
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
- Latest version
- 1.4.0+mod
- Minecraft
- 1.19.4 to 1.21.9
- Works with
- Quilt, NeoForge, Forge, Fabric
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 9.0k
- Updated
- 11 mo ago
- Available on
- Modrinth
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
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.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.9 | Data pack, Quilt, NeoForge, Forge, Fabric | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 3 Dec 2024 |
| 1.21.1 | Data pack, Fabric, Forge, NeoForge, Quilt | 21+ | declared | 8 Aug 2024 |
| 1.21 | Data pack, Quilt, NeoForge, Forge, Fabric | 21+ | declared | 13 Jun 2024 |
| 1.20.4 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 7 Dec 2023 |
| 1.20.3 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 4 Dec 2023 |
| 1.20.2 | NeoForge, Quilt, Forge, Fabric, Data pack | 17+ | declared | 20 Sept 2023 |
| 1.20.1 | Data pack, Quilt, NeoForge, Forge, Fabric | 17+ | declared | 12 Jun 2023 |
| 1.20 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 2 Jun 2023 |
| 1.19.4 | NeoForge, Fabric, Data pack, Forge, Quilt | 17+ | declared | 14 Mar 2023 |
Download
From Light It Up’s own host. Nothing is re-hosted here.
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
eaccae33e9aa…Older versions8Hide older versions
- 1.4.02 Oct 20251.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.90.0 MB280 downloads
616c4fb96c72…Get - 1.3.0+mod18 Jun 20251.21.5, 1.21.60.0 MB421 downloads
8a4c61d05cb2…Get - 1.3.017 Jun 20251.21.5, 1.21.60.0 MB138 downloads
46fd348e5ba2…Get - 1.2.0+mod19 Dec 20241.21.1, 1.21.4, 1.21.50.0 MB3.5k downloads
d7b246e8153f…Get - 1.2.019 Dec 20241.21.4, 1.21.50.0 MB375 downloads
1fb22be1b5a9…Get - 1.1.0+mod31 Jul 20241.21, 1.21.10.0 MB2.1k downloads
b911f201a115…Get - 1.1.028 Jun 20241.21, 1.21.10.0 MB448 downloads
a086af7fa1f2…Get - 1.0.023 Dec 20231.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3 +1 more0.0 MB431 downloads
4bd5040afbf3…Get
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.
Is this information wrong or missing something? .

