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Eclipse Core ClientMinecraft mod for 1.21.1

This project's core functionality is to enable double battle gimmicks in cobblemon clients, it servers other purposes as well to enable 4v1 raids on servers that create their own mods. Additional functionality will eventually be added.

client onlynewest supported 1.21.1Game MechanicsLibrary
Latest version
2.9.9-1.7
Minecraft
1.21.1
Loader
Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
3.7k
Updated
2 mo ago
Available on
Modrinth
Space NodePartner

Host Eclipse Core Client servers

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

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

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric21+declared8 Aug 2024

Download

From Eclipse Core Client’s own host. Nothing is re-hosted here.

2.9.9-1.7release10 Jun 2026

eclipse-core-client-2.9.9-1.7.jar · 4.8 MB · for 1.21.1

Download latest
fd49deffc69f
Older versions7
  • 2.7.05 Apr 20261.21.14.3 MB1.3k downloads8b37bf6fbe7aGet
  • 2.0.131 Jan 20261.21.15.1 MB919 downloads519ea1843f9fGet
  • 2.0.025 Jan 20261.21.15.1 MB244 downloadsa2342acf713bGet
  • 1.9.510 Jan 20261.21.14.6 MB966 downloads22fb1b09fa17Get
  • 1.8.310 Jan 20261.21.10.1 MB38 downloads75e25d0bbf25Get
  • 1.6.58 Jan 20261.21.10.0 MB43 downloadscc3fe0bf2708Get
  • 1.6.26 Jan 20261.21.10.0 MB36 downloads071397981e7cGet

Frequently asked

Does Eclipse Core Client work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Eclipse Core Client 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 Eclipse Core Client on the client or the server?

The client only. There is nothing to install on the server, so it works on any server you can already join.

Which loader does Eclipse Core Client need?

Fabric. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Eclipse Core Client?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

What licence is Eclipse Core Client 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 Eclipse Core Client?

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 Eclipse Core Client safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Last checked 6 d 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? .