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Realms of Runeterra: A tale of Relative Dimensions

by Null Collective

Realms of Runeterra: A tale of Relative Dimensions adds a large custom dimension modeled on the Runeterra world of the League of Legends universe, with generated regions, rivers and megastructures.

ForgeNeoForgeClient and serverAll rights reserved1.21 – 1.21.11

What it does

The mod adds a new dimension of about 131,072 blocks per side, built from a procedurally generated world. A dynamic, area-limited noise system assigns biomes across the terrain, and caves and structures vary from region to region. Placement algorithms position larger megastructures, which exceed the size limits of the vanilla structure system, along with streets and Sun Gates, including the access points and aqueduct around them.

The world follows a river that starts in the northern mountains, splits several times and reaches both the northern chasm of Zaun and Piltover itself. Items, Crafts & World of the Realms of Runeterra and Megastructure block are required dependencies, so both must be installed alongside the mod. Realms of Runeterra is published for Forge and NeoForge across 10 release versions, 1.21 – 1.21.11, and it runs on client and server, so the server and every player need it. The code is under All rights reserved and is not open source.

Key features

  1. Procedural dimension

    A 131,072-block-per-side dimension with generated regions, biomes, caves and terrain layout.

  2. Megastructures

    Placement algorithms position structures larger than the vanilla structure system allows, along with streets.

  3. Rivers and mountains

    A river runs from the northern mountains across the terrain and reaches both Zaun's northern chasm and Piltover.

  4. Sun Gates and aqueduct

    Sun Gates with access points and an aqueduct are placed as part of the generated world.

Compatibility

Latest build for each game version and loader.

No stable releases
Every published file is a beta or alpha build.
1.21.x10 of 10 versions with builds
1.21.11Not available0.1a.8
1.21.10Not available0.1a.8
1.21.9Not available0.1a.8
1.21.8Not available1.21.8-0.1a.77NEO
1.21.7Not available1.21.8-0.1a.77NEO
1.21.40.1a.77Not available
1.21.30.1a.63Not available
1.21.20.1a.63Not available
1.21.10.1a.63Not available
1.210.1a.63Not available
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

Items, Crafts & World of the Realms of RuneterraThis project introduces all the items, blocks, abilities and other gameplay mechanics not related to the world generation provided by the Core Package of Realms of Runeterra: A Tale of Relative Dimensions
Required
Megastructure blockA structure block that breaks the constraints of regular structure blocks and stores chunk-sized parts of the desired area in different consecutive NBT files that can also be loaded back by the same block
Required

How it compares

Full comparison

The Darkness Realm is a NeoForge mod for 1.21.1 – 1.21.4, published under All rights reserved and not open source, with the same client and server environment. Runeterracraft is a Forge mod for 1.21.1 under the MIT License, and it is not open source. Celestial Tales targets NeoForge 1.21.4 only and is also licensed as All rights reserved.

ModLoadersGame versionsEnvironmentUpdated
Realms of Runeterra: A tale of Relative DimensionsForge and NeoForge1.21 – 1.21.11Client and server2025-12-31
The Darkness RealmNeoForge1.21.1 – 1.21.4Client and server2024-12-10
RuneterracraftForge1.21.1Client and server2025-04-08
Celestial TalesNeoForge1.21.4Client and server2025-07-19

Questions

Does Realms of Runeterra need Items, Crafts & World of the Realms of Runeterra?

Yes. Items, Crafts & World of the Realms of Runeterra is a required dependency and must be installed with the mod.

Which loaders does Realms of Runeterra support?

Forge and NeoForge. Current files are for 1.21.4 on Forge and 1.21.11 on NeoForge, both in the alpha channel.

Does the server need the mod?

Yes. Every player and the server need a copy of the mod.

In the catalog

Realms of Runeterra: A tale of Relative Dimensions is one of 7,216 Magic mods on ModsFinder, and one of 3,927 Magic mods for Forge. 19,862 mods support Minecraft 1.21.11.

More from Null Collective

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What the author says

Realms of Runeterra aims to create an immersive experience in a 131k block side dimension in which every region of Runeterra, the world of the globally known game League of Leagends, will be able to be explored within. In every new world you create, you will find the the layout of the map you know and the regions you…
Null Collective, on the Modrinth page

Official listing

Owner
Null Collective
Published
2024-08-30
Updated on Modrinth
2025-12-31
Facts verified
2026-10-15

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