Short answers to the questions people ask most about Core Keeper servers on PlayNHost, from joining with the Game ID to players, platforms, worlds, mods, admins, backups and updates. Each answer links to the full guide.
How do my friends join my Core Keeper server?
In Core Keeper: main menu, Join Game, then your Game ID. Copy it from the Steam Game ID row on Overview, or click Join on the server card: once the server has a Steam Game ID, Join copies it. See How to join your Core Keeper server.
Where is my Game ID?
On Overview, in the Steam Game ID row of the server card, after the server's first start: How to find your Core Keeper Game ID.
Does the Game ID change when the server restarts?
No. The panel saves the code the server makes within about 5 minutes of its first start, without anyone opening Overview, and every start uses it from then on: Your Core Keeper Game ID changed after a restart.
Can I choose my own Game ID?
Yes: 15 to 28 letters and numbers, without O, Y, y or x. See How to change the Game ID of your Core Keeper server.
Can I set a join password?
No, there is no join password setting. The Game ID is the key, and guest mode in the game lets visitors look without touching anything: How to keep your Core Keeper server private.
How many players can play on a Core Keeper server?
As many as your Slots. Pugstorm sells Core Keeper as 1 to 8 player online co-op: How many players can play on a Core Keeper server?
Can friends on Epic, GOG, Xbox or PlayStation join?
The Game ID works for the Steam version only. Pugstorm says other PC stores need a direct connection and that there is no crossplay between PC and consoles: Can friends on other platforms join your Core Keeper server?
Do I need to own Core Keeper to run a server?
The server itself needs no copy of the game: it installs the free Core Keeper Dedicated Server from Steam by itself. Every player needs their own copy of Core Keeper to join.
How much RAM does a Core Keeper server use?
An empty server used about 1.3 GB with a new world in PlayNHost's own measurements: How much RAM does a Core Keeper server need?
Can I play in Hard mode?
Yes, switch on Hard mode before the world is created: How to set the world name, seed and Hard mode on your Core Keeper server.
Can I pick other world modes or a season?
No. The panel offers a normal or a hard world only, and no season setting: Core Keeper server settings: every option explained.
Can I have more than one world?
Yes, one per World Index slot: How to run several worlds on your Core Keeper server.
Can I bring my single-player world?
Yes, upload its .world.gzip file: How to upload your own Core Keeper world.
How do I start over with a new world?
Use a new slot, delete one world, or run World Reset, which deletes every world on the server, every World Index slot: How to start a new world on your Core Keeper server.
How do I become admin?
An admin promotes you from the pause menu in the game. If nobody can, our support team helps: How to become admin on your Core Keeper server.
Can I kick or ban players from the panel?
No. Admins kick and ban in the game: How to kick and ban players on your Core Keeper server.
Does the Console take commands?
No. It shows the game's log, and the panel shows no command box for Core Keeper: How to use the Console on your Core Keeper server.
Can I use mods from mod.io or Steam Workshop?
Yes. Upload each mod as its own folder in CoreKeeperServer_Data/StreamingAssets/Mods, and players install the same mods: How to add mods to your Core Keeper server.
Is my server backed up?
If your plan includes backups, an Automatic backup runs every night. You can also back up any time: How to back up and restore your Core Keeper world.
How do I update the server?
Restart it. With Auto Update on, each start installs the newest build: How to update your Core Keeper server.
Does the server restart by itself on a timer?
Not unless you set one up: How to restart your Core Keeper server on a schedule.
Can I keep two completely separate setups?
Yes, with Instances: How to use instances to switch between worlds.
