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Project Red CoreMinecraft mod for 1.21.1

A collection of mods that aim to vastly improved Redstone circuitry with wiring, logic gates, integrated circuits, and more. Heavily inspired by Red Power by Eloraam.

client and servernewest supported release 1.21.1TechnologyUtilityEquipmentGame Mechanics
Latest version
4.23.0
Minecraft
1.19.2 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
MIT
Downloads
71.5k
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Project Red Core servers

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

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Project Red Core declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.4Forge, NeoForge17+declared7 Dec 2023
1.20.1Forge, NeoForge17+declared12 Jun 2023
1.19.2Forge, NeoForge17+declared5 Aug 2022

Download

From Project Red Core’s own host. Nothing is re-hosted here.

Most recently published release

4.23.0release25 Jul 2026

ProjectRed-1.21.1-4.23.0-core.jar · 0.7 MB · for 1.21.1 · NeoForge

Download this release
4880605241bf…
Older versions18
  • 4.23.0-beta+815 Jul 20261.21.10.7 MB604 downloads0c8247213c5e…Get
  • 4.22.07 Apr 20261.21.10.7 MB9.2k downloadsbb24e2ef88bd…Get
  • 4.22.0-beta+393 Apr 20261.21.10.7 MB288 downloads1e01b84bd898…Get
  • 4.22.0-beta+3731 Mar 20261.21.10.7 MB545 downloads7afa24068507…Get
  • 4.22.0-beta+335 Dec 20251.21.10.7 MB3.9k downloadse1827043a55a…Get
  • 4.22.0-beta+292 Dec 20251.21.10.7 MB187 downloads20a4abcb674f…Get
  • 4.22.0-beta+2430 Nov 20251.21.10.7 MB125 downloads62ba4c91d6c7…Get
  • 4.22.0-beta+2129 Nov 20251.21.10.7 MB94 downloads64025c87f891…Get
  • 4.22.0-beta+1411 Nov 20251.21.10.7 MB936 downloadsb84b9fd6ed6d…Get
  • 4.22.0-alpha+1114 Aug 20251.21.10.7 MB2.3k downloads0f952f3c9b6b…Get
  • 4.22.0-beta+710 Aug 20251.20.40.8 MB82 downloads69c24eb68020…Get
  • 4.21.09 Aug 20251.20.10.8 MB203 downloads62a473831234…Choose file on publisher ↗
  • 4.21.0-beta+119 Feb 20251.20.40.8 MB125 downloads010877af624f…Get
  • 4.21.0-alpha+826 Jan 20251.20.40.8 MB117 downloads31b89ff267ed…Get
  • 4.19.0-beta+3326 Jan 20251.19.20.8 MB920 downloadsa12d4613cf9e…Choose file on publisher ↗
  • 4.20.1-beta+420 Jan 20251.20.10.8 MB3.8k downloadse66718317455…Choose file on publisher ↗
  • 4.20.031 Dec 20241.20.10.8 MB1.3k downloads114269c8e226…Choose file on publisher ↗
  • 4.20.0-beta+1627 Dec 20241.20.10.8 MB196 downloads4adcfa3df06d…Choose file on publisher ↗

Frequently asked

Does Project Red Core work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Project Red Core 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 Project Red Core support?

Everything the author has declared, from 1.19.2 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Project Red Core 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 Project Red Core support?

Forge, 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 Project Red Core?

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 licence is Project Red Core 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 Project Red Core?

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 Project Red Core 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.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!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 25 Jul 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? .