Improved Spiders

Improved Spiders

Adds 4 new types of spiders that can spawn as well as a spider queen boss that spawns in new spider den structures and many new items.

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2.9K Downloads
datapackfabricforgeneoforgequiltadventuremobsworldgen
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Screenshots

Spiders Hanging From the Roof of a Cave
New Spider Types
New Items
Spider Den in an Old Growth Taiga
Spider Queen on a Spider Den
New Advancements

About this Mod

This datapack/mod adds 4 new types of spiders that can spawn as well as a spider queen boss that spawns in new spider den structures and many new items.

You can get all the custom spider eggs in Creative mode by typing: /function improved_spiders:give_spawn_eggs

You can get all the custom items in Creative mode by typing: /function improved_spiders:give_items

You can locate a Spider Den in Creative mode by typing: /locate structure improved_spiders:spider_den

Upsidedown Spiders

Spiders and Cave Spiders that climb on walls and have a block above them will visually cling to the the roof
A spider and a Cave Spider Hanging on the Roof of a Cave

New Spider Types

4 new Spider Types have a chance to replace both normal Spiders and Cave Spiders, 2 of them having unique item drops

Spider Types
  • Webber Spider: Throws spider Web at the player that spawns a cobweb where they hit
  • Venomous Spider: Throws Spider Venom at the player that creates a poison cloud where they hit
  • Egg Carrier Spider: Carry a Spider Egg on their back that spawns many baby spiders when they die
  • Healer Spider: Heals all nearby spiders every few seconds
  • Warrior Spider: Leaps towards the player with force from far away and has buffed stats

New Types of Spiders and Cave Spiders

Spider Den

Spider Dens spawn in all Forest-like biomes, they have some cobwebs, spiders and between 3 to 8 inactive Healing spider spawners around them as well as a giant spider egg at the top. Spider Dens can be easily found by using a Spider Den Explorer map which drops from Warrior Spider or has a chance of spawning in an Abandoned Mineshaft chest

Spider Den Biomes
  • Forest
  • Birch Forest
  • Old Growth Birch Forest
  • Dark Oak Forest
  • Pale Garden
  • Old Growth Pine Taiga
  • Old Growth Spruce Taiga

Spider Den in an Old Growth Taiga

Spider Queen Boss

After Finding a Spider Den and approaching the giant Spider Egg at the top, a Spider Queen will spawn as well as its Healthbar and start attacking the player with different attacks:

  • Throws an egg that spawns 4 spiders
  • Leaps in the air and smashes the ground dealing damage to all players nearby

Additionally the healing spider spawners will activate spawning waves of them until destroyed
After reaching half health it will spawn 2 Spider Warriors and increase in powder, doing more Egg throw as well as Smash attacks, even making any remaining spawners be quicker
Spider Queens Cannot be damaged by projectiles shot from more than 32 blocks away
Upon being defeated it will drop 2 new items

Spider Queen on top of Spider Den

Items

Some of the new Spider Types drop new items with unique properties

New Items
  • Spider Web: Drops from Webber Spiders and can be thrown, uppon hitting something it spawns a cobweb
  • Spider Venom: Drops from Venomous Spiders and can be thrown, uppon hitting something it creates a poison cloud
  • Healing Spider Gland: Drops from Healing Spiders and can used to restore a few hearts and cure poison and nausea
  • Spider Egg: Drops from Queen Spiders and can be thrown, uppon hitting something it spawns 5 Spiders that will attack the nearest Hostile Mob to them when they spawn
  • Arachnoid Crown: Drops from Queen Spiders and can be worn, when equipped any mob that attacks the player will be set on a cobweb
  • Spider Den Explorer Map: Drops from Warrior Spiders and can help the player locate a Spider Den

New Items

Spider Den Explorer Map

Available Versions

1.21.5 - 1.21.10release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric, forge, neoforge, quilt
October 2, 2025
1.21.5 - 1.21.10release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10datapack
October 2, 2025
1.21.5 - 1.21.8release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric, forge, neoforge, quilt
July 27, 2025
1.21.5 - 1.21.8release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8datapack
July 27, 2025
1.21.5 - 1.21.8release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric, forge, neoforge, quilt
July 21, 2025

How to Install Improved Spiders on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.10).

3

Install Mod

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

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.10, 1.21.9, 1.21.8 (+3 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Improved Spiders server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.

Is Improved Spiders compatible with datapack and fabric and forge and neoforge and quilt?

Improved Spiders officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.10, 1.21.9, 1.21.8. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Improved Spiders – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Improved Spiders 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 Improved Spiders with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
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1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.101.21.91.21.81.21.71.21.61.21.5