Temporary PSA
Soul Ice and Aurora's Deco blocks were "removed" when the mod was rewritten. Back up your worlds when upgrading to Arch-Ex 2.About
The mod idea for Architecture Extensions is technically based off the old ArchitectureCraft mod from MC 1.8-1.10 but the key differences are the block models retain the Minecraft pixelation and there are new blocktypes added.
Conventional Cubes' Lo-Fi wood beams: 
Cyberpunk Slums at BC23 utilzing roof blocks: 
Go to the gallery page for more images showcasing this mod: Architecture Extensions gallery
Mods that have Arch-Ex Integration
- Amarite
- Conventional Cubes
- Create Fabric
- Heart of the Machine
- Moue Milkshakes
- Nature's Spirit
- Softer Pastels | Check out their Gallery
- Tropics
Credits
- Carter for the Rose Quartz and H Beam textures: #8 on Github
- Azagwen for the roof block models: #7 on Github
- Everyone in the Quilt Community discord for helping me with this mod.
- Crackers0106 for mod icon.
- Maximum for rewriting the whole mod and adding datagen stuff on top: #16 on Github
- Falkreon for helping with datagen stuff.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as architecture_extensions-3.6.0+1.20.4.jar — drop this file into the mods folder
- Download size: 348 KB
- Download link checked 28 Aug 2026 — working
These come from our own check of the pack file, not from the source page.