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IFR25KU: The Institute of Fairy Research 2025 Kakera UnofficialMinecraft mod for 1.21.1

A Minecraft mod that presents a possible world set in the MirageFairy universe.

client and servernewest supported release 1.21.1TechnologyAdventureEquipmentGame Mechanics
Latest version
31.32.1+neoforge
Minecraft
1.21.1
Java
Java 21+
Loaders
Fabric, NeoForge
Licence
Apache-2.0
Downloads
1.7k
Updated
7 d ago
Available on
Modrinth
Space NodeOur hosting

Host IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial servers

One click and IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Fabric
  • 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 IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge21+declared8 Aug 2024

Download

From IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial’s own host. Nothing is re-hosted here.

Browse 41 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • NeoForge

    31.32.1+neoforge · 12 Oct 2026 · ifr25ku-31.32.1+neoforge.jar

    Get NeoForge

  • Fabric

    31.32.1+fabric · 12 Oct 2026 · ifr25ku-31.32.1+fabric.jar

    Get Fabric

Most recently published release

31.32.1+neoforgerelease12 Oct 2026

ifr25ku-31.32.1+neoforge.jar · 5.7 MB · for 1.21.1 · NeoForge

Download this release
cef3812f83c3…
Older versions24
  • 31.32.1+fabric12 Oct 20261.21.15.5 MB488bcdc8bc81…Get
  • 31.31.2+neoforge11 Mar 20261.21.15.1 MB99 downloads656c9ad5c4b9…Get
  • 31.31.2+fabric11 Mar 20261.21.15.0 MB46 downloads65d17d82482c…Get
  • 31.31.1+neoforge11 Mar 20261.21.15.1 MB8 downloadsb06fcd7d191a…Get
  • 31.31.1+fabric11 Mar 20261.21.15.0 MB13 downloads585453a0d869…Get
  • 31.31.0-alpha.4+neoforge30 Dec 20251.21.14.8 MB135 downloads8e2dbee1e0a1…Get
  • 31.31.0-alpha.4+fabric30 Dec 20251.21.14.7 MB36 downloads8455b41ee13b…Get
  • 31.31.0-alpha.3+neoforge30 Dec 20251.21.14.8 MB7 downloadsd1ae69fd5759…Get
  • 31.31.0-alpha.3+fabric30 Dec 20251.21.14.7 MB16 downloads9e4115628f08…Get
  • 31.31.0-alpha.2+neoforge30 Dec 20251.21.14.8 MB22 downloadsfb407d34b8ac…Get
  • 31.31.0-alpha.2+fabric30 Dec 20251.21.14.7 MB16 downloadsa349277c8645…Get
  • 27.31.0-alpha.1+neoforge30 Dec 20251.21.14.8 MB21 downloads0dbd5bcf13e1…Get
  • 27.31.0-alpha.1+fabric30 Dec 20251.21.14.7 MB13 downloads1f2b9d7bc63a…Get
  • 27.30.0+neoforge30 Nov 20251.21.14.8 MB63 downloads68b42d94966f…Get
  • 27.30.0+fabric30 Nov 20251.21.14.7 MB32 downloads9b8261784ad2…Get
  • 27.29.0+neoforge17 Nov 20251.21.14.6 MB25 downloads73e6e6e33d91…Get
  • 27.29.0+fabric17 Nov 20251.21.14.5 MB18 downloadsb818a84df55f…Get
  • 27.28.0+neoforge7 Nov 20251.21.14.5 MB57 downloads664bc81d930a…Get
  • 27.28.0+fabric7 Nov 20251.21.14.5 MB24 downloads6145930da96a…Get
  • 27.27.1-alpha.1+neoforge4 Nov 20251.21.14.5 MB25 downloads630e72847696…Get
  • 27.27.1-alpha.1+fabric4 Nov 20251.21.14.4 MB22 downloads1baa71fde0ba…Get
  • 27.27.0+neoforge3 Nov 20251.21.14.5 MB32 downloads2aa47909f406…Get
  • 27.27.0+fabric3 Nov 20251.21.14.4 MB23 downloads13d822fd351f…Get
  • 26.26.0+neoforge3 Nov 20251.21.14.5 MB26 downloadsd145011b956a…Get

Dependencies

What IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficialdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Fabric APIRequired. Lightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.Cloth Config APIRequired. Configuration Library for Minecraft ModsFabric Language KotlinRequired. This is a mod that enables usage of the Kotlin programming language for Fabric mods.Architectury APIRequired. An intermediary api aimed to ease developing multiplatform mods.Kotlin for ForgeRequired. Adds a Kotlin language loader and provides some optional utilities.oωo (owo-lib)Required. A general utility, GUI and config library for modding on Fabric and QuiltTerraBlenderRequired. A library mod for adding biomes in a simple and compatible manner!Forgified Fabric APIRequired. Fabric API implemented on top of NeoForgeRoughly Enough Items (REI)Optional. Clean and Customizable. Alternative to Just Enough Items/JEI.EMIOptional. A featureful and accessible item and recipe viewer

Frequently asked

Does IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial 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 IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial 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 IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial support?

Fabric, 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 IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial?

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.

What does IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial need to run?

It declares Fabric API, Cloth Config API, Fabric Language Kotlin, Architectury API, Kotlin for Forge, oωo (owo-lib), TerraBlender and Forgified Fabric API as required, so those have to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial under?

Apache-2.0, 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 IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial?

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 IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial 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. 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.

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.

Details from Modrinth, where the author last updated it on 12 Oct 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .