More Nether Mod
More Nether Mod changes the Nether's height limits so that it reaches the same build range as the Overworld while keeping the Nether roof.
What it does
The mod raises the Nether's vertical limits. The minimum build height is y=-64 and the maximum is y=511, with portals placed at y=320. An upper bedrock layer sits at y=320, and the lava sea level and bastion spawns are adjusted to match the new layout. The Nether roof remains in place, so the dimension keeps its usual ceiling while gaining room below it.
Fabric Language Kotlin is required and must be installed alongside More Nether Mod. The mod is published for Fabric only, with builds for 1.20.6 and 1.21. Version 1.1 for 1.21, released on 2024-06-22, is the latest file. Because it changes world generation, More Nether Mod runs on client and server, and both the server and every player need it. The code is released under the CC0 1.0 Universal license and is open source, with public source code and an issue tracker.
Key features
Extended Nether height
The Nether gains a build range from y=-64 up to y=511, so terrain and structures can extend well beyond the vanilla limits.
Portals at a higher level
Nether portals are placed at y=320, matching the upper bedrock layer and the new vertical extent of the dimension.
Adjusted lava sea and bastions
The lava sea level and bastion spawns are shifted to fit the taller Nether, so generated structures stay consistent with the terrain.
Three new advancements
The mod adds three advancements that track progress through the modified dimension, plus one hidden secret.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Incompatible 4
How it compares
Increased World Height is open source under the MIT License, works on client and server, and covers 1.20.1 – 1.21.11, so it changes the whole world rather than only the Nether. Higher Nether is server-side only, released under the GNU General Public License v3.0 only, and supports Fabric, Forge, NeoForge and Quilt for 1.20 – 1.21. Custom World Height+ is server-side only under the CC0 1.0 Universal license, targeting 1.21.6 – 26.3 on Fabric.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| More Nether Mod | Fabric | 1.20.6 – 1.21 | Client and server | 2024-06-22 |
| Increased World Height | Fabric | 1.20.1 – 1.21.11 | Client and server | 2026-07-23 |
| Higher Nether | Fabric, Forge, NeoForge and Quilt | 1.20 – 1.21 | Server-side only | 2024-06-14 |
| Custom World Height+ | Fabric | 1.21.6 – 26.3 | Server-side only | 2026-10-12 |
Questions
Does More Nether Mod need Fabric Language Kotlin?
Does the server need the mod for a Nether with extended height?
Which versions does More Nether Mod support?
Is More Nether Mod compatible with Amplified Nether?
In the catalog
More Nether Mod is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 15,770 mods support Minecraft 1.21.
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What the author says
This mod is a BRDM Mod that allows the nether to generate similar to the Overworld in terms of the height limit. Also, this mod requires Fabric Language Kotlin.
Official listing
- Modrinth page
- modrinth.com/mod/nether-height-expansion-mod
- Owner
- GlacialVitality
- Published
- 2024-05-17
- Updated on Modrinth
- 2024-06-22
- Facts verified
- 2026-10-15