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Alex's Caves (Unofficial Port)Minecraft mod for 1.21.1

Explore five new rare cave biomes hidden under the surface of the Overworld...

client and servernewest supported 1.21.1MobsWorldgen
Latest version
2.0.10
Minecraft
1.21.1
Loader
NeoForge
Licence
LGPL-3.0-only
Downloads
226.3k
Updated
5 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Alex's Caves (Unofficial Port) servers

One click and Alex's Caves (Unofficial Port) is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
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Minecraft versions

Every version Alex's Caves (Unofficial Port) declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Alex's Caves (Unofficial Port)’s own host. Nothing is re-hosted here.

2.0.10release25 Apr 2026

alexscaves-2.0.10.jar · 71.4 MB · for 1.21.1

Download latest
5d933f9276ec
Older versions7
  • 2.0.924 Jan 20261.21.171.4 MB111.4k downloads2b26c57e0a67Get
  • 2.0.819 Jan 20261.21.171.4 MB3.9k downloadsa1daf0d28735Get
  • 2.0.717 Jan 20261.21.171.4 MB916 downloads33a3ed9d8deaGet
  • 2.0.614 Jan 20261.21.171.4 MB659 downloadsd17dcaf4f2efGet
  • 2.0.510 Jan 20261.21.171.4 MB242 downloads03f476e5a966Get
  • 2.0.410 Jan 20261.21.171.4 MB53 downloads1c47e5e1fe5cGet
  • 2.0.34 Jan 20261.21.171.3 MB140 downloads6550768f38caGet

Frequently asked

Does Alex's Caves (Unofficial Port) work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Alex's Caves (Unofficial Port) declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Do I need to install Alex's Caves (Unofficial Port) on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Alex's Caves (Unofficial Port) support?

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 Alex's Caves (Unofficial Port)?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Alex's Caves (Unofficial Port) under?

LGPL-3.0-only, 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 Alex's Caves (Unofficial Port)?

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 Alex's Caves (Unofficial Port) 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? .