Biome Documentation - minecraft:replace_biomes

Replaces a specified portion of one or more Minecraft biomes.

Minecraft Replace Biomes Biome Properties

Name	Default Value	Type	Description	Example Values
replacements	not set	Array of Replacements items	List of biome replacement configurations. Retroactively adding a new replacement to the front of this list will cause the world generation to change. Please add any new replacements to the end of the list.

Replacements item type

Represents the replacement information used to determine the placement of the overriding biome.

Biome Replacement Properties

Name	Default Value	Type	Description	Example Values
amount	not set	Decimal number	Noise value used to determine whether or not the replacement is attempted, similar to a percentage. Must be in the range (0.0, 1.0]. Value must be <= 1.
dimension	not set	String	Dimension in which this replacement can happen. Must be 'minecraft:overworld'.
noise_frequency_scale	not set	Decimal number	Scaling value used to alter the frequency of replacement attempts. A lower frequency will mean a bigger contiguous biome area that occurs less often. A higher frequency will mean smaller contiguous biome areas that occur more often. Must be in the range (0.0, 100.0]. Value must be <= 100.
targets	not set	Array of objects	Biomes that are going to be replaced by the overriding biome. Target biomes must not contain namespaces. Value must have at least 1 items.