Debuff Zones

Debuff Zones

Adds a softer alternative/add-on to the vanilla worldborder system.

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80 Downloads
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Screenshots

effects
so much configuration
damage
difficulty scaling

About this Mod

Debuff Zones

Adds a softer alternative/add-on to the vanilla worldborder system.

Usage

Edit the configuration file in config/debuffzones.json. Each element in the zones array represents one zone object, which has the following syntax:

{
  "dimension": "minecraft:overworld", // The dimension where this zone applies
  "center": [
    0.0, // Center X
    0.0  // Center Z
  ],
  "distance_type": "SQUARE", // can be SQUARE or CIRCLE
  "radius": 1000.0, // Radius (either Euclidean distance or distance on either axis, with the type CIRCLE and SQUARE respectively)
  "effects": [ // List of "effect instance" objects 
    {
      "identifier": "minecraft:slowness", // Effect ID
      "potency": 1, // Effect level (starting from 0)
      "time": 10, // The duration of the effect (generally doesn't matter, it's applied each tick but some laggier servers may benefit from a higher value here)
      "ambient": true, // Makes swirls *less* visible (like beacons)
      "particles": false, // Makes swirls *not* visible
      "show_icon": true // Makes the icon show in the top right
    }
  ],
  "damage": 0.0, // How much damage should happen each tick
  "difficulty": 0.0 // This is added on to the clamped regional difficulty (see https://minecraft.wiki/w/Difficulty#Regional_difficulty)
  // NOTE: Regional clamped difficulty is a value from 0.0 - 1.0, so values above this won't change anything.
  "regeneration_bypass": false // If having Regeneration should disable this zone's effects
}

Available Versions

1.1.0release
MC 1.21.11fabric
February 8, 2026
1.0.0release
MC 1.21.11fabric
February 7, 2026

How to Install Debuff Zones on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

3

Install Mod

Open the mod browser in the dashboard and search for "Debuff Zones". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Debuff Zones 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 (1.21.11). You can switch loaders with one click in the panel.

Is Debuff Zones compatible with fabric?

Debuff Zones officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Debuff Zones – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Debuff Zones 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.

Rent Modded Server

Install Debuff Zones with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
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NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.11