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Overworld height increase

by SuperAnt_

Overworld height increase lets a world reach 2032 blocks above the bottom of the overworld, with the original -64 to 0 height range kept.

FabricForgeNeoForgeQuiltServer required, client optionalMIT License1.21.8 – 1.21.10

What it does

Installed as a datapack, the mod raises the overworld's build height by 2032 blocks and keeps the original -64 to 0 range intact, so existing terrain and structures stay where they are. It is a server-side change: the server needs it, while players may add it for the same effect in their own worlds. Files are published for Fabric, Forge, NeoForge and Quilt, with 1.0 as the single release, for 1.21.10 and the 1.21.8 – 1.21.10 range. The mod is released under the MIT License and is not open source.

Key features

  1. Taller overworld

    Increases the overworld height by 2032 blocks, giving more room for vertical builds and mountains.

  2. Original range preserved

    The -64 to 0 height range is kept, so the lower world and its terrain are unchanged.

  3. Datapack delivery

    Ships as a small datapack, so it can be added without a separate mod loader setup.

Compatibility

Latest build for each game version and loader.

1.21.101.0+mod1.0+mod1.0+mod1.0+mod
1.21.91.0+mod1.0+mod1.0+mod1.0+mod
1.21.81.0+mod1.0+mod1.0+mod1.0+mod
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

Higher Heights needs the server to run it, while clients may leave it out, and covers Fabric, Forge, NeoForge and Quilt 1.17 – 26.3, under the MIT License and not open source. Increased World Height has to run on both client and server, is for Fabric only, covers 1.20.1 – 1.21.11, and is open source under the MIT License.

ModLoadersGame versionsEnvironmentUpdated
Overworld height increaseFabric, Forge, NeoForge and Quilt1.21.8 – 1.21.10Server required, client optional2025-08-25
Higher HeightsFabric, Forge, NeoForge and Quilt1.17 – 26.3Server required, client optional2026-09-16
Increased World HeightFabric1.20.1 – 1.21.11Client and server2026-07-23

Questions

Does Overworld height increase need a new world?

No. The author notes that a loaded world must be reloaded and the player must rejoin with the datapack applied before the change takes effect.

In the catalog

Overworld height increase is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 15,569 mods support Minecraft 1.21.10.

World generation mods8,515Fabric modsMods for 1.21.1015,569

More from SuperAnt_

All projects
Convert blocks to block displays1.21.4 – 1.21.11SkullToHead1.15 – 1.21.11The Game Crasher1.18 – 1.21.11Saddle Arrows1.20.5 – 1.21.11No Dried Ghast Recipe1.21.6 – 1.21.11CyberChamber of the Wandering Wizard1.21.4

Similar mods

Biomes O' Plenty1.7.10 – 26.3Terralith1.18.2 – 26.3YUNG's Better Nether Fortresses1.18.2 – 26.1.2Dungeons and Taverns1.19 – 26.3Yeetus Experimentus1.18.2 – 26.3Towns and Towers1.18.2 – 26.3

What the author says

Small datapack that increases the height of the overworld to 2032 blocks (stil keeping the -64 to 0 heights) Will not be loaded into the world with just /reload, you would need to rejoin a world with the datapack to apply changes.
SuperAnt_, on the Modrinth page

Official listing

Owner
SuperAnt_
Published
2025-08-25
Updated on Modrinth
2025-08-25
Facts verified
2026-10-15

Tags

ManagementUtilityWorld generation
Open on ModrinthCompare