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data pack

Improved SpidersMinecraft data pack for 1.21.10

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.

server onlynewest supported release 1.21.10UtilityAdventureMobsEquipment
Latest version
2.2+mod
Works with
Quilt, NeoForge, Forge, Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
2.9k
Updated
13 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Improved Spiders servers

Deploy a server with Improved Spiders already added to the world, on hardware built for it.

  • 1.21.10
  • Data pack
  • Quilt
  • NeoForge
  • Forge
  • One click install
  • Version matched
  • Automatic backups
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Improved Spiders declares support for, newest first, with the Java runtime that version needs.

Other data packs
MinecraftThroughJavaEvidenceReleased
1.21.10Data pack, Quilt, NeoForge, Forge, Fabric21+declared7 Oct 2025
1.21.9Fabric, Quilt, NeoForge, Forge, Data pack21+declared30 Sept 2025
1.21.8Data pack, Fabric, Forge, NeoForge, Quilt21+declared17 Jul 2025
1.21.7Data pack, Quilt, NeoForge, Forge, Fabric21+declared30 Jun 2025
1.21.6NeoForge, Quilt, Forge, Fabric, Data pack21+declared17 Jun 2025
1.21.5Quilt, Fabric, Data pack, Forge, NeoForge21+declared25 Mar 2025

Download

From Improved Spiders’s own host. Nothing is re-hosted here.

For Minecraft 1.21.10

Choose the loader you use before downloading.

  • Fabric, Forge, NeoForge, Quilt

    2.2+mod · 2 Oct 2025

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗
  • Loader not listed

    2.2 · 2 Oct 2025 · Improved Spiders 2.1 [1.21.5-1.21.9].zip

    Get release

Most recently published release

2.2+modrelease2 Oct 2025

improved-spiders-2.2.jar · 0.7 MB · for 1.21.10, 1.21.9, 1.21.8, 1.21.7, 1.21.6 +1 more · Fabric, Forge, NeoForge, Quilt

Choose file on publisher ↗
d9aea936654b…
Older versions6
  • 2.22 Oct 20251.21.10, 1.21.9, 1.21.8, 1.21.7, 1.21.6 +1 more0.3 MB268 downloadsc196a0162794…Get
  • 2.1+mod27 Jul 20251.21.8, 1.21.7, 1.21.6, 1.21.50.7 MB782 downloadsf64a3d885968…Choose file on publisher ↗
  • 2.127 Jul 20251.21.8, 1.21.7, 1.21.6, 1.21.50.3 MB130 downloads59b664be26ba…Get
  • 2.0+mod21 Jul 20251.21.8, 1.21.7, 1.21.6, 1.21.50.7 MB120 downloadsfcf95986301f…Choose file on publisher ↗
  • 2.021 Jul 20251.21.8, 1.21.7, 1.21.6, 1.21.50.3 MB63 downloads7afcff4960fe…Get
  • 1.025 Mar 20251.21.8, 1.21.7, 1.21.6, 1.21.50.3 MB191 downloads78c9f35b6ee8…Get

Frequently asked

Does Improved Spiders work on Minecraft 1.21.10?

Yes. 1.21.10 is the newest Minecraft version Improved Spiders declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Improved Spiders support?

Everything the author has declared, from 1.21.5 up to 1.21.10. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Improved Spiders on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

What licence is Improved Spiders under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Improved Spiders?

Data packs install per world: put the downloaded file in that world's datapacks folder and run /reload, or add it when creating the world. No loader is involved. On a server, the world folder lives next to the server jar.

Where do I download Improved Spiders safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Details from Modrinth, where the author last updated it on 2 Oct 2025. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .