Do you only want to slightly modify the Nether and not add a couple thousands of different mechanics? Or do you just want some neat improvements to the Nether generation? Or are you looking for a worldgen datapack that supports multiplayer? (including Bukkit/Spigot/Paper servers, etc.)
Increased World Height? You got this. The world height is now 192 blocks + 64 extra blocks for the roof! It supports Multiplayer servers, no matter if it is Vanilla, or Bukkit/Spigot/Paper/Purpur/any other fork! All biomes rehauled? That one was kinda obvious, but of course!
And yeah, that's all. Unlike my Ender Expansion pack - Stellarity - I want to keep the Nether rehaul simple.
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Big thanks to my supporters! CSS_Scripter, TaintendTofu, theammir, DrakenStrike, TheNeonFish, GWDdoS, QuantumEmpress, Kier