Decaying Spawners

Mob spawners that decay after a while. Highly configurable.

by ivangeevoGame mechanics Mobs

FabricNeoForge

Loaders: FabricNeoForge
Downloads on Modrinth: 809
Followers on Modrinth: 0
versions: 4
Updated: September 12, 2026Sep 12
Published: in 2026

Add to favorites Follow updatesFollow

At a glance

Runs on Fabric and NeoForge

For Minecraft 1.21.1

Server only — players don't need to install it

Latest version — 1.1 from September 12, 2026

Requires Fabric API

License CC-BY-4.0 — free

Where it's needed

In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.21.1

Spawners in vanilla Minecraft are infinite mob factories — set up a farm once and it runs forever. Decaying Spawners changes that. Each spawner has a limited lifespan: once it has spawned enough mobs (or been active long enough), it burns out and stops working permanently.

Configuration

Configuration is loaded from:

config/btwr/decaying_spawners/decaying_spawners.json

Option	Default	Description
`maxMobSpawnCount`	`64`	How many mobs a spawner can spawn before decaying. Set to `-1` to disable.
`maxSpawnerTicks`	`-1`	How many active ticks a spawner can run before decaying. Set to `-1` to disable.
`excludedSpawners`	`[]`	A list of entity IDs whose spawners will never decay.

Example config:

{
  "maxMobSpawnCount": 20,
  "maxSpawnerTicks": -1,
  "excludedSpawners": [
    "minecraft:blaze",
    "minecraft:silverfish"
  ]
}

Changes to the config file take effect the next time you load a world

🙏 Acknowledgment:
This mod ports features from the original Better Than Wolves, created by FlowerChild and currently maintained by the CE Team. Learn more about the original mod here.

FAQ

How to install Decaying Spawners?

Install Fabric for your Minecraft version, download Decaying Spawners for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Decaying Spawners support?

Decaying Spawners has builds for Minecraft 1.21.1.

Is Decaying Spawners needed on the server?

Server only — players don't need to install it

License and source

Creative Commons Attribution 4.0 Internationalfree to share with credit to the author and the license

Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders