CaveMC is a semi anarchy survival server that feels like vanilla but turned up. The whole overworld is underground so there is no surface at all. It is all caves with biomes resources and structures all around.
The survival is brutal and it is meant for players who like to struggle and figure things out. Season 2 is live and it is a fresh start with a bunch of additions.
There is also a big expansion called the Wasteland Dimension. It brings new gear to fight over huge mega structures to explore and mysteries to chase. It has its own currency and a player driven economy with trading. There is a new spawn too and the dimension map is custom generated with special features.
