EGMD

Ejafi Games Mining Dimensions (EGMD)

EGMD is a NeoForge mod for Minecraft 1.21.1 that adds three flat, ore-rich mining dimensions, so you can mine without damaging your main world.

Player Guide

Portals

Build a frame like a Nether portal, with an inside from 2x3 to 21x21, and put one of the dimension's corner blocks in each of its four corners. Light it by clicking the frame, or a fire burning on the bottom of the frame, with Flint and Steel or a Fire Charge. A portal leads from the Overworld to its mining dimension and lights only in those two dimensions. In the Overworld, a frame with the wrong corners tells you which corner blocks it needs.

Corners are needed only to light a portal. This is a protection against accidental portals in dimensions like Nether Mining or End Mining, where every tunnel is a frame. A lit portal keeps working without the corners.

When the other side has no portal, the mod builds one with the corner blocks of the portal you came through. It uses the dimension's default corner block for any corner that doesn't qualify, and for Sand, Red Sand, or Gravel in a bottom corner. In a mining dimension the portal sits on the flat surface. It clears room for itself when needed, but never replaces another portal, an unbreakable block, or a block that stores data, such as a chest, sign, or spawner.

When no safe spot exists, you stay where you are and see a message. Otherwise you arrive in front of the portal, behind it if the front is blocked, or inside it if both sides are blocked.

The Dimensions

Dimension	Frame	Corners	Default corner	Layers, top to bottom	Surface
Overworld Mining	Cobblestone	Dirt, Coarse Dirt, Rooted Dirt, Grass Block, Podzol, Mycelium, Gravel, Sand, or Red Sand	Dirt	Grass Block, 2 Dirt, 64 Stone, 64 Deepslate, Bedrock	Y 68
Nether Mining	Netherrack	Cobblestone, Mossy Cobblestone, Cobbled Deepslate, Stone, Andesite, Diorite, Granite, Deepslate, or Tuff	Cobblestone	128 Netherrack, Bedrock	Y 129
End Mining	End Stone	Netherrack, Obsidian, Crying Obsidian, Prismarine, Prismarine Bricks, or Dark Prismarine	Netherrack	64 End Stone, Bedrock	Y 65

Infested blocks count as the block they imitate, in both the frame and the corners.

Overworld Mining has far more Coal, Iron, Copper, Gold, Redstone, Lapis Lazuli, Diamond, and Emerald ore than the Overworld, in stone and deepslate forms, along with Amethyst Geodes and patches of Dirt, Gravel, Granite, Diorite, Andesite, and Tuff. It is always midday there.

Nether Mining has Nether Gold Ore, Nether Quartz Ore, Ancient Debris, Magma Blocks, and Soul Sand. As in the Nether, one block of travel equals eight in the Overworld, water evaporates, and Respawn Anchors work.

End Mining has Prismarine veins mixed with Prismarine Bricks and Dark Prismarine, along with Sea Lanterns and Pearl Blocks. A Pearl Block mined with a pickaxe drops 1 to 4 Ender Pearls, plus up to one more per Fortune level, or drops itself with Silk Touch.

Rules

These rules apply in every mining dimension.

• No mobs spawn, and hostile mobs can't enter. A Wither you build there is the exception.
• Beds don't work, and they don't explode.
• Raids can't start.
• If you log in inside solid blocks, you move up to the first open space, or to the Overworld spawn if there is none.

Configuration

config/egmd-common.toml has one setting, which you can also change from the mod's config screen.

Setting	Default	Range	Meaning
portalSearchRadius	128	16 to 512	Radius in blocks to search for an existing portal before building one. Nether Mining divides it by 8, with a minimum of 16. Large values cause a lag spike the first time a portal searches an unexplored area.