World
- World Name, World Index and World Seed: a new index or seed starts a new world.
- World Mode: Normal, Hard, Creative or Casual.
- Season: follow the date, turn seasons off, or pick one such as Halloween or Christmas.
Players
- Password and Max Players, 8 by default.
- Allow Only Platform: all platforms, or only Steam, Epic, Microsoft or GOG.
Bans
The Players page shows the server's bans. Ban or unban a player while the server is stopped; it applies at the next start, and from the Discord bot too.
Questions
How do I make a Core Keeper server hard mode?
Set World Mode to Hard and start a new world. The mode belongs to the world.