Wilhelmines Living Floatlands
Liil

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

Ruined structures
X-DE

Adds ruins to desert, sandstone desert, icesheet, snowy grassland, taiga, rainforest and tundra

Livingcaves
Liil

Adds more life to the caves of your world

More Structures
ClothierEdward

Adds several new structures to make your world more alive.

Nssb
TenPlus1

BIOME integration for nssm, the not so simple buildings.

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.

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.

NextGen Bedrock
StarNinjas

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

Magma Conduits
FaceDeer

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

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.

Alien Material
debiankaios

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

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.

3d ores!
Soundwavez

a slick new take on the default ores!

Coconut Trees
AwesomeDragon97

Adds coconut trees that appear on beaches

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

Sedimentology
sofar

A mod that adds realistic erosion and degradation of rocks.

Swamps
Hybrid Dog

Adds swamps

Swamplified
Neuromancer

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

Loose Rocks
eduardomezencio

Adds loose rocks which generate randomly on the surface.

Sailing
cakenggt

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

Zinc
alerikaisattera

Zinc metal, used for making brass

UFO wreck
Irremann

UFO wreck

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.

Winuser Leafdecay
Liil

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

Desert Ores
DumbDave961

Generates ores in deserts and other biomes. Also spawns raw ore blocks if enabled. Biome specific ore node variants coming soon.

Chemistry
Emiliano

A package that adds More Ores and Things