Islands
Termos

lua mapgen featuring tropical islands and vast ocean

Hallelujah Mountains (AKA Cloudlands)
DrFrankenstone

Giant rocks floating suspended in magnetic eddies. (skylands, islands, fantasy, giant trees)

Nodeverse
aerkiaga

A procedurally generated space exploration game

Too Many Stones
JoeEnderman

35 new stone types that all spawn in the world on all mapgens but v6.

Wilhelmines Living Floatlands
Liil

Adds various prehistoric animals to your Floatland Zone, if you are using V7 Map Generator.

SwampZ
runs

A cool swampy biome.

Cloud Items
Panquesito7

Powerful cloud tools.

Oxidizing Copper
StarNinjas

This mod aims to make copper/bronze more realistic by making them slowly oxidize into a bluish/green block when exposed to water.

Asuna
EmptyStar

A vibrant world of natural wonders

Epic Combat
hilol

Fight your enemies with various weapons and protect yourself with distinct sets of Armour, whilst sharpening your skills in PVP and PVE.

Other Worlds
TenPlus1

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

Dense Ores
benedict424

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

Alien Material
debiankaios

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

Caverealms
HeroOfTheWinds

A mod for Minetest to add underground realms.

Superflat
srifqi

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

Giant Mushroom/ Mushrooms
Hybrid Dog

Add mushrooms and giant mushrooms.

NodeCore Cats
Warr1024

Add adorable cats to NodeCore

Multiple Biome Generator
chaosomnium

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

Nssb
TenPlus1

BIOME integration for nssm, the not so simple buildings.

Fireflies
Shara

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

Large Slugs
jwmhjwmh

Adds node-based slug mobs to your world

Australia
demon_boy

Adds a wide variety of Australia-themed biomes and content

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

Universal geometry realm
paramat

Create worlds of varying shapes

Geodes
AwesomeDragon97

Adds amethyst geodes and an API for making custom geodes.

Smaller Steps
Hamlet

Makes stairs and slabs use smaller shapes.

Stonebrick Dungeons
Hamlet

Turns newly generated cobblestone dungeons into stonebrick.

The Lower Road
Deadlock

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

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.

Subterrane
FaceDeer

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

Amethyst
alerikaisattera

Amethyst, basalt, calcite and related building blocks

Dream World
Furious_mat

add Dream World in mineclone

Swamps
Hybrid Dog

Adds swamps

Nodecore Rabbits
LandarVargan

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

Wilhelmines Living Desert
Liil

Adds plants to the default deserts of minetest game.

Sunset Biomes
RisingLeaf

Adding two biomes and stuff around them.

NextGen Bedrock
StarNinjas

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

Geodes Library
alerikaisattera

API/library for creating geodes

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Skygrid
ROllerozxa

Custom skygrid mapgen.