mod
[LC²H] | Lost Cities: MultithreadedMinecraft mod for 1.21.1
LC²H massively speeds up The Lost Cities with smoother terrain, safer concurrent generation and full C²ME/DH compatibility :]
- Latest version
- lc2h-omni-4.2.5-LTS.jar
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loaders
- Forge, NeoForge
- Licence
- not stated
- Downloads
- 2.2M
- Updated
- 1 mo ago
- Available on
- CurseForge
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version [LC²H] | Lost Cities: Multithreaded declares support for, newest first, with the Java runtime that version needs.
Download
From [LC²H] | Lost Cities: Multithreaded’s own host. Nothing is re-hosted here.
For Minecraft 1.21.1
Choose the loader you use before downloading.
- Choose file on publisher ↗
Forge, NeoForge
lc2h-omni-4.2.5-LTS.jar · 2 Oct 2026
Multiple loaders are listed; verify the file before downloading.
Most recently published release
lc2h-omni-4.2.5-LTS.jar · 3.8 MB · for 1.21.1, 1.20.1 · Forge, NeoForge
90822d40b14c…Older versions21Hide older versions
- lc2h-omni-4.2.4-LTS.jar20 Sept 20261.21.1, 1.20.13.8 MB
20845fe88572…Choose file on publisher ↗ - lc2h-omni-4.2.3-LTS.jar15 Sept 20261.21.1, 1.20.13.8 MB
fa915820367a…Choose file on publisher ↗ - lc2h-omni-4.2.2-LTS.jar8 Sept 20261.21.1, 1.20.13.8 MB
be45653552a1…Choose file on publisher ↗ - lc2h-omni-4.2.1-LTS.jar7 Sept 20261.21.1, 1.20.13.8 MB
bc78a8c8c22e…Choose file on publisher ↗ - lc2h-omni-4.2.0-LTS.jar7 Sept 20261.21.1, 1.20.13.8 MB
710962720308…Choose file on publisher ↗ - lc2h-4.1.2-RELEASE.jar1 Sept 20261.20.12.0 MB
654890e6ad2f…Get - lc2h-4.1.1-BETA.jar30 Aug 20261.20.12.0 MB
5e3b06af2c90…Get - lc2h-4.1.0-BETA.jar29 Aug 20261.20.12.0 MB
5c7e4cc961cc…Get - lc2h-4.0.0-BETA.jar21 Aug 20261.20.11.9 MB
2c8d08452292…Get - lc2h-3.5.0.jar24 Apr 20261.20.11.2 MB
df308c8b2872…Get - lc2h-3.4.0.jar5 Apr 20261.20.11.1 MB
7eb8aba2c46a…Get - lc2h-3.3.0.jar7 Mar 20261.20.11.1 MB
151ecf267324…Get - lc2h-3.2.6.jar27 Feb 20261.20.11.0 MB
e6bc38a37db0…Get - lc2h-3.2.5.jar22 Feb 20261.20.11.0 MB
24f5677f1019…Get - lc2h-3.2.4.jar14 Feb 20261.20.11.0 MB
bc4abda469f3…Get - lc2h-3.2.3.jar27 Jan 20261.20.11.0 MB
a8779edb901e…Get - lc2h-3.2.2.jar26 Jan 20261.20.11.0 MB
c9cea4dc0fea…Get - lc2h-3.2.1-HOTFIX.jar20 Jan 20261.20.10.9 MB
b5d8cfb8b9b4…Get - lc2h-3.2.0.jar20 Jan 20261.20.10.9 MB
56069f1af272…Get - lc2h-3.1.0.jar17 Jan 20261.20.10.9 MB
c83fed8f8604…Get - lc2h-3.0.0.jar4 Jan 20261.20.10.6 MB
8c41f0644f8d…Get
Frequently asked
Does [LC²H] | Lost Cities: Multithreaded work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version [LC²H] | Lost Cities: Multithreaded 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 [LC²H] | Lost Cities: Multithreaded support?
Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.
Which platform or loader does [LC²H] | Lost Cities: Multithreaded support?
Forge, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for [LC²H] | Lost Cities: Multithreaded?
Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.
How do I install [LC²H] | Lost Cities: Multithreaded?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod 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 [LC²H] | Lost Cities: Multithreaded safely?
Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available 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? .