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Relentless Undead

Relentless Undead is a mod that focuses on making zombies harder. This isn't a traditionally AI change but rather mechanic focused. Zombies will climb each other to reach your height and ignore heights entirely to pour off high places to reach you.
by Raiiiden
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145,189 downloads
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Updated Jul 6, 2026
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Mobs Utility & QoL

No known incompatibilities

Relentless Undead is an overhaul for vanilla zombies. It will add multiple mechanics that make it harder and more like the game World War Z.

  • Config what you want on at once, everything can be turned on and off
  • Zombie stacking
  • Reenable zombies swimming
  • Zombies ignore heights
  • Zombies no longer burn in the sun
  • Configure Zombie fall damage percentage (default is 20%)

Report bugs or join for fun in the Zarra Studios discord here: https://discord.gg/PVd6GNpvtW


Plans:

  • Hive Mind (Make it so when zombies are in a group they stick together and look in a similar direction

A mod developed by Zarra Studios

Please report bugs to the discord or github

Code is open-sourced

This code is licensed under ARR

relentlessundead-1.20.1-0.0.3-Alpha.jar
MC Client, 1.20.1, Forge, NeoForge, Server
Release 2026-04-08 Get

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