Creating Your Minecraft Biome: A Comprehensive Guide

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Creating Your Minecraft Biome: A Comprehensive Guide


Creating your custom Minecraft biome can be an exciting endeavor, but it requires a deep understanding of various settings. This guide aims to provide you with a comprehensive overview of the key elements involved in biome creation. From terrain generation to biome characteristics, we'll cover it all.

Biome Settings

Basic Properties

  1. Ground Block: Choose the block that replaces grass. It should have the GRASS material and be tagged in forge:dirt Blocks tags for proper plant and tree spawning.
  2. Underground Block: Select the block to replace dirt, also tagged in forge:dirt Blocks for proper spawning.
  3. Name: Give your biome a unique name.
  4. Colors: Set colors for the sky, grass, leaves, water, and underwater fog.
  5. Tree Type: Decide whether you want a vanilla tree or a custom tree.
    • Vanilla Tree: Choose from the list.
    • Custom Tree: Customize the tree's appearance, including minimal height, stem, branch, vines, and fruits.


Fine-tune the presence of various elements in your biome:

  • Trees Per Chunk: The number of trees in one chunk.
  • Grass Per Chunk: The quantity of tall grass.
  • Seagrass Per Chunk: The number of tall seagrass.
  • Vanilla Flowers Per Chunk: The amount of vanilla flowers like poppies.
  • Mushrooms Per Chunk: Control mushroom generation.
  • Big Mushrooms Per Chunk: Determine mushroom tree frequency.
  • Sand Patches Per Chunk: Group of sand blocks.
  • Gravel Patches Per Chunk: Similar to sand patches but for gravel.
  • Reeds Per Chunk: Set the number of sugar canes, for instance.
  • Cacti Per Chunk: Define the quantity of cacti.
  • Dead Bushes Per Chunk: This feature has been removed.
  • Biome Default Features: Add other features unique to your biome.


Choose the structures you want in your biome:

  • Generate Village of Type: Spawn villages of a specific type or none at all.
  • Generate Ocean Ruins: Opt for ocean ruins made of stone, sandstone, or none.


Control the audio and visual aspects:

  • Biome Music and Sounds: Set the background music, ambient sound, additional sound, and mood sound.
  • Mood Sound Delay: Define the time delay for mood sounds.
  • Ambient Particles: Enable or disable ambient particles and choose their type.

Entity Spawning

Specify which entities spawn in your biome:

  • Entity: Select the entity to spawn (e.g., mobs).
  • Spawn Type: Choose the spawning type (Monster, Creature, Ambient, WaterCreature) and set spawn weight.
  • Min and Max Group Size: Determine group size limitations for entity spawns.

Biome Generation

2023.1 And Up

Newer versions rely on climate temperature and rain probability:

  • Climate Temperature: Control your biome's temperature.
  • Climate Rain Probability: Manage humidity.
  • Generate in Overworld: Enable/disable biome generation in the overworld.
  • Generate Biome in Overworld Caves: Specify if the biome generates as a cave biome in the overworld.
  • Generate Biome in Nether: Choose whether the biome generates in the nether dimension.
  • Overworld Surface Coverage Estimate: Get an estimate of biome occurrence in the overworld.
  • Biome Generation Temperature Range: Define the temperature range for biome generation.
  • Biome Generation Continentalness Range: Control whether the biome generates inland or out at sea.
  • Biome Generation Erosion Range: Influence biome placement based on terrain flatness or bumpiness.
  • Biome Generation Weirdness Range: Adjust the biome's allowed area size.

Before 2023.1

For older versions, consider these settings:

  • Generate Biome in Overworld: Decide if your biome will appear in the overworld.
  • Biome Weight: Control frequency compared to other biomes.
  • Biome Temperature: Set the temperature (0 for Snowy Tundra, 2 for Desert).
  • Raining Possibility: Define rainfall frequency (0 for no rain).
  • Biome Type, Category, and Parent: Customize type, category, and proximity to other biomes.
  • Biome Dictionary Types: Specify biome types for mod compatibility.
  • Biome Base Height: Adjust the average height (e.g., mountains have a high value).
  • Biome Height Variation: Control terrain height variation (higher values create mountains, lower values flatten terrain).

1.18+ Biomes

For versions above 1.18, consider:

  • Weight, Temperature, Raining Possibility, Base Height, Height Variation: These parameters are crucial and affect biome generation.
  • Biomes with similar settings may compete for the same spots, leading to smaller, scattered biomes. Ensure diversity.
  • High biome weight and similar parameters to other biomes can prevent your biome from generating.
  • World generator attempts to find the best match, but with few biomes, your biome may generate in unintended areas.

A Quick Reference

  • 2023.1 And Up: Utilize ranges to set biome generation values, making it user-friendly.
  • Before 2023.1: Maintain diverse group settings from other biomes for better generation.
  • Adjust "Weight," "Base Height," "Height Variation," "Temperature," and "Raining Possibility" for unique biomes.

Minimum and Maximum Values

Understanding value ranges is crucial:

  • Minimum Values: Often represented as negative numbers (e.g., -1 or -0.5) with specific effects like creating frozen biomes.
  • Maximum Values: Usually positive numbers (e.g., 1 or 0.5) to set limits, such as temperature or rainfall thresholds.

Experiment with these values to create diverse biomes, from icy tundras to scorching deserts. Consult documentation for specifics.

By mastering these settings, you can craft intricate, unique biomes in your Minecraft world.

Surface Building Block and Fluid

Two critical elements:

  • Surface Building Block: Choose the block to form the surface of your biome.
  • Underground Block: Define the block below the surface, which can affect terrain generation.

Name and Tags

Use tags to categorize and define your biome:

  • Name Tags: Assign tags to blocks, fluids, and biomes for easy reference.
  • Generated Temperature: Set the temperature range for biome generation, either by increasing or decreasing values.

By following this comprehensive guide, you'll be well-equipped to create your unique Minecraft biome with precision and clarity using MCreator. Remember to experiment and fine-tune your settings for the best results. Happy biome designing!