More Structures
ClothierEdward

Adds several new structures to make your world more alive.

Quartz
Evergreen

Adds quartz ore and some decorative quartz blocks

Livingcaves
Liil

Adds more life to the caves of your world

Caverealms
HeroOfTheWinds

A mod for Minetest to add underground realms.

Better Biomes by Atlante
Neuromancer

This mod adds some of the subtle understated beauty of nature to your biomes to make the world look more natural. It was created by Atlante.

Badlands
AwesomeDragon97

Adds the badlands biome, which contains plentiful clay and gold.

Deepslate
Silver Sandstone

Adds deepslate and related building materials.

Fireflies
Shara

Adds fireflies which can be caught in a net and placed in bottles for lighting.

Magma Conduits
FaceDeer

Removes default mapgen lava and adds widely-spaced vertical lava "veins".

Biospheres
Feufochmar

A map generator generating single-biome islands inside glass spheres.

NextGen Bedrock
StarNinjas

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

Nssb
TenPlus1

BIOME integration for nssm, the not so simple buildings.

Alien Material
debiankaios

Adds new blocks, items, and tools from aliens. A new time begins.

block physics
GigaByte

Add pieces of broken blocks when breaking them.

Geodes
AwesomeDragon97

Adds amethyst geodes and an API for making custom geodes.

In the Fog
Jo5629_

Herobrine has entered your world.

3d ores!
Soundwavez

a slick new take on the default ores!

Zero-Effort Custom Minerals
Piezo_

A tool for registering entire materials, complete with ore generation, tool-sets and automatically generated sprites with almost no effort required

UFO wreck
Irremann

UFO wreck

Coconut Trees
AwesomeDragon97

Adds coconut trees that appear on beaches

Swamplified
Neuromancer

This mod adds a few more nice touches to Atlante's Swamp biome mod

pilzmod
Phii

a spreading mushroom biome which you can spawn into the world, with its own monsters and a boss you need to slay to stop the biome's growth. Best played with bow & armor mod and after reading manual.

Swamps
Hybrid Dog

Adds swamps

Loose Rocks
eduardomezencio

Adds loose rocks which generate randomly on the surface.

Ore Deposits
Tarruvi

Adds ore deposits that can randomly spawn on stone

Sailing
cakenggt

Live in a tropical paradise where you can sail, mine coconuts, etc.

Sedimentology
sofar

A mod that adds realistic erosion and degradation of rocks.

Meze
Calinou

A special ore that kills you when mined.

Boring RPG
Lebedev

New items blocks and other pieces are waiting for you here

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Dyes for Extra Biomes
Skivling

Deprecated because after ebiomes v1.5.0, dye recipes are included by default, making this unnecessary. Adds dye recipes for the flowers from Extra Biomes.

Giant Mushroom/ Mushrooms
Hybrid Dog

Add mushrooms and giant mushrooms.

LootChests Modpack
mt-mods

Modpack adding a lot of various loot containers across the world to be found and providing an API, resources and integrations for other mods

Wilhelmines Living Desert
Liil

Adds plants to the default deserts of minetest game.

XNether
Ghaydn

Adds trees, grass and ores to PilzAdam's Nether

Nether addons
DragonWrangler

adds more nodes and decorations to the nether

Herbs
Clyde

Adds 15 flowers and 6 mushrooms.

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.

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.