CaveMC is a semi anarchy survival server that feels like vanilla but tougher. The whole overworld is underground so there is no normal surface at all. It is a huge cave only world with custom world generation made by real Minecraft developers.
Season 2 is a fresh start with a bunch of additions. Survival is brutal and you have to be smart to make it.
There is also a big expansion called the Wasteland Dimension opening on November 8th. It has exclusive gear to fight over. It has massive mega structures with secrets and resources. It also brings its own currency for a player driven economy and trading. There is a new spawn and a custom generated map with special features.
