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Iron LaddersMinecraft mod for 1.21.4

Adds new ladders that have a higher climbing speed

client and servernewest supported 1.21.4UtilityGame MechanicsDecorationTransportation
Latest version
3.0.02
Minecraft
1.17.1 to 1.21.4
Java
Java 21+
Loaders
NeoForge, Forge, Fabric
Licence
LGPL-3.0-only
Downloads
35.3k
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Iron Ladders servers

One click and Iron Ladders is installed with the right loader, on hardware built for it.

  • 1.21.4
  • NeoForge
  • Forge
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • 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 Iron Ladders declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.4NeoForge, Forge, Fabric21+declared3 Dec 2024
1.21.1Fabric, NeoForge, Forge21+declared8 Aug 2024
1.21Fabric, NeoForge, Forge21+declared13 Jun 2024
1.20.6NeoForge, Forge, Fabric21+declared29 Apr 2024
1.20.4Fabric, NeoForge, Forge17+declared7 Dec 2023
1.20.3Forge, NeoForge, Fabric17+declared4 Dec 2023
1.20.2Forge, Fabric, NeoForge17+declared20 Sept 2023
1.20.1NeoForge, Forge, Fabric17+declared12 Jun 2023
1.19.4Fabric, NeoForge, Forge17+declared14 Mar 2023
1.19.3Forge, NeoForge, Fabric17+declared7 Dec 2022
1.19.2Forge, NeoForge, Fabric17+declared5 Aug 2022
1.18.2Forge, NeoForge, Fabric17+declared28 Feb 2022
1.17.1Forge, NeoForge, Fabric16+declared6 Jul 2021

Download

From Iron Ladders’s own host. Nothing is re-hosted here.

3.0.02release23 Jun 2026

ironladders-forge-1.21.1-3.0.02.jar · 0.7 MB · for 1.21.1

Download latest
8d8ecbb30b54…
Older versions19
  • 3.0.0110 Feb 20261.21.10.7 MB1.9k downloadsb155aae29662…Get
  • 3.0.05 Feb 20261.20.11.7 MB737 downloads161651951f25…Get
  • 2.7.0316 Jan 20251.20.10.4 MB256 downloadsd4ea479f4e6c…Get
  • 2.5.1221 Sept 20241.21.1, 1.210.4 MB588 downloads2ed1c5fbe1bf…Get
  • 2.5.1016 Aug 20241.20.10.4 MB114 downloadsfed84cd97f83…Get
  • 2.5.0213 Aug 20241.20.10.8 MB122 downloads7a62da83a5b4…Get
  • 2.5.018 Aug 20241.20.10.4 MB65 downloads365768e9ad9d…Get
  • 2.2.316 Jun 20241.210.3 MB121 downloads29174152e349…Get
  • 2.1.529 Jun 20241.19.20.3 MB741 downloads26cd78aca779…Get
  • 2.1.5013 Mar 20241.19.40.3 MB143 downloads011dde1c6f3c…Get
  • 2.1.256 Mar 20241.20.40.2 MB72 downloads49c63401eeea…Get
  • 2.1.122 Mar 20241.20.40.2 MB56 downloadsaf4b1443a810…Get
  • 2.1.12 Mar 20241.19.4, 1.19.3, 1.19.20.2 MB70 downloads08420111f9ae…Get
  • 2.0.02 Mar 20241.20.10.2 MB41 downloads5d43583ce84c…Get
  • 1.0.129 Feb 20241.17.176 KB38 downloadsee71af6068f6…Get
  • 1.17.1-1.0.0-fabric25 Feb 20241.17.173 KB31 downloads32e2c582b710…Get
  • 1.18.2-1.0.0-fabric25 Feb 20241.18.273 KB34 downloadse67f10dfa2e2…Get
  • 1.19.2-1.0.1-fabric25 Feb 20241.19.273 KB52 downloadseb9bf3c2ab7b…Get
  • 1.20.1-1.0.0-fabric25 Feb 20241.20.173 KB49 downloads143d2e9fb6fa…Get

Frequently asked

Does Iron Ladders work on Minecraft 1.21.4?

Yes. 1.21.4 is the newest Minecraft version Iron Ladders 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 Iron Ladders support?

Everything the author has declared, from 1.17.1 up to 1.21.4. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Iron Ladders on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Iron Ladders support?

NeoForge, Forge, Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Iron Ladders?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Iron Ladders under?

LGPL-3.0-only, 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 Iron Ladders?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Iron Ladders 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. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

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

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Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .