CurseForge · Minecraft mod
OpenCubes
A modern reimagining of OpenBlocks for NeoForge, bringing back its iconic utility blocks, gadgets and quirky gameplay for modern Minecraft.
Quick answer
Which OpenCubes release should I use?
opencubes-26.1.2-1.0 targets 26.1.2 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. 1 required mod needs a matching file.
Where it goes
Is OpenCubes 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 opencubes-26.1.2-1.0 need?
opencubes-26.1.2-1.0. Change the file and its required mods may change too.
Install ConnectedTexturesMod, Curios API, Patchouli first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add OpenCubes without breaking your instance.
Built for opencubes-26.1.2-1.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use opencubes-26.1.2-1.0. It targets 26.1.2 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install ConnectedTexturesMod, Curios API, Patchouli first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match.
- 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 opencubes-26.1.2-1.0. It opens that exact file at the source.
About this project
What does OpenCubes add?

Hang gliders, elevators, tanks, graves, a chest with legs, and a crane you strap on. OpenCubes is the OpenBlocks toolbox, for modern Minecraft versions.
Written for NeoForge, from the old ideas.
Getting around
Stand on an elevator and jump to go up, sneak to go down. Fans throw you across a gap. A sleeping bag lets you pass the night anywhere, and your spawn point stays where it was. The hang glider rides thermals. The thermal elytra does the same thing on vanilla wings.
Building
The building guide ghosts in the blocks of a shape so you can follow them. Village highlighters trace the edge of a village. Sky blocks are windows with the weather behind them. Sketch blocks with a pencil that only you can see, then hand out glasses if you want anyone else in on it. There's paint, a drawing table and canvas when the walls are the problem.
Machines
Tanks hold fluids, liquid XP included. Drain it, shower in it, or stand on a healer and spend it. Vacuum hoppers pull in items and XP. Auto anvils and auto enchanting tables run once you feed them. Aim the item cannon and it fires stacks out of a chest. Sprinklers water the crops.
The other half
Die, and your inventory waits in a grave. The luggage follows you and eats whatever you drop. Get it struck by lightning and it holds twice as much. The crane on your back picks blocks up from across the room. A golden egg hatches into a small copy of you. Mobs you kill can drop a trophy: place it and right-click, and the chicken lays an egg while the creeper hisses. Bear traps, sponges that drink lava, sonic glasses and a cursor are in the same tab.
Craft a book with a clay ball for the guide. It's called World Domination, and it needs Patchouli. JEI, Jade and Curios are picked up if you already have them.
Credits
Inspired by OpenBlocks by the OpenMods team, and by OpenBlocks Reopened. Independent project. Not an official continuation.
Project description from CurseForge.
Pick your setup
OpenCubes by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
OpenCubes versions and loaders
opencubes-26.1.2-1.0
opencubes-26.1.2-1.0.jar
8 Oct 2026
opencubes-1.0
opencubes-1.0.jar
3 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.