CurseForge · Minecraft mod
M-Arch
This is a library mod required for my other mods to function properly.
Quick answer
Which M-Arch release should I use?
M-Arch 1.21.11 targets 1.21.11 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is M-Arch required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does M-Arch 1.21.11 need?
M-Arch 1.21.11. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add M-Arch without breaking your instance.
Built for M-Arch 1.21.11. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use M-Arch 1.21.11. It targets 1.21.11 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside M-Arch 1.21.11. It opens that exact file at the source.
About this project
What does M-Arch add?
This project is a lightweight Minecraft library mod designed to provide shared utilities, helper functions, and core systems for other mods. It does not add any standalone gameplay features on its own. Instead, it acts as a foundational framework that ot My mods : https://www.curseforge.com/minecraft/mc-mods/arcbuilder
. . . :

Project description from CurseForge.
Pick your setup
M-Arch by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader build1.21.3
1 loader build1.21.2
1 loader build1.21.1
1 loader build1.21
1 loader build1.20.6
1 loader buildShowing the newest 12 of 18 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
M-Arch versions and loaders
M-Arch 1.21.11
march-1.0.8.jar
14 Feb 2026
M-Arch 1.21.9
march-1.0.8.jar
14 Feb 2026
M-Arch 1.21.8
march-1.0.8.jar
14 Feb 2026
M-Arch 1.21.7
march-1.0.8.jar
14 Feb 2026
M-Arch 1.21.6
m-arch-1.0.8.jar
14 Feb 2026
M-Arch 1.21.5
m-arch-1.0.8.jar
13 Feb 2026
M-Arch 1.21.4
m-arch-1.0.8.jar
13 Feb 2026
M-Arch 1.21.3
m-arch-1.0.8.jar
13 Feb 2026
M-Arch 1.21.2
m-arch-1.0.8.jar
13 Feb 2026
M-Arch 1.21.1
m-arch-1.0.8.jar
13 Feb 2026
M-Arch 1.21.0
m-arch-1.0.8.jar
13 Feb 2026
M-Arch 1.20.6
march-1.0.8-1.20.6.jar
13 Feb 2026
Looking for an older file? The official CurseForge project page is in Resources.