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Fiw BossesMinecraft mod for 1.21.11

A data-driven custom boss framework for Forge, NeoForge and Fabric Define multi-phase bosses and minions with configurable abilities entirely through JSON no coding, no restarts.

server onlynewest supported 1.21.11UtilityAdventureMobsEquipment
Latest version
1.1.3
Minecraft
1.20.1 to 1.21.11
Java
Java 21+
Loaders
Fabric, NeoForge, Forge
Licence
GPL-3.0-only
Downloads
6.7k
Updated
3 d ago
Available on
Modrinth
Space NodeOur hosting

Host Fiw Bosses servers

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

  • 1.21.11
  • Fabric
  • NeoForge
  • Forge
  • 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 Fiw Bosses declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric, NeoForge, Forge21+declared9 Dec 2025
1.21.8Fabric, Forge, NeoForge21+declared17 Jul 2025
1.21.1Fabric, Forge, NeoForge21+declared8 Aug 2024
1.20.1Fabric, NeoForge, Forge17+declared12 Jun 2023

Download

From Fiw Bosses’s own host. Nothing is re-hosted here.

1.1.3release23 Jul 2026

fiw-bosses-forge-1.20.1-1.1.3.jar · 1.8 MB · for 1.20.1

Download latest
eb3dabcb8edc…
Older versions10
  • 1.1.26 Jul 20261.20.11.8 MB166 downloadsa6aaf0e8386a…Get
  • 1.1.128 Jun 20261.20.11.7 MB97 downloadsf7e7be903737…Get
  • 1.1.024 Jun 20261.20.11.7 MB8 downloads51a0182f3413…Get
  • 1.0.97 Jun 20261.21.110.3 MB175 downloadsdd648f6be37a…Get
  • 1.0.829 May 20261.21.110.3 MB101 downloadsde974433e345…Get
  • 1.0.79 Apr 20261.21.10.3 MB45 downloadsc2e4c3c26478…Get
  • 1.0.513 Mar 20261.20.10.2 MB20 downloads78669a7151e3…Get
  • 1.0.312 Mar 20261.20.10.2 MB11 downloadse7bf9ea2aa6a…Get
  • 1.0.111 Mar 20261.20.10.1 MB17 downloads629b0b18818d…Get
  • 1.0.011 Mar 20261.20.10.1 MB18 downloads68cfee9f784a…Get

Frequently asked

Does Fiw Bosses work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Fiw Bosses 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 Fiw Bosses support?

Everything the author has declared, from 1.20.1 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Fiw Bosses on the client or the server?

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

Which platform or loader does Fiw Bosses support?

Fabric, NeoForge, Forge. 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 Fiw Bosses?

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 Fiw Bosses under?

GPL-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 Fiw Bosses?

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 Fiw Bosses 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.

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Details from Modrinth, where the author last updated it on 29 Sept 2026. 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? .