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data pack

Lost LibrariesMinecraft data pack for 1.21.4

Ancient libraries lay buried, forgotten by time. Magic books are abundant.

server onlynewest supported 1.21.4AdventureWorldgen
Latest version
1.1.2+mod
Loaders
Data pack, Quilt, NeoForge, Forge and 1 more
Licence
LicenseRef-All-Rights-Reserved
Downloads
63.5k
Updated
20 mo ago
Available on
Modrinth
Space NodePartner

Host Lost Libraries servers

One click and Lost Libraries is installed with the right loader, on hardware built for it.

  • 1.21.4
  • 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 Lost Libraries declares support for, newest first, with the Java runtime that version needs.

Other data packs
MinecraftThroughJavaEvidenceReleased
1.21.4Data pack, Quilt, NeoForge, Forge, Fabric21+declared3 Dec 2024
1.21.3Fabric, Quilt, NeoForge, Forge, Data pack21+declared23 Oct 2024
1.21.2Fabric, Quilt, NeoForge, Forge, Data pack21+declared22 Oct 2024
1.21.1Data pack, Fabric, Forge, NeoForge, Quilt21+declared8 Aug 2024
1.21Data pack, Quilt, NeoForge, Forge, Fabric21+declared13 Jun 2024
1.20.2Data pack, Quilt, NeoForge, Forge, Fabric17+declared20 Sept 2023
1.20.1Data pack, Quilt, NeoForge, Forge, Fabric17+declared12 Jun 2023
1.20Quilt, Fabric, Forge, NeoForge, Data pack17+declared2 Jun 2023

Download

From Lost Libraries’s own host. Nothing is re-hosted here.

1.1.2+modrelease25 Jan 2025

lost-libraries-1.1.2.jar · 0.0 MB · for 1.21, 1.21.1, 1.21.2, 1.21.3

Download latest
c4c517fd3b44
Older versions5
  • 1.1.225 Jan 20251.21, 1.21.1, 1.21.2, 1.21.3, 1.21.40.0 MB1.3k downloads93d1ff810961Get
  • 1.1.1+mod26 Sept 20231.20, 1.20.1, 1.20.20.0 MB50.0k downloadsb4a3be93f18eGet
  • 1.1.126 Sept 20231.20, 1.20.1, 1.20.20.0 MB2.1k downloads9afa1da0ffefGet
  • 1.1+mod8 Aug 20231.20, 1.20.10.0 MB1.1k downloads3a0a69c19650Get
  • 1.18 Aug 20231.20, 1.20.10.0 MB350 downloadse91caec1e4c3Get

Frequently asked

Does Lost Libraries work on Minecraft 1.21.4?

Yes. 1.21.4 is the newest Minecraft version Lost Libraries 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 Lost Libraries support?

Everything the author has declared, from 1.20 up to 1.21.4. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Lost Libraries on the client or the server?

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

Which loader does Lost Libraries need?

Data pack, Quilt, NeoForge, Forge, Fabric. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Lost Libraries?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the data pack itself.

What licence is Lost Libraries 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 Lost Libraries?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the data pack and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Lost Libraries safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

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? .