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NeoBlock - The new OneBlockMinecraft mod for 1.21.4

New OneBlock, but an ultimate version with customizations.

client and servernewest supported 1.21.4UtilityGame MechanicsWorldgen
Latest version
0.8.0-Beta
Minecraft
1.20.1 to 1.21.4
Java
Java 21+
Loaders
NeoForge, Forge
Licence
LicenseRef-All-Rights-Reserved
Downloads
7.1k
Updated
9 mo ago
Available on
Modrinth
Space NodeOur hosting

Host NeoBlock - The new OneBlock servers

One click and NeoBlock - The new OneBlock is installed with the right loader, on hardware built for it.

  • 1.21.4
  • NeoForge
  • Forge
  • 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 NeoBlock - The new OneBlock declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.4NeoForge, Forge21+declared3 Dec 2024
1.21.3Forge, NeoForge21+declared23 Oct 2024
1.21.2NeoForge, Forge21+declared22 Oct 2024
1.21.1NeoForge, Forge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From NeoBlock - The new OneBlock’s own host. Nothing is re-hosted here.

0.8.0-Betabeta5 Jan 2026

neoblock-neoforge-1.21.4-0.8.0-Beta.jar · 0.8 MB · for 1.21.4

Download latest
6692b764e1c4…
Older versions15
  • 0.7.0-Beta7 Sept 20251.21.40.8 MB479 downloadsc7b29e7511b3…Get
  • 1.20.1-0.6.2-Beta21 Aug 20251.20.10.2 MB129 downloads7324eba21b35…Get
  • 1.20.1-0.6.1-Beta18 Aug 20251.20.10.2 MB94 downloads0c00a12e4d1b…Get
  • 1.21.1-0.6.1-Beta16 Aug 20251.21.10.2 MB104 downloadsc11dcf3607da…Get
  • 1.21.1-0.6.0-Beta10 Aug 20251.21.4, 1.21.3, 1.21.2, 1.21.10.2 MB54 downloads032e678b803c…Get
  • 1.21.1-0.5.0-Beta10 Jun 20251.21.10.2 MB255 downloadscd71de559b88…Get
  • 1.20.1-0.4.0-Beta10 Apr 20251.20.10.1 MB579 downloadsb4892fe59574…Get
  • 1.21.1-0.4.0-Beta10 Apr 20251.21.4, 1.21.3, 1.21.2, 1.21.10.1 MB207 downloads3d34e220d3f5…Get
  • 1.20.1-0.3.2-Beta30 Mar 20251.20.195 KB92 downloads24bf548152c0…Get
  • 1.21.1-0.3.2-Beta30 Mar 20251.21.4, 1.21.3, 1.21.2, 1.21.193 KB53 downloads2aaffa6305d2…Get
  • 1.21.1-0.3.1-Beta28 Mar 20251.21.4, 1.21.3, 1.21.2, 1.21.190 KB48 downloads8871808dbe51…Get
  • 1.21.1-0.3.0-Beta26 Mar 20251.21.4, 1.21.3, 1.21.2, 1.21.191 KB41 downloads5e707d966206…Get
  • 1.21.1-0.2.1-Beta25 Mar 20251.21.4, 1.21.3, 1.21.2, 1.21.178 KB40 downloadse7135a17aace…Get
  • 1.21.1-0.2.0-Beta23 Mar 20251.21.4, 1.21.3, 1.21.2, 1.21.177 KB41 downloads911c9b17721d…Get
  • 1.21.1-0.1.0-Alpha17 Mar 20251.21.168 KB44 downloads0325e74556df…Get

Frequently asked

Does NeoBlock - The new OneBlock work on Minecraft 1.21.4?

Yes. 1.21.4 is the newest Minecraft version NeoBlock - The new OneBlock 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 NeoBlock - The new OneBlock support?

Everything the author has declared, from 1.20.1 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 NeoBlock - The new OneBlock 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 NeoBlock - The new OneBlock support?

NeoForge, 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 NeoBlock - The new OneBlock?

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 NeoBlock - The new OneBlock 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 NeoBlock - The new OneBlock?

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 NeoBlock - The new OneBlock 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.

Armor HiderHide or adjust the transparency of armor, glint, and offhand items - with full multiplayer sync. No dependencies required.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.

Details from Modrinth, where the author last updated it on 5 Jan 2026. 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? .