Version 1.21.1-9.3.16 - Recommended
All the little files that make the world go round.
Website: https://essential.gg/
In addition to extending the Nether's generation height to 192, Incendium adds 8 all-new biomes and 9 new structures with new custom mobs, items and advancements. Terrain is also overhauled, with jagged mountains, twisting caves and much more.
Website: http://journeymap.info
This mod introduces new tools for datapack and modded worldgen developers to utilize, with the aim of increasing inter-project compatibility and expanding configurability in general.
Website: https://neoforged.net
NeoForge is a free, open-source, community-oriented modding API for Minecraft.
Website: https://pixelmonmod.com/
Structory is a seasonally updated, atmospheric structure mod with light lore for Fabric/Forge/Quilt.
Structory: Towers adds immersive, biome-themed towers to the world, for Fabric/Forge/Quilt.
Welcome to Tectonic, a world generation project that aims to transform how terrain is shaped.
Minecraft 1.18 brought a massive overhaul to world generation. Terralith 2.0 takes that overhaul and turns it up to eleven. This mod is the successor to the original Terralith, but it has been rewritten from the ground up to provide a completely new experience.
Website: https://pixelmonmod.com/