ModsFinder

Deep Dark Expanded

by downloadableduck

Deep Dark Expanded, a Fabric world generation mod for 1.21.11, adds a dimension reached through a portal built inside an Ancient City.

FabricClient and serverMIT LicenseOpen source1.21.11

What it does

The mod extends the ancient structures found in the Deep Dark. Its new items and loot tables give players more reason to explore those structures, and a portal inside one of them leads into a separate Deep Dark Dimension filled with sculk. The portal is lit with a Warden Heart placed in its center, and clearing the sculk off the portal removes the light.

The mod uses the Custom Portal API to build its portal. Installation covers the server and each player's game. The source code and issue tracker are public, and the code is released under the MIT License, which makes the mod open source. Only the 1.21.11 build exists, published for Fabric.

Key features

  1. A new Deep Dark Dimension

    A separate dimension filled with sculk and ancient city material, reached through a lit portal.

  2. Sculk Sword

    Crafted from an Ancient Handle and two Echo Shards, it summons a Warden blast on right click that damages nearby enemies.

  3. Echo Stone

    Consuming it grants regeneration, speed and absorption for a short time.

  4. Warden Heart

    Placed in the middle of an Ancient City portal, it lights the portal and opens the way into the dimension.

Compatibility

Latest build for each game version and loader.

1.21.111.0.1-1.21.11
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Deep Underground is a Fabric mining dimension for 1.21.1, client and server, open source under the MIT License. Secret of the Ancient City: Echo Dimension is a Fabric mod for 1.21 – 1.21.3, also client and server and MIT licensed. Ethrilic Dimension is a Fabric server-side only mod for 1.21.8 – 1.21.11 and is not open source.

ModLoadersGame versionsEnvironmentUpdated
Deep Dark ExpandedFabric1.21.11Client and server2026-01-14
Deep Underground (Mining Dimension)Fabric1.21.1Client and server2026-03-25
Secret of the Ancient City: Echo DimensionFabric1.21 – 1.21.3Client and server2026-07-13
Ethrilic DimensionFabric1.21.8 – 1.21.11Server-side only2026-04-11

Questions

Which loader does Deep Dark Expanded support?

Only Fabric. The 1.21.11 build is published for Fabric alone, with no Forge or NeoForge files.

Does the server need Deep Dark Expanded?

Yes. Every player and the server need a copy of the mod.

Does Deep Dark Expanded require another mod?

The mod uses the Custom Portal API for its portal, so that library is needed alongside it.

In the catalog

Deep Dark Expanded is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 19,862 mods support Minecraft 1.21.11.

World generation mods8,515Fabric modsMods for 1.21.1119,862

More from downloadableduck

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Horizon1.21.9 – 26.1.2Remove Reloading Bar1.21 – 26.1.2Scalable1.21.11 – 26.3Mod Menu for Neoforge26.1 – 26.1.2Coordinates1.21.6 – 26.3/fart1.21.5 – 26.3

Similar mods

Biomes O' Plenty1.7.10 – 26.3Terralith1.18.2 – 26.3YUNG's Better Nether Fortresses1.18.2 – 26.1.2Dungeons and Taverns1.19 – 26.3Yeetus Experimentus1.18.2 – 26.3Towns and Towers1.18.2 – 26.3

What the author says

Adds multiple new items to the deep dark as well as improving the loot tables for the ancient cities. Includes a new dimension which can be accessed by lighting the portal in the Ancient City with a Warden Heart. -A new Dimension: The Deep Dark Dimension, which is full of sculk and ancient cities ripe for looting.
downloadableduck, on the Modrinth page

Official listing

Owner
downloadableduck
Published
2026-01-13
Updated on Modrinth
2026-01-14
Facts verified
2026-10-15

Tags

AdventureEquipmentWorld generation
Open on ModrinthCompare