true

# World seed (optional)
WorldSeed=

# Difficulty (0=Normal, 1=Expert, 2=Master, 3=Journey)
Difficulty=0

# CreativeMode (for servers with Journey mode)
CreativeMode=0

Step 3 — World Size Options

Step 4 — Server Start

1. In the control panel, click Start
2. Server will automatically create world (if AutoCreate=true)
3. Monitor console for completion

Connecting to Server

Method 1 — Steam

1. Launch Terraria via Steam
2. Select Multiplayer
3. Click Join via IP
4. Enter terraria.coresynth.io

Method 2 — Direct Connect

1. In Terraria menu, select Multiplayer → Join
2. Enter terraria.coresynth.io
3. If password is set, enter it

Difficulty Modes

Installing Mods (tModLoader)

tModLoader Server Setup

1. In the control panel, select Terraria with tModLoader
2. After installation, edit configuration

Installing Mods

1. Download mod (.tmod file) from Steam Workshop 
2. In the control panel, upload file to Mods/ folder
3. Restart server
4. Activate mods via server console

Recommended Mods

Troubleshooting

Server Not Visible in List

Cause: Incorrect port setting or firewall.

Solution:

1. Check that port 7777 is open in Security
2. Verify Port=7777 in serverconfig.txt

World Won’t Generate

Cause: Missing permissions or bad seed.

Solution:

# Ensure AutoCreate=true
AutoCreate=true
WorldSeed=random

Connection Refused

Cause: Server did not start correctly.

Solution:

1. Check console for errors
2. Restart server
3. Verify TerrariaServer.exe exists

Next Steps

• Subdomains — Custom domain setup
• Game Servers — All supported games

Need help? Open a support ticket  or ask Alex.