Ethereal NG
TenPlus1

Adds many new biomes, items and mechanics into the world.

Nether
PilzAdam

Adds a deep underground realm with different mapgen that you can reach with obsidian portals.

Technic
RealBadAngel

Extensive machinery mod with electricity and ores.

Extra Biomes
CowboyLv

Adds extra biomes, while keeping its looks close to the vanilla MTG

Plantlife
mt-mods

Adds various kinds of plants, fruit bushes, fallen trees, and a whole host of foliage and other ground cover.

pathv7 redo! (Mapgen V7 only)
1F616EMO

Creates a worldwide network of paths, bridges and tunnels.

Caverealms Lite
Shara

A mod for Minetest to add underground realms.

Beautiful Flowers
1faco

Adds many flowers to MT

Technic Plus
mt-mods

Technic fork with focus on features and stability

Wilhelmines Living Jungle
Liil

Adds a new type of dense jungle biome to your world

Swamp Biome
Atlante

This mod adds a new swamp biome, with mangrove trees, mud and more!

Natural slopes for Minetest Game
karamel

Add natural slopes for Minetest Game

Alive AI
AiTechEye

Advanced survivor ai mobs (npc, monsters and more)

Nether
Hybrid Dog

The underworld for Minetest.

Other Worlds
TenPlus1

Adds asteroid layers and height-based skybox switches to create space environments.

Randungeon
Phii

adds highly randomized vivid dungeons to the world, and tools to spawn/customize them.

Industrious
StarNinjas

Adds new industrious-themed blocks and tools.

Baked Clay
TenPlus1

Adds the ability to bake clay into blocks and colour them with dye.

Australia
demon_boy

Adds a wide variety of Australia-themed biomes and content

Algae
Just_Visiting

Algae mapgen addition to "Minetest Game"

Wilhelmines Marinara
Liil

adds water structures and coral reefs to the oceans of your world

Ocean
StarNinjas

Adds coral reefs, fish, decorative ocean blocks and much more!

Wilhelmines Natural Biomes
Liil

Adds 9 new biomes

Amethyst
alerikaisattera

Amethyst, basalt, calcite and related building blocks

Pyramids (with treasures)
Wuzzy

Pyramids with treasures!

Technic Plus Beta
mt-mods

The technic modpack extends the Minetest game with many new elements, mainly constructable machines and tools.

Shallow Ores
Monniasza

Places ores shallower in your world! No more time wasted digging!

Dense Ores
benedict424

Adds rare ores with twice the drops of their normal counterpart.

The Lower Road
Deadlock

Adds a long road from -Z to +Z to the world, during world-generation.

Multiple Biome Generator
chaosomnium

230 Pseudorandomly Generated Biomes, Trees, Fruits, Ores, Tools, and Liquids

Sunset Biomes
RisingLeaf

Adding two biomes and stuff around them.

Unter Null
Casimir

You start swimming in the middle of an infinite ocean. Take your time and build.

Cloud Items
Panquesito7

Powerful cloud tools.

Warning: Non-free media.

Livingcaves
Liil

Adds more life to the caves of your world

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.

Caverealms
HeroOfTheWinds

A mod for Minetest to add underground realms.

Quartz
Evergreen

Adds quartz ore and some decorative quartz blocks

Badlands
AwesomeDragon97

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

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".