How To Configure Your Core Keeper Server

18. Apr 2026 3 Min. Lesezeit

Whether you want a relaxing casual run, a hardcore challenge, or want to force a specific seasonal event to stay active all year round, configuring your Core Keeper server is incredibly simple! You can easily manage your world settings using our built-in panel tools.

Let us dive into the configuration options so you can fine-tune your underground adventure.

⚠️ Important Warning
Always make sure your server is completely stopped on your MintServers panel before making any configuration changes. If you edit settings while the server is running, the game will overwrite your changes when it shuts down!

Method 1: Game Settings

The absolute easiest way to configure your server is by using the Game Settings right inside your control panel! This prevents any accidental coding errors.

Log into your MintServers panel and click the Stop button to safely shut down your server.

On the left-hand sidebar, navigate to the Game Settings tab.

You can quickly change your Server Name, Password, Max Players, and World Mode right from this screen!

The panel automatically saves these changes as soon as you click outside the text boxes.

Return to the Console tab and click Start.

Starte deinen Core Keeper-ServerUnbegrenzter RAM · Unbegrenzte Slots · Ab $9.99/Monat

Server starten

Method 2: Editing the Configuration File Directly

If you prefer to edit the files manually or need to change advanced variables, you can access the core JSON file.

With your server stopped, navigate to the Files tab on the left-hand sidebar.

Use the interactive file manager to click through the folders and locate your configuration file. Follow this exact path:

                    📁 server (or your main server directory)
                            📁 .config
                                    📁 unity3d
                                            📁 Pugstorm
                                                    📁 Core Keeper
                                                            📁 DedicatedServer
                                                                    📄 ServerConfig.json (Click to edit this file)

Click on the ServerConfig.json file to open the text editor. By default, it will look exactly like this:

📄 ServerConfig.json

{
  "gameId": "",
  "password": "",
  "world": 0,
  "worldName": "Core Keeper Server",
  "worldSeed": "0",
  "hashedWorldSeed": 0,
  "maxNumberPlayers": 100,
  "maxNumberPacketsSentPerFrame": 1,
  "networkSendRate": 20,
  "worldMode": 0,
  "seasonOverride": -1
}

Customizing Your Settings

You can safely change the values next to these variables to adjust your world rules. Here are the most important settings you can tweak:

worldMode
Changes the difficulty of the game. You must change the number to one of the following:

0 = Normal

1 = Hard

2 = Creative

4 = Casual

Note: You cannot change between Creative and non-Creative modes on an already existing world!

worldSeed
Sets the generation seed for your world. If you set this to "0", it will generate a completely random seed. If you change the seed, you will need to generate a new world for it to take effect!

seasonOverride
Allows you to force a specific seasonal holiday event to be active regardless of the real-world date. Leave it as -1 for normal real-world seasonal cycles.

world
Dictates which world save file the server should load. By default, this is set to 0. If you ever want to start a brand new world without deleting your old one, just change this number to 1!

Save and Start

Once you are happy with your new rules, double-check your code to make sure you didn't accidentally delete any quotation marks or commas.

Click the Save Content button at the top right of the file editor.

Navigate back to the Console tab and click Start.

🛠️ Troubleshooting Configuration Issues

Your server will now boot up with your custom configurations applied! If your server seems to have reset its settings or refuses to boot, double-check your JSON file for formatting syntax errors.

Still stuck?

Our team is happy to help. Open a ticket through the live chat button in the bottom-right corner of our website, or join our Discord and open a ticket there.

Join our Discord

Starte deinen eigenen Core Keeper-Server

Bergbau-Abenteuer im Untergrund Experten-Support rund um die Uhr Wechsle jederzeit zwischen 60 Spielen

Meinen Server starten

Ab $9.99/Monat · 24 Stunden Geld-zurück-Garantie