ModsFinder

Nether Under Overworld

by badooga

Nether Under Overworld links the bedrock layer of the overworld with the top of the nether, so players can step through the bedrock barrier between the two dimensions.

FabricForgeQuiltServer required, client optionalMIT License1.17 – 1.20.4

What it does

Standing on the bedrock floor at the base of the overworld moves a player to the same x and z position within the upper strata of the nether. Pressing the head against bedrock at the top of the nether sends the player back down to the overworld at the same coordinates. In adventure and survival modes the game first creates an air pocket at the destination, while creative and spectator modes teleport without one, and the world is left unchanged.

The mod is a datapack with a server-side component, so the server needs it and players may add it for convenience. The developers intended it to run alongside a portal mod that switches off nether portals, because otherwise players could exploit the 8:1 scale ratio between the two dimensions to cover great distances. Because the teleport keeps x and z coordinates, it uses a 1:1 scale instead.

Two builds exist: one for vanilla nethers, which are 128 blocks tall, and one for the 256-block-tall Amplified nether. The mod can be uninstalled and reinstalled at any time.

Key features

  1. Bedrock crossing

    Standing on overworld bedrock or touching nether ceiling bedrock moves the player between the two layers.

  2. Matching coordinates

    Each jump keeps the same x and z position, so the destination lines up with where the player stood.

  3. Air pocket on arrival

    In survival and adventure modes an air pocket is created at the destination so the player can breathe.

  4. Two nether heights

    A build for vanilla 128-block nethers and a build for the 256-block Amplified nether are provided.

Compatibility

Latest build for each game version and loader.

1.20.x5 of 5 versions with builds
1.20.41.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.20.31.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.20.21.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.20.11.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.201.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.19.x5 of 5 versions with builds
1.19.41.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.19.31.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.19.21.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.19.11.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.191.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.18.x3 of 3 versions with builds
1.18.21.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.18.11.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.181.0.0+amplified+mod1.0.0+amplified+mod1.0.0+amplified+mod
1.17.x2 of 2 versions with builds
ReleaseBetaAlphaNot available

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

Use cases

Who it’s for: Server owners and players who want a second route between the overworld and the nether. Modpacks that change nether height need the datapack values adjusted.

Questions

Does Nether Under Overworld need to be installed on the server?

Yes. The server must run it, while players may leave it out. Players may install it, but they do not have to.

Which build should a server use for a modified nether?

Use the build that matches the nether height.

Can it be used with a portal mod?

Its authors designed it to pair with a portal mod that disables nether portals, so that long-distance travel cannot be done through portals.

In the catalog

Nether Under Overworld is one of 3,932 Transportation mods on ModsFinder, and one of 2,390 Transportation mods for Fabric. 13,907 mods support Minecraft 1.20.4.

Transportation mods3,932Fabric modsMods for 1.20.413,907

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What the author says

Details: This datapack/server-side mod allows you to cross the bedrock barrier between the overworld and nether. Standing on bedrock at the bottom of the overworld will teleport you to the same x/z coordinates in the upper layers of the nether, and touching your head against the bedrock at the top of the nether will…
badooga, on the Modrinth page

Official listing

Owner
badooga
Published
2023-09-05
Updated on Modrinth
2023-09-05
Facts verified
2026-10-15

Tags

Transportation
Open on ModrinthCompare