Gravesend

Minecraft on Legendary Difficulty

The mod is currently in early development, Gravesend features a new bleeding & injury mechanic, infections, new worldgen & biomes, temperature mechanics, seasons, and new trees, more information listed in latest changelog

The mod will allow the player to go through human history style progression trees which will help them learn to navigate the world, if something is a threat in real life, treat it like one in game.

This mod does not hold your hand, if you're careless, you will die. 

[Note, Mod is in Alpha Development, Many Features Are Unfinished, Space Features & Firearms not yet intended for survival use, mod is not ready to be played on in survival mode]