This is a survival anarchy server that has no rules and no map resets. Anything players do is allowed like griefing building or cheating. Nobody will protect you here so you have to take care of yourself.
The world started on 26 April 2021. That makes it over four years old and it has already been visited by thousands of players at least once. The map keeps all the history and ruins from all those players so it feels really old and dangerous.
The main version is 1.21 and it also supports versions from 1.17 up to 1.21.10. You can just join with any of those and jump into the chaos.
If you want a relaxed friendly server this is probably not it. But if you want a place where everything goes and you can do whatever you want this server is made for that.

