mod

Halcyon | Data & EssenceMinecraft mod for 1.21.1

A story of reconciliation, told through a magitech mod about exploration and factory-building.

newest supported release 1.21.1Technology Magic World Gen Technology Automation

Latest version: Halcyon-v0.4.3+aria-of-the-moon.jar
Minecraft: 1.21 to 1.21.1
Java: Java 21+
Loader: NeoForge
Licence: not stated
Downloads: 272.1k
Updated: 3 mo ago
Available on: CurseForge

Screenshots

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

Minecraft versions

Every version Halcyon | Data & Essence declares support for, newest first, with the Java runtime that version needs.

Other mods

Minecraft	Through	Java	Evidence	Released
1.21.1	NeoForge	21+	declared	8 Aug 2024
1.21	NeoForge	21+	declared	13 Jun 2024

Download

From Halcyon | Data & Essence’s own host. Nothing is re-hosted here.

Browse 39 indexed releases

Most recently published release

Halcyon-v0.4.3+aria-of-the-moon.jarbeta22 Aug 2026

Halcyon-v0.4.3+aria-of-the-moon.jar · 19.6 MB · for 1.21.1 · NeoForge

Download this release

1c53b3b23ef5…

Older versions24

Halcyon-v0.4.2+aria-of-the-moon.jar11 Aug 20261.21.119.6 MB14915ea3eda9…Get
Halcyon-v0.4.1+aria-of-the-moon.jar4 Aug 20261.21.119.1 MB74 downloads4ec568422656…Get
Halcyon-v0.3.6+tides-of-phenua.jar8 May 20261.21.114.4 MB13.7k downloadsd317697cbb65…Get
Halcyon-v0.3.5+tides-of-phenua.jar7 May 20261.21.114.4 MB92 downloadsadb5bc696dcc…Get
Halcyon-v0.3.4+tides-of-phenua.jar23 Apr 20261.21.110.5 MB510f812a3404…Get
Halcyon-v0.3.3+tides-of-phenua.jar22 Apr 20261.21.110.5 MB68 downloads29a03b5fb20f…Get
Halcyon-v0.3.2+tides-of-phenua.jar11 Mar 20261.21.110.4 MB6.9k downloadsec6533bea7e2…Get
Halcyon-v0.3.1+tides-of-phenua.jar11 Mar 20261.21.110.4 MB79b1c47932a9…Get
Halcyon-v0.2.13+song-of-the-factory.jar14 Feb 20261.21.110.4 MB105 downloads8120349e09bb…Get
Halcyon-v0.2.12+song-of-the-factory.jar29 Jan 20261.21.110.3 MB53 downloads19c89da3f5fa…Get
Halcyon-v0.2.11+song-of-the-factory.jar28 Jan 20261.21.110.3 MB57 downloads3d98dc750e89…Get
datanessence-1.0.0-alpha-song_of_the_factory10.jar10 Dec 20251.21.110.1 MB2.6k downloadsee5dbfe52d48…Get
datanessence-1.0.0-alpha-song_of_the_factory9.jar17 Oct 20251.21.19.8 MB9.7k downloads080ef1162ed8…Get
datanessence-1.0.0-alpha-song_of_the_factory8.jar19 Sept 20251.21.19.7 MB399 downloadsd7d738b7bbd4…Get
datanessence-1.0.0-alpha-song_of_the_factory7.jar17 Sept 20251.21.1, 1.219.7 MB1 download6886ac549104…Get
datanessence-1.0.0-alpha-song_of_the_factory6.jar31 Jul 20251.21.1, 1.219.7 MB48 downloads266bb5cc8e96…Get
datanessence-1.0.0-alpha-song_of_the_factory5.jar22 Jul 20251.21.1, 1.219.2 MB2.9k downloads9a15a7bcc2a7…Get
datanessence-1.0.0-alpha-song_of_the_factory4.jar17 Jul 20251.21.1, 1.219.1 MB58 downloads9f21ae77eb95…Get
datanessence-1.0.0-alpha-song_of_the_factory3.jar17 Jul 20251.21.1, 1.219.1 MB18 downloads19e23c0603ea…Get
datanessence-1.0.0-alpha-song_of_the_factory2.jar12 Jul 20251.21.1, 1.219.1 MB64 downloads969034ee4104…Get
datanessence-1.0.0-alpha-song_of_the_factory1.jar11 Jul 20251.21.1, 1.219.1 MB51 downloads59c2f3a38d72…Get
datanessence-1.0.0-alpha-earlygame17.jar25 Jun 20251.21.1, 1.215.5 MB71 downloads8796b8db1d66…Get
datanessence-1.0.0-alpha-earlygame16.jar13 Jun 20251.21.1, 1.215.4 MB352 downloadsd5108baa0713…Get
datanessence-1.0.0-alpha-earlygame15.jar10 Jun 20251.21.1, 1.215.4 MB61 downloads18e5c7c4b10e…Get

Frequently asked

Does Halcyon | Data & Essence work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Halcyon | Data & Essence 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 Halcyon | Data & Essence support?

Everything the author has declared, from 1.21 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Halcyon | Data & Essence support?

NeoForge. 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 Halcyon | Data & Essence?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install Halcyon | Data & Essence?

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 Halcyon | Data & Essence safely?

Start with the author's page on CurseForge, 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.

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Is this information wrong or missing something? .