Water Life
Gundul

new mobs for your river and sea water

Villages
Sokomine

Explore the world and find villages of diffrent types. Buy a house in a village and settle down.

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.

Handle Schematics
Sokomine

A library to make creating and placing saved areas easier.

Draconis
ElCeejo

Adds Dragons and related resources and equipment to Minetest Game

Ethereal NG
TenPlus1

Ethereal mod uses the v7 mapgen to add many new biomes to the world.

More Ores
Calinou

Adds new ore types.

More Trees!
VanessaE

Adds a whole bunch of new types of trees, some bearing fruit or similar, using biome_lib for the placement engine.

Baked Clay
TenPlus1

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

Basic Houses
Sokomine

Simple random houses spawning in small groups on the map

Pyramids (with treasures)
Wuzzy

Pyramids with treasures!

Plantlife
VanessaE

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

Cloud Items
Panquesito7

Powerful cloud tools.

Biome Lib
VanessaE

The biome spawning and management library.

Experimental Villages Mapgen
Nore

Changes the way ores are placed, add new biomes and villages.

Technic Plus
mt-mods

Technic fork with focus on features and stability

Algae
Just_Visiting

Algae mapgen addition to "Minetest Game"

Other Worlds
Shara

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

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.

Quartz
Evergreen

Adds quartz ore and some decorative quartz blocks

Caverealms
HeroOfTheWinds

A mod for Minetest to add underground realms.

SkyRealm for NodeCore
Warr1024

SkyBlocks inside vanilla NodeCore

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Underground Challenge
Hume2

Explore all 62 underground biomes!

DarkAge Improved
CraigyDavi

This mod adds some new blocks that allow pre-industrial looking buildings to be made.

Caverealms Lite
Shara

A mod for Minetest to add underground realms.

Superflat
srifqi

(Yet Another) Superflat Map Generator: Costumize world generation layer by layer

Swamps
Hybrid Dog

Adds swamps

Fireflies
Shara

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

Darkage - the original plus improvements
addi

DarkAge adds several new nodes and crafts to create a pre industrial landscape.

SwampZ
runs

A cool swampy biome.

Giant Mushroom/ Mushrooms
Hybrid Dog

Adds various mushrooms.

Universal geometry realm
paramat

Create worlds of varying shapes

Subterrane
FaceDeer

A mod that creates vast underground caverns and allows biomes to be defined for them

Nodecore Rabbits
Lone_Wolf

Adds rabbit holes, rabbits, and traps to the Nodecore game

NC Steam
Winter94

Adds new mechanics to Nodecore, such as steam power and dynamic water

Valleys Mapgen
Gael de Sailly

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

Australia
demon_boy

Adds a wide variety of Australia-themed biomes and content

Indestructible Bedrock Layer
Wuzzy

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