Block Masher
Minecraft Java mod. Downloads from the MC Java Mods app on Android.
Test modded blocks -Meant for testing mods- this mod places every block available in every possible combination to test for performance and crashes.
⬇ Download on CurseForgeGoshen - I do a lot of Minecraft mod testing, I have always felt it important to help mod authors by submitting bug reports, which is why I have hundreds on github. Every new Forge version I mash all of the available mods and set up a server and test with my ProsperCraft community.
One day when reporting a crash due to one block being placed next to another late in testing one of my modpacks, the idea for this mod came to me, why not do this in an automated way so we can quickly test every possible combination so we can deal with the issue early in development of mods and modpacks while the devs are still active in coding their mods.
How it works-
First create a superflat world, then run one of these commands.
Example commands-
/blockMasher testBlock All 0 down 1
This will test every block in a modpack with every other mod in the modpack, one at a time.
/blockMasher testLine All 0 down 1 east
This will place rows of every placable block in rows so you can view every mod in a modpack.


/blockMaster help
For more options.
Mod supports:
Help Feature, AutoCompleteable command (if the console/chat supports that), Stop command to stop it at any time, Block & Mod support for selection of what to test. Dimension, Position, Facing, Delay(between each placement) control It prevents also that block drops spawns so you don't have drops that can spawn. (It only prevents item spawns in that regard) A log is also created that lists all Blocks being placed (as Item registry name & Meta) in the pack folder as blockMasher.txt
- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as BlockMasher_V1.1.jar — drop this file into the mods folder
- Download size: 24 KB
- Download link checked 13 Oct 2026 — working
These come from our own check of the pack file, not from the source page.