Nether addons
DragonWrangler

adds more nodes and decorations to the nether

Lucky Block Ore
ems111

Adds Lucky Block ores to world.

VoxeLibre caves
Noordstar

Custom caves in VoxeLibre

Ancient Bones
karlexceed

Adds bones with loot to dungeons.

Elephant Veins
jan Epiphany

Replaces small, sporadic ore pockets with sparse, gigantic ore veins.

Cave Generator
Noordstar

A custom cave generator engine

Lapis Lazuli
LNJ

Adds lapis lazuli ore, items and blocks.

Chemistry
Emiliano

A package with some elements and compounds

Winuser Leafdecay
Liil

With this additiona leaf decay, all trees in naturalbiomes, livingdesert, livingjungle and livingfloatlands have a working leafdecay function.

Wildflower Fields
mzs.112000

Adds a wildflower field biome to Minetest Game.

Underground Challenge
Hume2

Explore all 62 underground biomes!

Generic moon of Saturn
Red_King_Cyclops

Replaces the default earthlike setting with a generic moon of Saturn.

Herbs
Clyde

Adds 15 flowers and 6 mushrooms.

Mob BiomeDb Mapper
Neuromancer

Allows mobs to spawn in biomes that don't support them (Using info from BiomeDb)

Mapgen Superflat
DragonWrangler

Makes your world super flat

Magma
SuperStarSonic

Adds volcanoes, lava vents and new magma blocks

NodeCore SkyRealm
Warr1024

SkyBlocks inside vanilla NodeCore

NodeCore SeaLife
Winter94

Adds Biodiversity to NodeCore Seas & Rivers

Valleys Mapgen
Gaël de Sailly

A map generator with valleys, rivers, mountains and many plants.

NodeCore Crystals
Winter94

Adds various crystal types to Nodecore

Time Travel
Red_King_Cyclops

Adds in a craftable time machine that can be used to time travel to different time periods of Earth's history.

Alien Tools
chaosomnium

Alien Tools Mod for Minetest - adds Alien Tool, Shield, biome, etc

Advanced Biome Decoration Modpack
EmptyStar

A collection of advanced biome decorations

Bamboo
AwesomeDragon97

Adds bamboo which generates in jungles and can be used as a crafting ingredient.

NodeCore Pottery
Winter94

Adds clay and ceramic items and nodes to NodeCore

UFO wreck
Irremann

UFO wreck

Indestructible Bedrock Layer
Wuzzy

Adds an indestructable bedrock layer at the bottom of the world.

Ancient Ice Stuff
Robot10&Scheletor

Adds a new powerful ore to the game

NodeCore Fossil
Winter94

Discover fossils, oil, natural gas, amber, and more!

NodeCore Coal
Winter94

Adds 3 ores of coal to NodeCore.

Hades Endgame
VeproGames

Adds various goodies to Hades Revisited, focused on Late/Endgame

NodeCore Stalactites & Stalagmites
Winter94

Generates Stalactites and Stalagmites in caverns underground.

Zinc
alerikaisattera

Zinc metal, used for making brass

NodeCore Nature: Revised
Warr1024

Updated, fixed, enhanced edition of Winter94's NodeCore Nature

NodeCore Fungi
Winter94

Adds various fungi to NodeCore, in all their mycelial glory.

Nodecore Vulcan Improved
Winter94

Improved version of nc_vulcan.

NodeCore Vuga
Winter94

Generates Vuga Underground.

World Borders
argyle

Add impenetrable barriers to the sides and bottom of the world.

NodeCore CatRealm
Warr1024

Adds a cat-themed dimension with unique ores and over-powered tools

Underground Survival Lighting
Arkatron

If you like underground light in survival, use this mod, it can help that.