
Buildcraft-Legacy
A port of buildcraft with new textures, new features and a feeling of nostalgia
Screenshots




About this Mod
This port is unofficial. The original buildcraft is licensed under MPL 2.0 just like this mod. No code/assets were reused.
Original mod (1.12 and prior): https://www.curseforge.com/minecraft/mc-mods/buildcraft
A port of buildcraft to modern versions
About
This project, originally created for Modfest 2024, is an attempt at porting Buildcraft, step-by-step. This is why the mod only has a handful of features right now, but will be expanded gradually. The mod is not a 1:1 replica of the Buildcraft mod, but still very faithful. I decided to also include features from other old mods, that people used a lot with buildcraft like the Factorization Barrels.
The mod is still in its early stages and prone to bugs.
Roadmap
For anyone interested, here is a rough content roadmap:
- Item Pipes, Crates, Tanks, Oil - Initial Release
- Engines (Redstone, Stirling, Combustion, Creative) < Current
- Pump/Quarry
- Fluid Pipes
- Lasers
- Advanced filters
- ...
Note that there is no ETA for any of these features, as I maintain and develop a lot of mods, which means the time I have to work on this, may vary strongly.
If you are interested in helping out, dont hesitate do submit a pr for a feature/bug-fix and join the Discord!
Discord
Discord for help and discussion: https://discord.gg/saPrxkwpEa
Looking for a server?
Thank you!
Credits
Credits to all the amazing people who worked/are working on the original buildcraft <3
Visit their hall of fame
Modfest

Available Versions
How to Install Buildcraft-Legacy on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Buildcraft-Legacy". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Buildcraft-Legacy server crashes on startup – what to do?
Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Buildcraft-Legacy compatible with neoforge?
Buildcraft-Legacy officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Buildcraft-Legacy – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Buildcraft-Legacy consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Buildcraft-Legacy with just one click on your server.