
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.
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_minspawn_delay_maxspawn_countspawn_rangemax_nearby_entitiesrequired_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
How to Install Mob Spawner Tweaks 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 (1.21.11).
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
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+9 more)
Server-side
~ OptionalRecommended 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.
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Rent Modded Server
Install Mob Spawner Tweaks with just one click on your server.