NextGen Bedrock
StarNinjas

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

Zinc
alerikaisattera

Zinc metal, used for making brass

3d ores!
Soundwavez

a slick new take on the default ores!

Alien Material
debiankaios

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

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

Coconut Trees
AwesomeDragon97

Adds coconut trees that appear on beaches

Sedimentology
sofar

A mod that adds realistic erosion and degradation of rocks.

Loose Rocks
eduardomezencio

Adds loose rocks which generate randomly on the surface.

Swamps
Hybrid Dog

Adds swamps

Sailing
cakenggt

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

Meze
Calinou

A special ore that kills you when mined.

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Boring RPG
Lebedev

New items blocks and other pieces are waiting for you here

Giant Mushroom/ Mushrooms
Hybrid Dog

Add mushrooms and giant mushrooms.

XNether
Ghaydn

Adds trees, grass and ores to PilzAdam's Nether

Desert Ores
DumbDave961

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

Winuser Leafdecay
Liil

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

Underground Challenge
Hypernoot

Explore all 62 underground biomes!

Easy ores
X-DE

Minetest ores now generate higher up

summer
ulla

SUMMER

Dragonbone Stuff
Robot10&Scheletor

Adds dragonbone set

Bamboo
AwesomeDragon97

Adds bamboo which generates in jungles and can be used as a crafting ingredient.

Ancient Ice Stuff
Robot10&Scheletor

Adds a new powerful ore to the game

Ancient Bones
karlexceed

Adds bones with loot to dungeons.

Generic moon of Saturn
Red_King_Cyclops

Replaces the default earthlike setting with a generic moon of Saturn.

My Treasure
Don

Adds treasure chests around the world

Magma
SuperStarSonic

Adds volcanoes, lava vents and new magma blocks

Randomized Map-specific Ores
Piezo_

Adds two randomly created ores to each world with varying properties depending on the world's seed

Kitty/Kitto Ores
nemokitty9

Nemokitty9's own ore pack. Includes Tools!

Startest
Robot10&Scheletor

This mod adds several space stuff to the game.

New Horizons
Hi_World

Adds 4 new biomes and TONS of new blocks!

Quartz Geodes
AwesomeDragon97

Extends the Geodes mod with quartz geodes.

Alien Tools
chaosomnium

Alien Tools Mod for Minetest - adds Alien Tool, Shield, biome, etc

Beautiful Boulders
regulus

Procedurally Generated Rocks with (pretty) Accurate Collision Boxes

World Borders
argyle

Add impenetrable barriers to the sides and bottom of the world.

morebiomes
mzs.112000

A simple mod adding a few biomes to Minetest Game

Nyancat's heaven (reworked)
Hybrid Dog

Adds a nyanland in the sky

Spawn redo
cathaya7d4

Drop-in replacement for default/spawn for more third-party biomes

Sticks Stones
MikeRedwood

Makes Sticks from leaves and scatters small stones

Underground Survival Lighting
Arkatron

If you like underground light in survival, use this mod, it can help that.