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data pack

Light It UpMinecraft data pack for 1.21.9

A small, lightweight Datapack that lets you craft Light Blocks that you can change the brightness of

server onlynewest supported 1.21.9UtilityAdventureGame MechanicsDecoration
Latest version
1.4.0+mod
Works with
Quilt, NeoForge, Forge, Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
9.0k
Updated
11 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Light It Up servers

Deploy a server with Light It Up already added to the world, on hardware built for it.

  • 1.21.9
  • Data pack
  • Quilt
  • NeoForge
  • Forge
  • One click install
  • Version matched
  • Automatic backups
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Light It Up declares support for, newest first, with the Java runtime that version needs.

Other data packs
MinecraftThroughJavaEvidenceReleased
1.21.9Data pack, Quilt, NeoForge, Forge, Fabric21+declared30 Sept 2025
1.21.8Fabric, Quilt, NeoForge, Forge, Data pack21+declared17 Jul 2025
1.21.7Fabric, Quilt, NeoForge, Forge, Data pack21+declared30 Jun 2025
1.21.6Fabric, Quilt, NeoForge, Forge, Data pack21+declared17 Jun 2025
1.21.5Fabric, Quilt, NeoForge, Forge, Data pack21+declared25 Mar 2025
1.21.4Fabric, Quilt, NeoForge, Forge, Data pack21+declared3 Dec 2024
1.21.1Data pack, Fabric, Forge, NeoForge, Quilt21+declared8 Aug 2024
1.21Data pack, Quilt, NeoForge, Forge, Fabric21+declared13 Jun 2024
1.20.4Fabric, Quilt, NeoForge, Forge, Data pack17+declared7 Dec 2023
1.20.3Fabric, Quilt, NeoForge, Forge, Data pack17+declared4 Dec 2023
1.20.2NeoForge, Quilt, Forge, Fabric, Data pack17+declared20 Sept 2023
1.20.1Data pack, Quilt, NeoForge, Forge, Fabric17+declared12 Jun 2023
1.20Fabric, Quilt, NeoForge, Forge, Data pack17+declared2 Jun 2023
1.19.4NeoForge, Fabric, Data pack, Forge, Quilt17+declared14 Mar 2023

Download

From Light It Up’s own host. Nothing is re-hosted here.

1.4.0+modrelease2 Oct 2025

light-it-up-atlasplays-1.4.0.jar · 0.0 MB · for 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9

Download latest
eaccae33e9aa
Older versions8
  • 1.4.02 Oct 20251.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.90.0 MB280 downloads616c4fb96c72Get
  • 1.3.0+mod18 Jun 20251.21.5, 1.21.60.0 MB421 downloads8a4c61d05cb2Get
  • 1.3.017 Jun 20251.21.5, 1.21.60.0 MB138 downloads46fd348e5ba2Get
  • 1.2.0+mod19 Dec 20241.21.1, 1.21.4, 1.21.50.0 MB3.5k downloadsd7b246e8153fGet
  • 1.2.019 Dec 20241.21.4, 1.21.50.0 MB375 downloads1fb22be1b5a9Get
  • 1.1.0+mod31 Jul 20241.21, 1.21.10.0 MB2.1k downloadsb911f201a115Get
  • 1.1.028 Jun 20241.21, 1.21.10.0 MB448 downloadsa086af7fa1f2Get
  • 1.0.023 Dec 20231.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3 +1 more0.0 MB431 downloads4bd5040afbf3Get

Frequently asked

Does Light It Up work on Minecraft 1.21.9?

Yes. 1.21.9 is the newest Minecraft version Light It Up declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Light It Up support?

Everything the author has declared, from 1.19.4 up to 1.21.9. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Light It Up on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

What licence is Light It Up under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Light It Up?

Data packs install per world: put the downloaded file in that world's datapacks folder and run /reload, or add it when creating the world. No loader is involved. On a server, the world folder lives next to the server jar.

Where do I download Light It Up safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .