
MobRandomizer
A Minecraft mod that effectively randomizes mobs by remapping mob spawns.
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About this Mod
Mob Randomizer Mod
A Minecraft mod that effectively randomizes mobs by remapping mob spawns.
Features
By randomly assigning every mob spawn another random mob, each mob will have another mob replace it for all its instances.
For example all piglins might get replaced by llamas.
Covers all types of mob spawns (natural, summoned, stuctures, ...).
Details
The randomized mappings are created when the world is loaded. They are based on the world seed, so using the same seed will yield the same results.
Mobs that cannot spawn naturally (giant, illusioner, ...) are excluded.
Configuration
You can choose mobs to be excluded from the randomization process.
When using the mod for the first time, a mob_randomizer.toml will be created in .minecraft/config.
There you can specify mob ids you do not want to be randomized. Example :
blacklist = ["ender_dragon", "wither", "giant", "illusioner", "zombie_horse"]
/!\ Warning : Randomizing the Ender Dragon may cause issues, it is recommended to leave it blacklisted.
Available Versions
How to Install MobRandomizer on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (26.2).
Install Mod
Open the mod browser in the dashboard and search for "MobRandomizer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.2, 26.1.2, 26.1.1 (+12 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
MobRandomizer server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.2). You can switch loaders with one click in the panel.
Is MobRandomizer compatible with fabric?
MobRandomizer officially supports fabric for Minecraft 26.2, 26.1.2, 26.1.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with MobRandomizer – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MobRandomizer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install MobRandomizer with just one click on your server.