30 world slots
The server keeps worlds in slots 0 to 29 (-world) and plays one at a time; the others are left exactly as they were. On Flux, the Worlds tab lists them, switches between them, downloads and deletes them.
Modes
| Mode | What it is |
|---|---|
| Normal | Balanced monsters for a fair challenge. |
| Hard | Tougher monsters, greater rewards. |
| Casual | Gentler monsters for a relaxed game. |
| Creative | An empty world without limits, to build freely. |
The mode is chosen when a world is created (-worldmode). A world cannot be switched between Creative and the other modes afterwards.
Seeds
The seed (-worldseed) decides the map and the dungeons. The same seed as a world in your own game gives the same map; none gives a random one. Like the mode, it only matters when the world is made.
Seasonal events
By default the server follows the calendar: Halloween, Christmas, Easter, Valentine, the Anniversary, Cherry Blossom and Lunar New Year come at their time of year. A server can force one, or none (-season).
Content bundles
A world made before an update can miss what came with it: extra dungeons, the Abiotic Factor crossover, biome statues, guaranteed oases. -activateallcontent adds them, permanently. A world made on version 1.3 has all thirteen already.
Custom world generation
The server has no screen for world generation parameters. Pugstorm's way: create the world in your own game with the parameters you want, copy its file from the save's worldgenparams folder into the server's, named after the slot, and start a new world in that slot.
Frequently asked questions
Can I change a Core Keeper server's world mode?
Not for an existing world: the mode is chosen when the world is made. Make a new world in a free slot with the mode you want.
How do I play a specific seed on a Core Keeper server?
Set the seed when creating a new world (on Flux, in the Worlds tab's New World form). The same seed gives the same map as in your own game.