Mob Spawner Tweaks

Mob Spawner Tweaks

Fully configurable mob spawners for Fabric. Change spawn delay, spawn count, activation range, nearby mob cap, and more to tune farms and server balance.

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848 Downloads
fabricutility
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About this Mod

Configurable Spawners Plus

Control how mob spawners behave without datapacks, command blocks, or messy workarounds.

Configurable Spawners Plus lets you adjust the most important spawner settings in one simple config file, making it ideal for survival servers, custom packs, farm balancing, and admin-controlled gameplay tweaks.

What it does

  • Change minimum and maximum spawn delay
  • Change spawn count per cycle
  • Change spawn range
  • Change required player range
  • Change maximum nearby entities before the spawner pauses

Why use it

  • Speed up or slow down mob farms
  • Balance survival progression
  • Reduce lag from overactive spawners
  • Make exploration structures more dangerous or more forgiving
  • Tune vanilla gameplay without custom command setups

Config options

Config file: config/configurable-spawners-plus.json

  • spawn_delay_min
  • spawn_delay_max
  • spawn_count
  • spawn_range
  • max_nearby_entities
  • required_player_range

Server/client

  • Works in singleplayer and multiplayer
  • Server-side friendly
  • Clients do not need the mod installed when used on a server

Requirements

  • Fabric Loader
  • Fabric API

Available Versions

1.0.0 for MC 1.21.11release
MC 1.21.11fabric
February 15, 2026
1.0.0 for MC 1.21.10release
MC 1.21.10fabric
February 15, 2026
1.0.0 for MC 1.21.9release
MC 1.21.9fabric
February 15, 2026
1.0.0 for MC 1.21.8release
MC 1.21.8fabric
February 15, 2026
1.0.0 for MC 1.21.7release
MC 1.21.7fabric
February 15, 2026

How to Install Mob Spawner Tweaks 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 "Mob Spawner Tweaks". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Mob Spawner Tweaks 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 Mob Spawner Tweaks compatible with fabric?

Mob Spawner Tweaks officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Mob Spawner Tweaks – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Mob Spawner Tweaks 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 Mob Spawner Tweaks with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Optional

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.41.21.31.21.2+2 more