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How to Change Minecraft Biomes Using the Fillbiome Command

After years of waiting, you can finally change and replace biomes in Minecraft. We’re not just talking about transporting blocks and mobs from one biome to another. Instead, a new command in Minecraft 1.20 lets you move all of the environment features, mob spawns, and other elements of a biome anywhere in the game. This opens up a ton of possibilities, especially for the best minecraft maps and some previously impossible minecraft mob farms. But let’s not get ahead of ourselves and first learn how to change biomes in Minecraft using the fillbiome command.

How To Change Biomes In Minecraft 1.20 (2022)

Please note that the fillbiome command was first introduced with Minecraft 1.20 Snapshot 22W46A and is still being tested. Therefore, its syntax, functioning and mechanics could be changed before the final release.

What is a biome in Minecraft?

In Minecraft, the term biome refers to the Environmental features of a specific region including atmosphere, sky, ambient sounds, and even texture toning. Not to mention, some Minecraft mobs can only spawn in certain biomes. For example, the desert biome has a high temperature, no spawn mechanics for plants, and spawns camels and husks in relation to exclusive mobs. Husks are a variant of zombies that only spawn in the desert.

Two Forests of Minecraft - How to change biomes in Minecraft
Biome Diversity | Forest (L) & Crimson Forest (R)

As you may have noticed, while describing any biome, we’re not talking about blocks. That’s because you can replace blocks in a biome, but you can’t change their environmental features. This makes it impossible for nether mobs to spawn in the overworld and vice versa. Well, at least until you decide to Use the fillbiome command.. When this command is run, it changes the default biome-based capabilities of one location with the capabilities of another biome in Minecraft. Later more.

Exclusive features of biomes

Almost every Minecraft biome has some exclusive features. You can use our linked guide to learn more about each of them. But to save you some time, here are some examples of such features that you can consider when testing the new command:

  • Mushroom Fields: Enemy mobs cannot spawn in this biome
  • purple forest (Nether): Known for its mist and reddish particles
  • Empty: The biome where no plants, structures, or mobs spawn
  • Wasteland: Gold ores spawn the most in this biome
  • Exit Highlands: Only endermen spawn in this biome
  • Savannah: The plantation and blocks in this biome have a light sepia color scheme

How does the Fill Biome command work?

The new fill biome command is similar to the existing fill command in Minecraft. the previous replaces an area’s biome-based traits, while the latter replaces the blocks of that region. However, remember that unlike blocks, biomes do not have strict coordinates. Instead, if you’re a seasoned Minecraft player, you know that different biomes intermingle the blocks at the edges where they meet. So you need to expand your coordinates while trying to change a biome in Minecraft.

With the basics out of the way, here is the syntax for the biome fill command:

/fillbiome A_coordinates B_coordinates biom_name

On a three-dimensional plane, A_Coordinates is the corner of the area from where you want the biome change to start, and B_Coordinates is where you want the biome change to end. Both coordinates must be given in numerical values corresponding to the X, Y and Z dimensions. Here, X, Y, and Z stand for Altitude, Elevation, and Latitude, respectively.

Finally, after the coordinates, you must enter the Biome name you want to fill the area with. Once you execute the command, the biome in the entire area between these two points will be replaced with the biome of your choice.

Turning forest into savannah in Minecraft - How to change biomes in Minecraft

example 1: The following command fills the bounding area with the savanna biome Here, “~‘ are the coordinates of your current location, and the value next to it adds blocks to those coordinates. like that,”~-10” on Y means 10 blocks below your location.

/fillbiome ~ ~ ~ ~10 ~-10 ~40 minecraft:savanna

Example #2: This command replaces the existing biome between the specified coordinates with the void biome in Minecraft.

/fillbiome -12 22 44 -44 -10 -19 minecraft:void

How to use the fill biome command in Minecraft

Just like all other useful Minecraft commands, you have to first have to Turn on cheats from settings to use fillbiome command to change biomes in Minecraft. That’s how it works.

Step #1: Enable Cheats in Settings

1. First press ESC and open the pause menu in Minecraft. Then click “Open to local network” button.

LAN world option Java pause game menu

2. Select from the LAN World menu set the “Allow Cheats” option to “On” by clicking on it. Then click “Start LAN world” button below.

Enable cheats

Step #2: Change the biome in Minecraft

Now that you know how fill biome works and have cheats enabled in your Minecraft world, it’s time to see the command in action. Follow the steps below to change the biome of any region in Minecraft:

1. First you need to activate the coordinates in your world. You can do this by using Pressing the “F3” key. on your keyboard, which will bring up the debug overlay. It has your current coordinates labeled XYZ on the information panel on the left.

Coordinates in Minecraft with focus on Y axis
Cropped screenshot of debug overlay

2. Then go to a corner of the world where you want the new biome to start and Write down the coordinates of this place. You can also place a block there to add a visual reminder. For us are the coordinates -150, 71, 936.

Coordinates of a corner for the Fillbiome command

3. Then go to the corner where you want the biome changes to end and note the coordinates. In our case, the coordinates are -122, 78, 946. Please note that walking from one place to another is best travel vertically also. Some biome effects, such as B. mob spawning, need a slightly larger area of ​​effect to work properly.

Coordinates of the second corner for the fillbiome command

4. Finally, Open your in-game chat (Press the “T” key) and enter the command using the coordinates you wrote down. Since we want to change our current biome to layers, the command for us is “/fillbiome -150 71 936 -122 78 946 minecraft:plains“. As soon as you hit the “Enter” key, the command kicks into action and replaces the biome features.

Fillbiome command to change biome in Minecraft

Use the Fillbiome command to change Minecraft biomes

With that, you have now unlocked the power to bring deserts to mountains and the Nether to the overworld. As for the Nether, however, Minecraft Legends brings a collision between the two worlds in a unique strategy game style as early as next year. The only catch is that you have to fight a war to survive. Luckily, there are a number of new Minecraft Legends mobs to aid you in your conquest. Not going far off topic, what biome are you planning to fill your Minecraft base with? Tell us in the comment section below!

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