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NuclearismMinecraft mod for 1.21.1

A Mod for Minecraft Neoforge 1.21.1 that adds brand new ores machinery and nuclear tech! Similar To HBM Nuclear Tech Mod but for 1.21.1 Neoforge

client and servernewest supported release 1.21.1TechnologyUtilityGame Mechanics
Latest version
1.7.1
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
1.6k
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Nuclearism servers

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

  • 1.21.1
  • NeoForge
  • 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 Nuclearism declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

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

Most recently published release

1.7.1beta31 Aug 2026

nuclearism-1.7.1Beta-neoforge-1.21.1.jar · 3.6 MB · for 1.21.1 · NeoForge

Download this release
48da4128d422…
Older versions19
  • 1.731 Aug 20261.21.13.5 MB11d00b26922b…Get
  • 1.622 Aug 20261.21.13.2 MBf5c0f05af626…Get
  • 1.5.126 Jun 20261.21.13.1 MB289 downloads5e6384e3af2b…Get
  • 1.524 Jun 20261.21.13.1 MB35 downloads0904033cb04c…Get
  • 1.4.722 May 20261.21.13.1 MB431 downloads2a3e68982a94…Get
  • 1.4.621 Apr 20261.21.12.8 MB213 downloads9754abc1752e…Get
  • 1.4.520 Apr 20261.21.12.7 MB23 downloadsd44fb83dd0c0…Get
  • 1.4.413 Apr 20261.21.12.7 MB53 downloads3d2be3d3266a…Get
  • 1.4.312 Apr 20261.21.12.7 MB13 downloads5e1906a23e34…Get
  • 1.4.212 Apr 20261.21.12.7 MB12 downloads9b4d6ca09af0…Get
  • 1.4.112 Apr 20261.21.12.7 MB12 downloads47b14e0cd8da…Get
  • 1.412 Apr 20261.21.12.7 MB15 downloadsed751d300e12…Get
  • 1.3.225 Mar 20261.21.12.5 MB38 downloads363215aff222…Get
  • 1.3.125 Mar 20261.21.12.5 MB9 downloads81e27a3252f3…Get
  • 1.325 Mar 20261.21.12.4 MB12 downloads392d2b6e1731…Get
  • 1.2.221 Mar 20261.21.12.3 MB21 downloads9b40fd81dcd3…Get
  • 1.2.117 Feb 20261.21.11.5 MB51 downloads9defe742822b…Get
  • 1.113 Dec 20251.21.11.5 MB9 downloads77a2a611af1d…Get
  • 1.011 Dec 20251.21.11.4 MB13 downloads59fad573a8d6…Get

Dependencies

What Nuclearismdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

GeckolibRequired. A 3D animation library for entities, blocks, items, armor, and more!

Frequently asked

Does Nuclearism work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Nuclearism declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Do I need to install Nuclearism 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 Nuclearism 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 Nuclearism?

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.

What does Nuclearism need to run?

It declares Geckolib as required, so that has to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Nuclearism 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 Nuclearism?

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 Nuclearism 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.

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from Modrinth, where the author last updated it on 31 Aug 2026. 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? .