If you are still using CraftBukkit or Spigot 1.8.8-1.11 use Version 1.4.1.
If you are using CraftBukkit or Spigot 1.12 or later, use the current version.

TallNether is fairly straightforward in function: instead of the 128 block high dimension normally used it generates the full 256 block height Minecraft can allow. It achieves this by modifying parts of the vanilla generator to increase the generation height.

Exploring the taller nether is an interesting experience. It feels the same at first until you realize how long you've been working your way up...then look down into an abyss where lava falls disappear into the haze and the bottom can't be seen.

Compatibility:
CraftBukkit 1.8.8 through 1.15.1
Spigot 1.8.8 through 1.16+
Paper 1.9.4 through 1.16+
Most Paper forks are also compatible but there may be exceptions. Only base Spigot and Paper are guaranteed to be supported.

Installation and Configuration

1. Download TallNether.zip and extract the files to the plugins directory.
2. You should have a TallNether.jar and a directory named TallNether.
3. Inside the TallNether directory edit the config.yml file to set up your configuration.
4. Start up the server and when an enabled world with the nether environment is created or loaded TallNether should substitute itself for that world's nether generator.

If you are using this on a new map, the configuration file must be set up before starting the server/creating the world. Otherwise some vanilla chunks may get generated.

You can use this on an existing nether world as well but there will obviously be a significant mismatch with the existing chunks. Be sure to make a back up before trying TallNether!

Details on configuration can be found here: TallNether Configuration

Known Bugs and Issues:
- When creating a new world on 1.15 and 1.16 the chunks near spawn may generate incorrectly. See this page for a workaround: https://github.com/OtakuMegane/TallNether/wiki/Premature-Chunk-Generation-Bug

Screenshots
Because the plugin is still the vanilla generator and how Minecraft renders the fog and draw distance in the nether it's a bit hard to really show the difference in screenshots but here's a couple anyway:


No bedrock yet, only starting the journey.


What's down there? Who knows. Feather Falling ain't gonna save you though.


This is a shot using OptiFine to get rid of the nether fog. This was taken from y = 100. It's a long way up.

Issues and bugs
If you happen to encounter new bugs, please file a ticket: https://github.com/OtakuMegane/TallNether/issues

Finalized
TallNether is considered finalized with all intended features present. Unless a worthwhile idea comes to mind, the only expected updates will be compatibility for future versions of Minecraft or fixes in case a bug is discovered.