
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.
Screenshots






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
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

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 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

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


Available Versions
How to Install Improved Spiders on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set datapack Loader
In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.10).
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
Minecraft Versions
1.21.10, 1.21.9, 1.21.8 (+3 more)
Server-side
✓ RequiredRecommended 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.
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Rent Modded Server
Install Improved Spiders with just one click on your server.