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Decaying Spawners

by ivangeevo

Decaying Spawners makes mob spawners wear out over time, so a spawner that once ran forever stops working after enough use.

FabricNeoForgeServer-side onlyCreative Commons Attribution 4.01.21.1

What it does

Vanilla mob spawners keep producing mobs indefinitely once a farm is built. This mod gives each spawner a limited lifespan, so a spawner that has produced enough mobs over a long enough period is retired for good. Decay thresholds can be adjusted in the config. Fabric API is the dependency to install alongside it on Fabric. The mod is server-side only, so players join without installing it, and it is released under Creative Commons Attribution 4.0 on Fabric and NeoForge for 1.21.1.

Key features

  1. Limited spawner lifespan

    Each spawner is tracked by how many mobs it has produced and how long it has been active.

  2. Permanent burnout

    A spawner that reaches its limit stops producing mobs and does not recover.

  3. Configurable decay

    The thresholds that trigger decay can be changed to suit a server's pace of play.

Compatibility

Latest build for each game version and loader.

1.21.11.11.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

Kinda Limited Spawners is a NeoForge mod for client and server, open source under the GNU General Public License v3.0 or later, for 1.21.1. Decaying Spawners covers both Fabric and NeoForge for 1.21.1 on the server only and is not open source.

ModLoadersGame versionsEnvironmentUpdated
Decaying SpawnersFabric and NeoForge1.21.1Server-side only2026-09-12
Kinda Limited SpawnersNeoForge1.21.1Client and server2026-03-10

Questions

Does Decaying Spawners need Fabric API?

Yes. Fabric API is listed as a required dependency. It requires Fabric API.

Do players need to install Decaying Spawners?

No. Server owners install it, and players connect with no copy of their own.

In the catalog

Decaying Spawners is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Mobs mods11,058Fabric modsMods for 1.21.132,366

More from ivangeevo

All projects
Mobs Always Drop1.19.2 – 1.21.6BTWR: Core1.20.1 – 1.21.1BTWR: Shared Library1.21.1Sturdy Trees1.19.2 – 1.21.1Tough Environment1.20.1 – 1.21.1Self-Sustainable1.21.1

Similar mods

[EMF] Entity Model Features1.18.2 – 26.3L_Ender's Cataclysm1.19.2 – 1.21.5Guard Villagers1.16.5 – 26.3Touhou Little Maid1.16.5 – 1.21.1Creeper Overhaul1.18.2 – 1.21.1Zombie Awareness1.12.1 – 1.21.1

What the author says

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.
ivangeevo, on the Modrinth page

Official listing

Owner
ivangeevo
Published
2026-06-12
Updated on Modrinth
2026-09-12
Facts verified
2026-10-15

Tags

Game mechanicsMobs
Open on ModrinthCompare