Source-checkedBuilding & decoration

Block Blocker

by kreezxil · for Minecraft

Event Prevention for Blocks

10KDownloads
56d agoLast updated
MITLicense
Fabric · Forge +1Loaders

About Block Blocker

From Modrinth

Event Prevention for Blocks

 

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There are a few cases in the course of 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 don't want to see them placed in your world. For instance you don't want people building dirt towers or lava sources. You would add those ID's to the prevent-placement section of the configuration and restart your server.

 

 

 

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 speed up 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. Let me know and I'll feature it. I only ask that you link back to this page in your review description.

 

 

 

Highlights

From source data

Game versions

Supports 15 Minecraft versions, the newest being 1.21.11.

Loaders

Runs on Fabric, Forge and NeoForge.

Footprint

Rated a light load on a server.

Block Blocker on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Fabric, Forge, NeoForge
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
1.4.3, released 2026-09-09

Game versions by loader

LoaderGame versionsNewest
Fabric1.21.4 to 1.21.11 (2 versions)1.21.11
NeoForge1.21.4 to 1.21.11 (2 versions)1.21.11
Forge1.7.101.7.10

From 5 recorded builds of Block Blocker.

Recent builds

BuildReleasedGame versionsLoaders
1.4.32026-09-091.7.10Forge
1.13.02026-03-191.21.11NeoForge
1.12.02026-03-191.21.11Fabric
1.11.02025-04-281.21.4Fabric
1.12.02025-04-281.21.4NeoForge

Dependencies

  • Required: modrinth project P7dR8mSH (modrinth, not in our catalogue)
  • Required: modrinth project 9s6osm5g (modrinth, not in our catalogue)

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Block Blocker on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Building & decoration

Blocks, furniture, decorations and building tools.

Runs on your server

From source side support

Modrinth lists Block Blocker as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
FabricForgeNeoForge
Runs on
Serverrequired on the server
Game versions
1.21.11 and 14 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-02Open ↗
  • ✓Authorkreezxil, as published on Modrinth
  • ✓LicenseMITFree

Block Blocker, answered

Generated from the mod’s own source data.

Do my players need to install Block Blocker?

Modrinth lists Block Blocker as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Fabric, Forge and NeoForge.

Is it free?

Yes. Block Blocker is free to download from Modrinth. Its license is MIT.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Block Blocker on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add Block Blocker in one click.