CurseForge · Minecraft mod
Block Collapse
Adds physics-based collapses to unsupported blocks, bringing a new layer of danger to mining and building.
Quick answer
Which Block Collapse release should I use?
Block Collapse 1.0.1 targets 1.21.1 with NeoForge. 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 Collapse 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 Collapse 1.0.1 need?
1.0.1. Change the file and its required mods may change too.
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 Collapse without breaking your instance.
Built for Block Collapse 1.0.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.1. It targets 1.21.1 with NeoForge; 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 1.0.1. It opens that exact file at the source.
About this project
What does Block Collapse add?
Block Collapse
Bring structural failure to your builds. Block Collapse checks nearby blocks when you place or break a block and turns blocks that have lost support into falling blocks.
Features
- Nearby blocks are checked after block placement and breaking.
- Ordinary blocks use a horizontal support search. By default, blocks can collapse when their nearest supported column is 7 or more blocks away.
- Blocks with custom support behavior, such as torches, are excluded from the structural search. They can still break normally if their supporting block falls.
- Block entities and vanilla falling blocks can fall when the block directly below has an empty collision shape, including water.
- Server settings limit the number of collapses per tick and the number of positions checked during a support search.
Requirements
- Minecraft 1.21.1
- NeoForge 21.1.235 or newer
Configuration
Server settings are stored in config/blockcollapse-server.toml.
maxCollapsePerTick(default: 100): maximum number of blocks moved into falling entities per tick.maxSearchNodes(default: 64): maximum number of positions checked during a support search.
The structural distance threshold defaults to 7 and can be set with the MAX_DISTANCE environment variable when the mod starts. It is not currently an in-game config option.
Compatibility
Block entities use Minecraft's vanilla falling-block behavior. Their inventories or other data may not be preserved in every situation.
Support Development
Block Collapse is completely free to download and use.
If you enjoy the mod and would like to support its continued development, you can make a voluntary donation on Ko-fi. Donations are entirely optional.
Thank you for your support!
Project description from CurseForge.
Pick your setup
Block Collapse by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Block Collapse versions and loaders
1.0.1
blockcollapse-1.0.1.jar
3 Nov 2026
1.0.0
blockcollapse-1.0.0.jar
22 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.