morebiomes
mzs.112000

A simple mod adding a few biomes to Minetest Game

treasures
ademant

Treasure nodes with useful items

golden lava
GigaByte

add golden lava

Sticks Stones
MikeRedwood

Makes Sticks from leaves and scatters small stones

Noriel Sylvire's Minerals Core Modpack
Noriel_Sylvire

An API for automatically registering recipes, nodes and ore generation.

Dirt Tunneler
Neuromancer

Makes dirt deeper and you can tunnel through it just by walking through it. Press spacebar/shift to tunnel upward/downward with auto placed ladders.

World Borders
argyle

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

Purple ore
X-DE

Adds new purple ore to floating islands and caves from height 200 to 31000.

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Beautiful Boulders
regulus

Procedurally Generated Rocks with (pretty) Accurate Collision Boxes

Spawn redo
cathaya7d4

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

Randomized Map-specific Ores
Piezo_

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

More Coral
Nathan.S

Adds coral in more colors.

Obdy
Sires

Adds some pretty OP tools :)

Floof
Momo

Add BicBiomeCraft inspired biomes, tools, and items.

Easter Eggs / Ostereier
Ineva

Adds various coloured eggs for Easter!

Mud
Blocky Player

Adds stylish mud blocks and even blocks you can walk through. Setup traps, secret rooms and much more!

Silver
Jackknife

adds silver ore and tools