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Nautilus & Spears | Mounts of MayhemMinecraft mod for 1.21.1

This is a mod in which I added drop Mounts of Mayhem to the old versions of minecraft

client and servernewest supported 1.21.1AdventureMobsEquipment
Latest version
1.9.8
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
MIT
Downloads
26.6k
Updated
7 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Nautilus & Spears | Mounts of Mayhem servers

One click and Nautilus & Spears | Mounts of Mayhem is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • 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 Nautilus & Spears | Mounts of Mayhem declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From Nautilus & Spears | Mounts of Mayhem’s own host. Nothing is re-hosted here.

1.9.8release21 Feb 2026

mounts_of_mayhem-1.9.8-neoforge-1.21.1.jar · 1.0 MB · for 1.21.1

Download latest
c20ec904c54d…
Older versions14
  • 1.9.77 Dec 20251.21.11.0 MB3.3k downloads99de2d0ede60…Get
  • 1.9.629 Nov 20251.21.11.0 MB611 downloads581be470adab…Get
  • 1.9.56 Nov 20251.21.11.0 MB1.4k downloads58454d54e629…Get
  • 1.9.031 Oct 20251.21.10.5 MB282 downloads0c2becb50ae8…Get
  • 1.7.022 Oct 20251.21.10.2 MB665 downloads204a85a8910e…Get
  • 1.5.05 Oct 20251.21.10.2 MB1.3k downloads1348b9e26eda…Get
  • 1.4.35 Oct 20251.21.10.2 MB63 downloads92b979b2a77a…Get
  • 1.4.2(BUGGED)3 Oct 20251.20.10.2 MB10.7k downloadse08ceebd882e…Get
  • 1.4.23 Oct 20251.21.10.2 MB436 downloads0354a8858c1b…Get
  • 1.4.12 Oct 20251.21.10.2 MB182 downloads1b255374b0b4…Get
  • 1.4.030 Sept 20251.21.10.2 MB205 downloads69a1158a5fd3…Get
  • 1.3.030 Sept 20251.21.10.2 MB66 downloads1631614746e1…Get
  • 1.2.028 Sept 20251.21.10.2 MB72 downloads0b7ba2f501ea…Get
  • 1.0.028 Sept 20251.21.158 KB52 downloads2393c7f4bf8d…Get

Frequently asked

Does Nautilus & Spears | Mounts of Mayhem work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Nautilus & Spears | Mounts of Mayhem 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 Nautilus & Spears | Mounts of Mayhem 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.

Do I need to install Nautilus & Spears | Mounts of Mayhem 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 Nautilus & Spears | Mounts of Mayhem 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 Nautilus & Spears | Mounts of Mayhem?

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 Nautilus & Spears | Mounts of Mayhem under?

MIT, 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 Nautilus & Spears | Mounts of Mayhem?

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 Nautilus & Spears | Mounts of Mayhem 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.

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

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? .