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minecraft:replace_biomes is a biome component: it goes in the components object of a custom biome. Swaps out part of one or more existing biomes with this biome, so you can add a custom biome into normal worlds.
Fields
| Field | Type | Default | Description |
|---|---|---|---|
replacements | Biome Replacement[] | none | List of replacement rules: which biomes to swap, in which dimension, and how much. Add new rules at the end, since changing the order changes how worlds generate. |
Example
Inside the components object of BP/biomes/<name>.biome.json (values are the defaults or placeholders):
BP/biomes/<name>.biome.json
{
"minecraft:replace_biomes": {
"replacements": []
}
}