I found MCBloodlines and it is a brand new hardcore SMP that is invite only. It is built to make people play in groups and slowly build up real civilizations over time.
The cool part is only players who are already invited can invite new people. It makes the community grow in a more natural way and it helps keep random trolls out.
There are also secret tweaks and mechanics that you are not given guides for. Players have to figure stuff out on their own which makes paying attention actually matter.
It also has a clan and family system so you do not just spawn alone in a hardcore world. You join because someone invited you so you start as part of a group and a story that keeps going.
Hardcore Bloodlines Civilization SMP
GG.MINEWIND.NET New Server IPMCB Civilization Hardcore SMP
This server is a hardcore SMP that tries to feel like those big Minecraft civilization experiments. It is called MCB and it is brand new and invite only. You do not just spawn alone on a hardcore world. You get invited into a clan and a family so you are part of a story right away.
Only players who are already on the server can invite new people. This makes the population grow kind of like real life and keeps out trolls. The community is meant to stay active and actually care about each other.
There are secret tweaks and mechanics added to the game to keep it fresh. There are no guides at all. Players are supposed to figure everything out on their own. If you pay attention and stay dedicated you get rewarded.
Most clans seem to be recruiting more members right now. If the instant join codes do not work you can still try to join by talking to current members and asking for their personal invite codes. There is also a wiki page that explains how joining and invitation codes work.GG.MINEWIND.NET New Server IP