This server is called Experimental Hardcore and it is a hardcore anarchy world with weird events that keep changing how you play. The world gets random constraints and different experiments over time so the game does not stay the same.
At the start the world border was super small and every day it grows bigger. When someone went to the End a destruction timer started and after that nobody could go to the End anymore. More events like that keep happening and they can limit or unlock new stuff you can do.
The server is hardcore so if you die you are done and death is forever. But there is a way to be revived if other players help you. When you die you become a ghost stuck near your own player head. You float there in a special spectator mode and cannot go through the ground. If someone finds a special revival location and has your head and enough resources they can bring you back to life.
As the border gets bigger you can find old builds and strange structures from past players. Inside there can be loot danger and small bits of story. The way you mess with these places or items can change things for you or the whole world.
The server is anarchy but with rules against hacking and exploits. Griefing killing and stealing are allowed. Crystal pvp and anchor pvp are turned off. Java Minecraft version 1 is used.
It feels like a world where your choices actually matter and the server keeps shifting around you.

