I found this server called 99b99t and it is a straight up anarchy world. There are no rules and no limits so you can do whatever you want and nobody will stop you.
The server runs all day and night so it is always on. The difficulty is set to hard so mobs and players can destroy you if you are not careful.
You can join with Java from version 1.12.2 up to 1.21.11 so lots of people can connect. The world is brand new so spawn and the rest of the map are still getting ruined and built at the same time.
It is basically pure chaos and survival where you try to make a base or join others or just fight everyone. If you want a place with no rules and real anarchy this is that kind of server.
99b99t Hardcore Chaos Anarchy
GG.MINEWIND.NET New Server IPNo Rules No Bans Hardcore Anarchy PvP
This server is called NoRulesNoBans and it is exactly what it sounds like. It is an anarchy pvp survival world where players can do pretty much anything.
You can grief bases and steal items and kill other players. There are no real rules so you have to be ready for chaos all the time. If you build something you better be ready to defend it or move a lot.
The server runs on version 1.21.11 and the difficulty is set to hard. That means mobs hurt a lot and the world itself is scary even before you see other players.
If you want a Minecraft world with no protection and no safety where every item feels like it actually matters this server fits that style.GG.MINEWIND.NET New Server IPNoLimit Anarchy 1.21 – No Rules
This is a server called No Limit and it is a full vanilla anarchy world. There are no rules and there is no anti cheat so you are totally on your own.
The server is always on the newest version and it has been running for about 8 years. It is online 24 7 so you can join any time.
Anyone can join and they already had over 260000 different players visit at least once. Chat reports are turned off so the chat feels more free.
The server supports distant horizons simple voice chat and vivecraft so you can even play in VR if you want. There is also a live chat system that lets people see in game chat from discord.
If you want a place with no rules and pure chaos this server is exactly like that.GG.MINEWIND.NET New Server IP