BuildCraft UNOFFICIAL

by legoj15 · on CurseForge

Unofficial port of BuildCraft 8.0.0 to newer Minecraft versions. Free Minecraft Java mod for 1.21.11, 1.21.10, 1.21.1.

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for NeoForge only.

Minecraft 1.21.11Newest
Minecraft 1.21.10
Minecraft 1.21.1

⬇ Download for 1.21.11 ⬇ Download for 1.21.10 ⬇ Download for 1.21.1

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

An Unofficial port of BuildCraft 8.0.0 to Minecraft 1.21.1+ on NeoForge

…more of an attempted faithful recreation. Please mention if something is missing or broken!

Some new features:

JEI & REI integration (REI support stops at 1.21.11 only right now)
Advanced facade de-duplication (literally cuts down on like +1000 identical facades)

On the non-commital roadmap:

Some new minor gameplay features
Further mod support

Verified by MCModsHub

Ships as BCunofficial-2026.1.1+mc26.2.jar — drop this file into the mods folder
Download size: 4.7 MB
Download link checked 23 Aug 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21