This is a simple utility mod built for NeoForge modpack developers. It automatically creates the folder structures needed to add custom dimensions for the player to spawn in.

On the very first boot, it automatically generates a required data pack inside your global_packs/required_data/ folder. This includes templates for a dimension and a dimension_type.

Inside config\startingdimension-common.toml, you can set some important properties, such as:

Dimension Name (JSON File name must match)
Dimension Type (Dimension Type in Dimension.JSON must match name)
Spawn Coordinates (Rough placement of player)
Spawn Dimension (Should the player start here on World Creation?)
Respawn in Dimension (Respawn here if no spawn point set?)
Ignore Set Spawn Point (Respawn here even if a player has set spawn point)

By utilizing the config file, you can create all sorts of worlds. The player doesn't even have to start here. You could create a netherlike place where the player is forced to go upon character death, regardless of spawn point.

Here is an example Dimension named Frozen Wasteland:

{
  "type": "startingdimension:frozen",
  "generator": {
    "type": "minecraft:flat",
    "settings": {
      "layers": [
        {
          "height": 1,
          "block": "minecraft:bedrock"
        },
        {
          "height": 63,
          "block": "minecraft:powder_snow"
        },
        {
          "height": 1,
          "block": "minecraft:ice"
        }
      ],
      "biome": "minecraft:frozen_peaks",
      "features": false,
      "lakes": false
    }
  }
}

Dependencies:

Global Packs

Starting Dimension