CurseForge · Minecraft mod
Block Blocker
Event Prevention for Blocks
Quick answer
Which Block Blocker release matches 1.12.2?
Block Blocker blockblocker-1.12.2-1.3.1.jar targets 1.12.2 with Forge. 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 Block Blocker 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 Block Blocker blockblocker-1.12.2-1.3.1.jar need?
blockblocker-1.12.2-1.3.1.jar on 1.12.2. Every mod below is checked against that same setup.
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 Block Blocker without breaking your instance.
Built for Block Blocker blockblocker-1.12.2-1.3.1.jar on 1.12.2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use blockblocker-1.12.2-1.3.1.jar. It targets 1.12.2 with Forge; 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 blockblocker-1.12.2-1.3.1.jar. It opens that exact file at the source.
About this project
What does Block Blocker add?
If you want a server setup using Block Blocker with zero effort, get a server with BisectHosting and receive 25% off your first month as a new customer using the code kreezxil

There are a few cases during modding history where it is evident that a mechanism is required to prevent the breaking or placing of blocks into the Minecraft world. This mod provides a configuration that allows a server administrator to specify the blocks that they do not want to be breakable nor to be placed.
For example:
In some versions of Ice and Fire there exists a pixie house that is world gen'd in and when it is broken the client and server both crash. To prevent this, you would add the ID for the pixie house to the configuration and restart your server. Now no one can break the block and crash the server.
There may be other cases where you would want this behavior.
Another example:
You have a hard mode pack, and you want to make it harder; therefore you add other blocks to the list to prevent them from being broken, much like bedrock. Stone, Gravel, Sand could be some.
Similarly, why stop there, maybe there are certain blocks in your world that have crafting uses, but you would rather not see them placed in your world. For instance, you don't want people building dirt towers or lava sources. You would add those IDs to the prevent-placement section of the configuration and restart your server.
Duplication Bugs?
Simply remove minecraft:air from the config.
The mod is not required on the client but can exist and run there as well, which is great for LAN and Hamachi play too.
The following example config is the config that generates when you first run the mod, this way you can prepopulate the config the with blocks you want to block for placing and harvesting.
blockblocker.cfg
Notes
Does not block fluid placement. There is an excellent mod that does that already found at https://www.curseforge.com/minecraft/mc-mods/no-lava-bucketing
Now ported to 1.7.10
None of the versions support title entities or nbt data. Possibly planned, but can't say when, a fat donation of higher than $20 at https://patreon.com/kreezxil can accelerate this process. Make sure you send me a message via private what your donation email was and what it was for.
Modpacks
No need to ask, just add. A link back, not required, but sure would be sweet.
Reviewers
Go ahead. Please tell me and I'll feature it. I only ask that you link back to this page in your review description.
Project description from CurseForge.
Pick your setup
Block Blocker by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.4
2 loader builds1.21.1
2 loader builds1.20.4
2 loader builds1.20.2
2 loader builds1.20.1
2 loader builds1.19.4
2 loader builds1.19.3
2 loader builds1.19.2
2 loader builds1.18.2
2 loader builds1.18.1
1 loader build1.16.5
1 loader buildShowing the newest 12 of 19 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
Block Blocker versions and loaders
blockblocker-1.12.2-1.3.1.jar
28 Jun 2019
blockblocker-1.12.2-1.2.1.jar
23 Jun 2019
blockblocker-1.12.2-1.1.2.jar
21 Mar 2018
blockblocker-1.12.2-1.0.jar
22 Jan 2018
Looking for an older file? The official CurseForge project page is in Resources.


