mod
CompanionRMMinecraft mod for 1.21.1
A smart humanoid companion that fights, mines, fishes, harvests crops, and levels up through 7 unique classes, a true second player.
- Latest version
- 0.5.0
- Minecraft
- 1.21.1
- Java
- Java 21+
- Loaders
- Fabric, NeoForge
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 649
- Updated
- 2 mo ago
- Available on
- Modrinth
Our hostingHost CompanionRM servers
One click and CompanionRM is installed with the right loader, on hardware built for it.
- 1.21.1
- Fabric
- NeoForge
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version CompanionRM declares support for, newest first, with the Java runtime that version needs.
Download
From CompanionRM’s own host. Nothing is re-hosted here.
For Minecraft 1.21.1
Choose the loader you use before downloading.
- Get NeoForge
NeoForge
0.5.0 · 29 Aug 2026 · companionrm-neoforge-0.5.0.jar
- Get Fabric
Fabric
0.4.3 · 11 Aug 2026 · companionai-0.4.3.jar
Most recently published release
companionrm-neoforge-0.5.0.jar · 1.1 MB · for 1.21.1 · NeoForge
313d5d2d0b1d…Older versions10Hide older versions
- 0.4.311 Aug 20261.21.11.1 MB
63f7da68b255…Get - 0.4.228 Jul 20261.21.11.1 MB39 downloads
23eefb194669…Get - 0.4.121 Jul 20261.21.11.0 MB46 downloads
3e6419c5cf7a…Get - 0.4.06 Jul 20261.21.11.0 MB73 downloads
4da9c4500cde…Get - 0.3.423 Jun 20261.21.10.9 MB55 downloads
8f15c755504c…Get - 0.3.322 Jun 20261.21.10.8 MB16 downloads
8f755f567c20…Get - 0.3.119 Jun 20261.21.10.8 MB22 downloads
2eebf9260840…Get - 0.3.016 Jun 20261.21.10.8 MB64 downloads
c0cf8f90cb0e…Get - 0.2.414 Jun 20261.21.10.6 MB86 downloads
14d20444a8aa…Get - 0.2.211 Jun 20261.21.10.6 MB21 downloads
02feb72012a1…Get
Frequently asked
Does CompanionRM work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version CompanionRM 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 CompanionRM 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 CompanionRM support?
Fabric, 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 CompanionRM?
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 CompanionRM 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 CompanionRM?
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 CompanionRM 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.
Is this information wrong or missing something? .