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Split SelfMinecraft mod for 1.21.1

I remember everything; you did this to yourself.

client and servernewest supported release 1.21.1AdventureMobsGame Mechanics
Latest version
1.0.2-UNSAFE
Minecraft
1.21.1
Loader
Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
172.3k
Updated
1 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Split Self servers

One click and Split Self 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

Screenshots

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

Minecraft versions

Every version Split Self declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric21+declared8 Aug 2024

Download

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

Most recently published release

1.0.2-UNSAFErelease5 Oct 2026

split-self-1.0.2-UNSAFE.jar · 47.2 MB · for 1.21.1 · Fabric

Download this release
d0bc44c95712…
Older versions13
  • 1.0.2-SAFE5 Oct 20261.21.177.3 MB5ecaae9775ac…Get
  • 1.0.1-UNSAFE20 Sept 20261.21.156.9 MBf281b17d4fc0…Get
  • 1.0.1-SAFE20 Sept 20261.21.156.9 MBc1b95fc18c73…Get
  • 0.5.02-alpha21 Sept 20251.21.124.1 MB104.1k downloads14820ea4fd8b…Get
  • 0.5.01-alpha12 Sept 20251.21.124.1 MB4.9k downloads3bd4c76f5a83…Get
  • 0.5.0-alpha12 Sept 20251.21.124.1 MB342 downloads4e75c366dcd8…Get
  • 0.4.1-alpha25 Aug 20251.21.163.3 MB15.2k downloadse00643d1c8f6…Get
  • 0.4.0-alpha21 Aug 20251.21.163.8 MB7.9k downloadsa95dc8ade4b1…Get
  • 0.3.0-alpha13 Aug 20251.21.163.4 MB19.3k downloadsfbc6b9305121…Get
  • 0.2.0-alpha9 Aug 20251.21.162.5 MB7.0k downloadsc422676ef7dc…Get
  • 0.1.01-alpha21 Jul 20251.21.153.0 MB1.3k downloads299f8f12134a…Get
  • 0.1.0-alpha10 Jul 20251.21.140.1 MB136 downloads52c4ea606bef…Get
  • 0.0.2-alpha29 Jun 20251.21.111.9 MB506 downloads625f35fcaa91…Get

Dependencies

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

Frequently asked

Does Split Self work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Split Self 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 Split Self 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 Split Self support?

Fabric. 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 Split Self?

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 Split Self 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 Split Self?

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 Split Self 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.

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