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modpack

Castaway - Lost in the SeasMinecraft modpack for 1.21.1

Dive into the unknown, conquer the seas, defeat powerful foes, and uncover ancient secrets across ocean and land.

newest supported release 1.21.1MultiplayerAdventure And RpgExploration
Latest version
Castaway MC 1.21.1-5.8.0
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
not stated
Downloads
41.9k
Updated
1 mo ago
Available on
CurseForge
Space NodeOur hosting

Host Castaway - Lost in the Seas servers

One click and Castaway - Lost in the Seas is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click modpack install
  • Dependencies handled
  • Tuned startup flags
  • 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 Castaway - Lost in the Seas declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Castaway - Lost in the Seas’s own host. Nothing is re-hosted here.

Browse 42 indexed releases

Most recently published release

Castaway MC 1.21.1-5.8.0release6 Oct 2026

Castaway MC 1.21.1-5.8.0.zip · 4.1 MB · for 1.21.1 · NeoForge

Download this release
7ac78f910845…
Older versions24
  • Castaway MC 1.21.1-5.7.010 Sept 20261.21.14.1 MBb94f5bbb9283…Get
  • Castaway MC 1.21.1-5.6.016 Jul 20261.21.14.1 MB28 downloadse8218ec603f1…Get
  • Castaway MC 1.21.1-5.5.05 Jul 20261.21.14.1 MB128 downloads07f0ed203026…Get
  • Castaway MC 1.21.1-5.4.026 Jun 20261.21.14.1 MB49 downloads7567c663602c…Get
  • Castaway MC 1.21.1-5.3.030 May 20261.21.14.1 MB251 downloadsb91e342a1091…Get
  • Castaway MC 1.21.1-5.2.024 May 20261.21.14.1 MB87 downloadsce8906a3ec70…Get
  • Castaway MC 1.21.1-5.1.025 Apr 20261.21.14.1 MB410 downloads79f996a2dda5…Get
  • Castaway MC 1.21.1-5.0.018 Apr 20261.21.14.1 MB101 downloads0b34d36dc526…Get
  • Castaway MC 1.21.1-4.9.02 Apr 20261.21.14.0 MB41 downloads1a1a48e9aacb…Get
  • Castaway MC 1.21.1-4.8.020 Mar 20261.21.14.0 MB39 downloadsf8a864e01747…Get
  • Castaway MC 1.21.1-4.7.013 Mar 20261.21.14.0 MB181 downloadsd3f4c6aad489…Get
  • Castaway MC 1.21.1-4.6.09 Mar 20261.21.14.0 MB49 downloadsf6e196ca8299…Get
  • Castaway MC 1.21.1-4.5.06 Mar 20261.21.14.0 MB54 downloadsc6e3c3796bf3…Get
  • Castaway MC 1.21.1-4.4.028 Feb 20261.21.14.0 MB72 downloads24b5d1ccfb2f…Get
  • Castaway MC 1.21.1-4.3.023 Feb 20261.21.14.0 MB73 downloads78eae32d44d6…Get
  • Castaway MC 1.21.1-4.2.022 Feb 20261.21.14.0 MB91 downloads52c617467725…Get
  • Castaway MC 1.21.1-4.1.018 Feb 20261.21.14.0 MB79 downloads3610976aa97d…Get
  • Castaway MC 1.21.1-4.0.012 Feb 20261.21.14.0 MB55 downloads20f02f914bd4…Get
  • Castaway MC 1.21.1-3.9.08 Feb 20261.21.14.0 MB76 downloadsf2a102021b9c…Get
  • Castaway MC 1.21.1-3.8.01 Feb 20261.21.14.0 MB72 downloadsa3b6f9c9618e…Get
  • Castaway MC 1.21.1-3.7.029 Jan 20261.21.14.0 MB61 downloads18fc83eb1fe9…Get
  • Castaway MC 1.21.1-3.6.021 Jan 20261.21.14.0 MB1.0k downloadsb6f4e2f1d6a4…Get
  • Castaway MC 1.21.1-3.5.015 Jan 20261.21.14.0 MB1.1k downloadsd2019de5298a…Get
  • Castaway MC 1.21.1-3.4.010 Jan 20261.21.14.0 MB369 downloads7350b70f9e76…Get

Frequently asked

Does Castaway - Lost in the Seas work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Castaway - Lost in the Seas 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 platform or loader does Castaway - Lost in the Seas 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 Castaway - Lost in the Seas?

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 Castaway - Lost in the Seas?

Use a launcher that imports packs, such as Prism Launcher, the Modrinth App or the CurseForge app, and open the pack file with it. The launcher installs the right loader and mods for you; installing a pack's mods by hand is the error-prone way.

Where do I download Castaway - Lost in the Seas 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.

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Details from CurseForge, where the author last updated it on 6 Oct 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

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