Effortless Building Mod | Minecraft JAVA Mod

Effortless Building Mod makes building easier by providing tools like mirrors, arrays, build modes and a block randomizer. The author realised that many well-known mods make it easier to break blocks (hammers, quarries, veinminer), but not many focus on placing them. Even the most experienced players still often place blocks one by one. And that’s reason Effortless Building Mod has been released.

Creator: Requioss (youtube)

Effortless Building Mod

  • Mirror blocks in realtime
  • Build repeated sections quickly using arrays
  • Place random blocks using the Randomizer Bag
  • Quickly replace existing blocks (toggle with a key press)
  • All of the above works in synergy
  • Works in survival and creative mode
Minecraft Addons Maker (MAM)

Switch build modes by holding ALT.

Build Modes

Hold ALT to switch build modes. On the left side there are buttons for undo/redo, opening the modifier settings and toggling QuickReplace (see below). On the right side there are options for each build mode, like a filled vs hollow wall, or faster building in Normal+.

Build modes:

Effortless Building Mod
Effortless Building Mod
  • Normal: vanilla placement
  • Normal+: increased reach
  • Line: place lines of blocks in any 3 axis
  • Wall: place walls with locked x or z axis
  • Floor: place ‘walls’ with locked y axis
  • Diagonal Line: place freeform lines of blocks
  • Diagonal Wall: place walls at any angle
  • Slope Floor: place slopes at any angle
  • Cube: place cubes with 3 clicks
  • Circle: place blocks in a circle (ellipse)
  • Cylinder: place a cylindrical shape like a tower
  • Sphere: place a spheroid made of cubes

Build Modifiers

Minecraft Addons Maker (MAM)

Open modifier settings with the + key on the numpad, or click the button in the ALT menu.

Build modifiers:

  • Mirror
  • Array
  • Radial Mirror

Mirror blocks in realtime, as you place them. Works with even and uneven builds (add .5 to the position). Rotates blocks like stairs, logs, slabs, pistons etc properly.

Set position, radius (size) and what axes to mirror by pressing the + key on the numpad.


The array modifier copies your build in a certain direction a certain number of times. Very useful for nether tunnels but also useful for quickly building walls etc.

It is possible to add offset to multiple directions so diagonal builds are possible (e.g. a nether tunnel that goes upwards or sideways). And of course breaking blocks is also supported for if you make a mistake.

Set offset and count by pressing the + key on the numpad.

Radial Mirror

The radial array lets you place blocks in a circle around a certain point. The circle can be divided into slices, and each slide will copy your block placements.

I heard you liked mirrors, so I put mirrors in your radial mirror. Mirror every other slice by enabling alternative mode.

Set position, slices, radius and alternative mode by pressing the + key on the numpad.

Randomizer Bag

Put blocks in the bag, then rightclick to place a random block from the bag. Adjust ratios by filling slots with the same block (e.g. 2 slots cobble + 1 slot stone makes for a 2:1 ratio). Handy for building walls and paths with variation. Combine with array and QuickReplace for super easy path building.

Crafting recipe:

Leather Randomizer Bag (5 slots)

Craft by surrounding any wooden planks with leather.

Effortless Building Mod

Golden Randomizer Bag (9 slots)

Effortless Building Mod

Diamond Randomizer Bag (27 slots)

For 1.16: use purple dye instead of amethyst shards.

Effortless Building Mod


Playing this mod in survival mode is fully supported. When playing in survival mode:

  • All actions consume the right amount of blocks.
  • You have to use the appropriate tool to break blocks.
  • This correctly damages the tool based on how many blocks are broken.
  • Replacing only works on blocks that can be harvested by hand (changeable in config).
  • Mining speed is decreased for each additional block mined (change percentage in config).

Explanation video:

Recommended: use Magic Feather to get flight while building. 


Press the – (minus) key on the numpad to toggle QuickReplace (or click the button in the ALT menu). When on, new blocks you place won’t be put on the block you are looking at, but replace it. Handy for swapping out floors or replacing materials in general.

Note: in survival mode QuickReplace only works with blocks that can be harvested by hand. You can change this setting in the config.


Your reach determines how far away you can place blocks. It also determines the maximum radius of the mirror and the reach of the array.

Increase your reach using craftable reach upgrades. They need to be used in order, it is not possible to skip straight to upgrade 3 without using 1 and 2. Numbers can be edited in config.

Reach Upgrade 1

Block placing: 12 blocks

Mirror radius: 25 blocks

Array reach: 50 blocks

Effortless Building Mod

Reach Upgrade 2

Block placing: 25 blocks

Mirror radius: 50 blocks

Array reach: 100 blocks

Effortless Building Mod

Reach Upgrade 3

Block placing: 50 blocks

Mirror radius: 100 blocks

Array reach: 200 blocks

Effortless Building Mod
Effortless Building Mod

Download Effortless Building Mod

Some Minecraft Addon PE you can check in Mcpe addons:

Minecraft Addons Maker (MAM)

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