Custom Dimensions

If you want to add more dimensions or keep default world gen, you may add custom dimensions where the player should play in a skyblock like world. This may be achieved by adding new dimensions using the structure shown below. For each of the vanilla dimensions, there is one pre-defined json pattern. Use the one you'd like to use.

Overworld

On the left, you may find the default dimension setting for the overworld. Use this to create overworld-like skyblock dimensions. On the right side, there's the custom biome source used for centered biomes. This may be used if the parent preset is minecraft:overworld or minecraft:nether only. It may work with some modded biome sources as well, but only if they are an instance of MultiNoiseBiomeSource. That means, you may also use it in The Nether.

data/<namespace>/dimensions/overworld.json

{
  "type": "minecraft:overworld",
  "generator": {
    "biome_source": {
      "preset": "minecraft:overworld",
      "type": "minecraft:multi_noise"
    },
    "settings": "minecraft:overworld",
    "dimension": "minecraft:overworld",
    "type": "skyblockbuilder:noise_based"
  }
}

data/<namespace>/dimensions/overworld.json

{
  "type": "minecraft:overworld",
  "generator": {
    "biome_source": {
      "center_biome": [
        {
          "id": "minecraft:plains",
          "radius": 64
        }
      ],
      "parent": {
        "preset": "minecraft:overworld"
      },
      "type": "skyblockbuilder:sky"
    },
    "settings": "minecraft:overworld",
    "dimension": "minecraft:overworld",
    "type": "skyblockbuilder:noise_based"
  }
}

The Nether

This is the configuration for a voided nether.

data/<namespace>/dimensions/the_nether.json

{
  "type": "minecraft:the_nether",
  "generator": {
    "biome_source": {
      "preset": "minecraft:nether",
      "type": "minecraft:multi_noise"
    },
    "settings": "minecraft:nether",
    "dimension": "minecraft:the_nether",
    "type": "skyblockbuilder:noise_based"
  }
}

The End

data/<namespace>/dimensions/the_end.json

{
  "type": "minecraft:the_end",
  "generator": {
    "biome_source": {
      "type": "minecraft:the_end"
    },
    "settings": "minecraft:end",
    "dimension": "minecraft:the_end",
    "type": "skyblockbuilder:the_end"
  }
}