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Core Keeper: updates, settings and interface

Game updates, plugin versions and improvements to our interface with a traceable history.

Recorded, available and installed are different states. Your actual installation status and suitable updates are shown in the server panel.

Developer announcement Published

Download the Core Keeper Open Alpha Now!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

Announcing our Core Keeper Open Alpha!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

Core Keeper Creature Compendium Part #1

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

Flora, Fauna, FISHING, and more!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

How YOUR Closed Alpha Feedback Has Improved Core Keeper

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

Core Keeper is coming to EGX London!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

New Music, Marvellous Mould and MORE!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

Sign Up for the Core Keeper Closed Alpha!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Developer announcement Published

Balance, Boss Scanners and Skills

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source
Game update Published

Our First Core Keeper Developer Update!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Effects on plugins

No independent plugin compatibility test is documented for this announcement. Check the affected plugins in the update center before changing game versions.

Open original source
Developer announcement Published

Introducing Core Keeper – a Mining Sandbox Adventure!

Announcement from the official source. The source describes the changes; your server installation status is shown separately in the update center.

Open original source

What the interface looks like

The image shows the interface on its capture date; earlier versions may differ.

Excerpt of the current interface with sample values. Values and prerequisites illustrate the controls; available tools depend on server software, plugins and permissions.
Excerpt of the current interface with sample values. Values and prerequisites illustrate the controls; available tools depend on server software, plugins and permissions. · Captured on 2026-10-08

What the settings do

These values come from our guided editors. Defaults are the editor starting values; they do not show the contents of a customer server.

World index

Number of the world to load. Default: 0. Whole numbers from 0 only. A different index selects a different save.

Setting
WORLD_INDEX
Default
0
Range / options
0 – …
When it takes effect
Takes effect after saving and restarting the server.
Server name

Server display name, 3–100 characters. The world index selects the save. Restart after saving.

Setting
WORLD_NAME
Default
Core Keeper Server
When it takes effect
Takes effect after saving and restarting the server.
World seed

Seed for a newly generated world. This field accepts whole numbers from 0; 0 generates a random seed. An existing world keeps its seed.

Setting
WORLD_SEED
Default
0
Range / options
0 – …
When it takes effect
Takes effect after saving and restarting the server.
Maximum players

Maximum number of players connected at the same time. Set by the server and read-only here.

Setting
MAX_PLAYERS
Default
100
Range / options
1 – 100
When it takes effect
Takes effect after saving and restarting the server.
Hard world mode

Off: normal mode. On: hard mode for a newly generated world. An existing world keeps its mode.

Setting
WORLD_MODE
Default
0
When it takes effect
Takes effect after saving and restarting the server.
Automatic updates on startup

Enables automatic game updates when the server starts. Find the switch under Updates.

Setting
AUTO_UPDATE
Default
1
When it takes effect
Takes effect after saving and restarting the server.