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Deltabox LibMinecraft mod for 1.21.2

A Kotlin library for all Deltabox mods!

client and servernewest supported 1.21.2Game MechanicsWorldgenLibrary
Latest version
3.0.1
Minecraft
1.20.1 to 1.21.2
Java
Java 21+
Loaders
Fabric, Forge
Licence
MIT
Downloads
1.7M
Updated
7 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Deltabox Lib servers

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

  • 1.21.2
  • Fabric
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Deltabox Lib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.2Fabric, Forge21+declared22 Oct 2024
1.21.1Fabric, Forge21+declared8 Aug 2024
1.20.1Fabric, Forge17+declared12 Jun 2023

Download

From Deltabox Lib’s own host. Nothing is re-hosted here.

3.0.1beta13 Feb 2026

deltaboxlib-fabric-3.0.1+1.21.1.jar · 0.9 MB · for 1.21.1, 1.21.2

Download latest
41758f9c9736…
Older versions10
  • 3.0.029 Jan 20261.21.1, 1.21.20.9 MB6.4k downloadseba8db5c95da…Get
  • 2.2.024 Jun 20251.20.10.8 MB108.4k downloads28eebafdaa64…Get
  • 2.1.128 Apr 20251.20.10.9 MB51.6k downloads96736b3391e2…Get
  • 2.1.024 Apr 20251.20.11.0 MB1.1k downloadsc47c258beca9…Get
  • 2.0.05 Apr 20251.20.11.0 MB5.9k downloads4a99b4213cef…Get
  • 1.1.323 Jan 20251.20.10.7 MB993.8k downloadsc43e2681eb42…Get
  • 1.1.231 Oct 20241.20.10.7 MB14.3k downloadsc2d2ee9bfa0c…Get
  • 1.1.125 Oct 20241.20.10.7 MB581 downloads884eb1bb9011…Get
  • 1.1.018 Sept 20241.20.10.6 MB1.9k downloads7918d9b6f512…Get
  • 1.0.031 Aug 20241.20.10.5 MB595 downloads5dbf3a92091c…Get

Frequently asked

Does Deltabox Lib work on Minecraft 1.21.2?

Yes. 1.21.2 is the newest Minecraft version Deltabox Lib 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 Deltabox Lib support?

Everything the author has declared, from 1.20.1 up to 1.21.2. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Deltabox Lib 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 Deltabox Lib support?

Fabric, Forge. 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 Deltabox Lib?

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 Deltabox Lib under?

MIT, 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 Deltabox Lib?

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 Deltabox Lib 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.

Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftArchitectury APIAn intermediary api aimed to ease developing multiplatform mods.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)Collective🎓 Collective is a shared library with common code for all of Serilum's mods.AttributeFixRemoves arbitrary limits on Minecraft's attribute system.sparkspark is a performance profiler for Minecraft clients, servers and proxies.

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? .