Everything Is Sulfur Cube

Server-side Fabric mod for Minecraft Java 26.2.

When a player tries to break a block, the block is replaced with a real minecraft:sulfur_cube carrying that block in its body slot. Right-click block placement is not changed.

Players do not need to install this mod on their clients when joining a server that has it installed.

Features

• Converts left-clicked blocks into block-sized Sulfur Cubes.
• Stores the interacted block item in the cube's body equipment slot.
• Prevents the original block item from dropping during conversion.
• Keeps empty Sulfur Cubes visible and unmanaged.
• Supports per-player Sulfur Cube shell visibility for cubes carrying blocks.
• Sends no command feedback to player chat; changes are logged to the server console.

Commands

Player commands:

/eiscubes visible
/eiscubes invisible
/eiscubes reset

Admin commands:

/eiscubes default visible
/eiscubes default invisible
/eiscubes players allow
/eiscubes players deny

/eiscubes players deny prevents non-admin players from changing their personal visibility mode. Admins can always change their own mode and the default mode.

Config

The config file is created at:

config/everything_is_sulfur_cube.properties

Important keys:

defaultInvisible=false
allowPlayerVisibilityChanges=true

Player-specific preferences are saved by UUID.

Requirements

• Minecraft Java 26.2
• Fabric Loader 0.19.3 or newer
• Fabric API

Notes

The mod uses a server-side mixin to send different vanilla entity metadata to different players. No custom client networking is required.