Open your server and choose Settings. Save settings for the next start or choose Save & restart now if you have permission to restart. The server uses a MaximusHost-managed connection IP and port; these values are not editable here.

Settings you can change

| Setting | What it does | When it applies |<br>| --- | --- | --- |<br>| World name | Sets the name players see when joining. | Next server start. |<br>| World mode | Selects Normal, Hard, Creative, or Casual mode. | Choose it before creating a new world. Changing between Creative and a non-Creative mode on an existing world is not supported. |<br>| World seed | Sets the seed used for a newly generated world. Leave it blank for a random seed. | New worlds only; it does not regenerate an existing world. |<br>| Maximum players | Sets the server’s player limit. Core Keeper defaults to 8. | Next start. Higher limits may need more resources. |<br>| Season override | Uses a selected season or leaves the game to use its current calendar season. | Next start. |<br>| Platform restriction | Allows all supported PC storefronts or limits direct connections to Steam, Epic, Microsoft Store, or GOG. | Next start. A restriction disables cross-play between PC stores. |<br>| Direct-connect password | Replaces the password used for direct address connections. Leave the field blank to keep the current password. | Next start. |

MaximusHost manages the server’s IP address and UDP port. Do not change these in Files or in a game configuration file. The direct address and port appear in the owner’s connection details.

New worlds and existing worlds

The seed is only used while creating a new world. A mode change should also be treated as a new-world choice. Before making any change that might alter an existing world, create a full-server backup.

Core Keeper supports permanent content activation options in the dedicated-server package. MaximusHost does not expose those options as an editable control because the game documents some content activation as irreversible. If you want to enable additional world content, wait for a verified world-safe workflow or contact support before making a manual change.

Connection details

The owner can reveal the direct address, direct-connect password, copyable direct join code, and Steam Game ID in Settings. Shared users who have access to edit properties cannot reveal those credentials in the dashboard. The direct join code uses the public port assigned to the server and contains its password, so share it privately. The Steam Game ID is only for Steam players.

For joining help, see Join and Invite Friends. For pricing, see Resources and Credit Pricing.