Addon: Undeadcraft Version 3.0.1
Author: Axelpvz
Undeadcraft is a vanilla-style zombie overhaul focused on believable behavior rather than simple high-stat reskins. Zombies receive new animations, smarter targeting, horde mechanics and the ability to spread infection across the world.
Animations and spawning
Humanoid zombies use revised walking, running, attack, spawn and death animations. Newly spawned zombies can crawl out of the ground instead of appearing instantly. Individual spawns are less frequent, but a zombie that detects a player can call reinforcements, and large hordes may occasionally form.

Behavior
- Undead creatures do not attack or damage one another.
- Zombies target living creatures but prioritize players.
- Zombie Piglins have their own detection rules and may ignore a player wearing gold armor.
- Zombies can transform between related variants while retaining health, names and other important data.
Zombification
Creatures killed by zombies may return as an appropriate infected variant. If the add-on has no direct zombie form for a victim, Fleshbound Souls can appear and later develop into another undead creature. Players can also become zombies and receive their own survival mechanics.

Player and world settings
Commands allow administrators to infect or cure selected players. Additional rules control block breaking, infection probability, natural regeneration, food penalties, healing after kills, sunlight damage and whether other mobs can be zombified.
The result is a more coherent zombie-apocalypse experience in which infection, group behavior and world settings matter as much as raw combat strength.
How to install the add-on
Download the .mcaddon or .mcpack file, open it with Minecraft and wait for the import to finish. Then enable the resource and behavior packs in the world settings. If the add-on requires experiments, turn them on before launching the world.