CurseForge · Minecraft mod

Upgrade Underground

A Cave-Overhaul mod that adds new biomes, tools, structures, items, and enhances QoL by adding small tweaks

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Upgrade Underground release should I use?

Updated today

Latest stable file upgrade_underground-1.4.3-forge-1.20.1.jar

Game version 1.20.1

Loader Forge

Upgrade Underground upgrade_underground-1.4.3-forge-1.20.1.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is Upgrade Underground required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release Forge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does Upgrade Underground upgrade_underground-1.4.3-forge-1.20.1.jar need?

upgrade_underground-1.4.3-forge-1.20.1.jar. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add Upgrade Underground without breaking your instance.

Built for Upgrade Underground upgrade_underground-1.4.3-forge-1.20.1.jar. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use upgrade_underground-1.4.3-forge-1.20.1.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

This file does not list any required mods. Do not add a library just because a different file uses it.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside upgrade_underground-1.4.3-forge-1.20.1.jar. It opens that exact file at the source.

About this project

What does Upgrade Underground add?

Upgrade Underground is a lightweight Vanilla+ cave-overhaul mod designed to add more subterranian content. It introduces an new biome, essential underground survival items, deeper progression mechanics, and unique structures to discover while mining.

Lichen Garden

A frequent underground biome overflowing with life.

Lichen Vegetation: Lichen Sprouts, Tall Lichen Sprouts, and Lichen Mushrooms.

Lichen Wood: Chop down Lichen Trees to gather exclusive Lichen Wood and Lichen Leaves for building.

Glow Lichen Cap: A handy early-game helmet made from a Leather Helmet, a Lichen Mushroom, and 2 Lichen Sprouts. It provides 1 Armor and acts as a portable light source (Level 6 light in a 3x3x3 area).

Lichen Mushrooms: A new cave food source. Cook them to save yourself from eating rotten flesh! They smelt faster, though they provide low saturation.

Ink Bottle: Crafted with 1 Bottle and 1 Squid Ink. Throw it at players to inflict Blindness in a 4x4 radius.

Glow Ink Bottle: Crafted with 1 Bottle and 1 Glow Squid Ink. Throw it anywhere to create a temporary light source.

Ores & Materials Expansion

Anthracite: A rarer, deep-slate tier variant of normal coal. It takes longer to find but smelts 16 items per piece.

Underground Structures

Keep your eyes open while exploring. You can now stumble upon two small structures:

Abandoned Cave Camp: An abandoned camp that has a chance to generate exclusive loot

- Lichen Hut: A small abandoned shelter containing starter loot. High chance to find Coal, Torches, Anthracite, Lichen Mushrooms, and even enchanted Enchanted Axes or Pickaxes.

- Lost Supplements: A few chests and barrels laying around. Contain mid tier loot.

Project description from CurseForge.

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