Source-checkedQuality of life & UI

Lucium

by exaptations · for Minecraft

Fixes and utilities originating in Yttr.

4.7KDownloads
3 mo agoLast updated
MITLicense
Fabric · QuiltLoaders

About Lucium

From Modrinth

Fixes and utilities originating in Yttr.

> Lucium was the proposed name for an alleged new element found by chemist Prosper Barrière in 1896 in the mineral monazite. Later, William Crookes confirmed that the new element was actually an impure sample of yttrium.

From Wikipedia, the free encyclopedia


Lucium is a small collection of "no-brainer" utilities originating in Yttr that I didn't want to tangle up into Fabrication. It's especially useful in dev environments and for debugging. (Fabrication currently doesn't work very well in dev environments.) For that reason, it's also available via the Sleeping Town Maven:

repositories {
	maven {
		url 'https://repo.sleeping.town'
		content {
			includeGroup 'com.unascribed'
		}
	}
}

dependencies {
	modRuntimeOnly "com.unascribed:lucium:1.1"
}

You can JIJ Lucium by wrapping it in include() if any of its fixes are important for your mod, such as the particle fix. Yttr does this because its Continuous Platforms look very bad without the particle fix.

Features

Fancy/Fast Particles Fix

Lucium will render particles in two passes, similar to pre-1.15 versions, allowing particles to render behind translucent blocks even on Fancy and Fast graphics. Compatible with Sodium.

Debug World Fix

Lucium will fix the vanilla debug world to include all modded blockstates.

Customizable F3 Screen

Use Page Up and Page Down to tab through entries in the vanilla F3 screen. Home and End switch between the left and right sides, respectively. Press Delete to collapse the highlighted group of entries, and Insert to bring back the nearest one.

Smaller F3 Screen

Makes the F3 screen half the size, if the GUI scale is at least 3. (⅔ on GUI scales not divisible by 2. No effect on GUI scales not divisible by 3 or 2 — sorry, GUI Scale 5 users, but I can't do much with a prime number.)

More Tags In F3

Shows biome and entity tags in F3.

Commands

/l:dtp

Only available in debug worlds. Specify a blockstate to teleport there.

/l:goto

Requires operator or cheats. Teleports you to another dimension, putting you in a "logical" location automatically. Never /setblock ~ ~ ~ nether_portal again.

/l:devsetup

Runs the following commands:

  • /gamerule doTraderSpawning false
  • /gamerule doPatrolSpawning false
  • /gamerule doWeatherCycle false
  • /gamerule doDaylightCycle false
  • /time set 6000
  • /weather clear 1000000

/l:wireframe

Requires Creative or Spectator mode. Switches the game's rendering to wireframe, for render debugging.

/l:profiler

Opens a custom view for the vanilla profiler that's much more useful and easier to use.

Highlights

From source data

Game versions

Supports 3 Minecraft versions, the newest being 1.20.1.

Loaders

Runs on Fabric and Quilt.

Footprint

Rated a light load on a server.

Lucium on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Optional on the server
Server type needed
Fabric, Quilt
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
2.0.3+1.20.1, released 2026-08-09

Game versions by loader

LoaderGame versionsNewest
Fabric1.19.1 to 1.20.1 (3 versions)1.20.1
Quilt1.19.1 to 1.19.2 (2 versions)1.19.2

From 3 recorded builds of Lucium.

Recent builds

BuildReleasedGame versionsLoaders
2.0.3+1.20.12026-08-091.20.1Fabric
1.5-pre1 alpha2022-12-311.19.2Fabric, Quilt
1.1 beta2022-08-171.19.1 to 1.19.2 (2 versions)Fabric, Quilt

Dependencies

  • Required: modrinth project BMsWWSPQ (modrinth, not in our catalogue)

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Lucium on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Quality of life & UI

Small conveniences, tweaks and interface improvements players notice straight away.

Works on a server

From source side support

Modrinth lists server-side support for Lucium as optional: it can run on a server, but isn’t required there.

Compatibility

Game
Minecraft
Loaders
FabricQuilt
Runs on
Serveroptional on the server
Game versions
1.20.1 and 2 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-02Open ↗
  • ✓Authorexaptations, as published on Modrinth
  • ✓LicenseMITFree

Lucium, answered

Generated from the mod’s own source data.

Do my players need to install Lucium?

Modrinth lists server-side support for Lucium as optional: it can run on a server, but isn’t required there.

Which loaders does it support?

Fabric and Quilt.

Is it free?

Yes. Lucium is free to download from Modrinth. Its license is MIT.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Lucium on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add Lucium in one click.