How do I install Undead Alliance?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on Modrinth — not every file is mirrored on our own servers.

What Minecraft version does Undead Alliance work with?

The listing gives Minecraft 1.21.1. This is the version stated by the author or source site, not something we verified ourselves.

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Undead Alliance

Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.

by RealNamanOP · on Modrinth

Turn zombies into loyal companions with trust, personality, and smart AI. Recruit, command, and survive together in Minecraft.

⬇ Download on Modrinth

Open in MC Java Mods Get it on Google Play →

🧟 Undead Alliance

A Minecraft Mod that lets you turn zombies into loyal companions instead of enemies.

Survive the apocalypse with your own undead allies, each featuring personality, trust, and evolving behavior systems.

⚙️ FEATURES

🤝 Zombie Recruitment

Sneak + right-click on a zombie to attempt recruitment with a base success chance of 40%, modified by personality traits.

🧠 Trust System

Each zombie has a dynamic trust level (0–100):

0–19 → Hostile (breaks alliance)
20–49 → Suspicious (may retaliate)
50–79 → Friendly (follows & protects)
80–100 → Loyal (best behavior)

🎭 Personalities

Each zombie has unique behavior traits:

Loyal – easier recruitment, more forgiving
Brave – aggressive combat style
Coward – prioritizes survival
Protective – stays close to owner
Lazy – slower movement
Grumpy – harder to recruit

🪖 Helmet Protection

Helmets prevent zombies from burning in sunlight and slightly increase trust.

🍖 Feeding System

Feed rotten flesh to heal zombies and increase trust (only when needed).

🏕️ Smart AI

Allied zombies will:

Seek shade or water when burning
Follow or stay based on commands
Protect the owner from attackers
Request food when low on health

💾 Persistence

All alliance data (trust, personality, ownership, states) is saved using NBT storage.

💬 COMMANDS (/ua)

/ua trust – View trust level
/ua info – Full zombie information
/ua personality – Show personality details
/ua recruitdebug – Force recruit nearby zombie
/ua follow – Make zombie follow you
/ua stay – Make zombie stay in place
/ua debug – Developer debug info
/ua reload – Placeholder command

⚠️ DEVELOPMENT STATUS

This mod is currently UNDER DEVELOPMENT.

You may encounter bugs, unfinished behaviors, or balancing issues. Updates will continue to improve stability, AI behavior, and overall gameplay experience.

🔮 Planned Updates

Improved zombie AI pathfinding
More personality types
Better combat balancing
Bug fixes and performance improvements
Expanded interaction system

🧩 COMPATIBILITY

Minecraft 1.21.1
Fabric Loader
Recommended on both client & server

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft version listed: 1.21.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as undead-alliance-1.0.jar — drop this file into the mods folder
Download size: 1.4 MB
Download link checked 23 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

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All Mods for Java All Minecraft Java mods Java mods for 1.21