True Survival Zombie Mod

How would you feel waking up in a world over run with the undead? When you walk through this world you will understand what it is like to live in a Zombie Apocalypse. Could you Survive?

The Addon
This addon is simple. Can you survive in a world over run by Zombies and other
people trying to kill you. Lets find out.

The History
A deadly virus has taken over the Minecraft World, Some enities were killed instantly (Creepers, Skeletons etc), Everyone else became the undead... A Zombie.

Different types of Zombies have taken over the Minecraft World, Each type will have it's own characteristics, it may be speed, strength or something else,
Whatever the case if you see a Zombie... Run.
Some people are survivors like you and you will find them wondering around getting attacked or attacking Zombies.
NPC's will automatically attack Zombies just as Zombies will automatically attack NPC'. If a NPC dies from a Zombie attack they will become Zombies themselves.