NodeCore
Warr1024

Minetest's top original voxel game about emergent mechanics and exploration

MineClone 5
kay27

A fork of MineClone 2 with no release milestones, rapid delivery, merges by one approval and no MC target version limitations

PaleoTest
ElCeejo

Adds Prehistoric Fauna and Flora to Minetest Game

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Ocean
StarNinjas

Adds coral reefs, fish, decorative ocean blocks and much more!

NodeCore Stairs
Warr1024

Adds an assortment of stairs and slabs to NodeCore

KSurvive
MadKamel

A game that changes much of MTG's gameplay.

Multiple Biome Generator
chaosomnium

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

Dirtcraft
dayer4b

Adds automatic crafting recipes for making most kinds of dirt

NodeCore ALPHA
Warr1024

Early-access edition of NodeCore with latest features (and maybe bugs)

Bridges and stairs, factory-style
narrnika

Adds a steel bridges, railings and stairs in Minetest.

New Factory
theFox

Industrialization for minetest

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

SkyRealm for NodeCore
Warr1024

SkyBlocks inside vanilla NodeCore

PaleoTest for Hades Revisited
SFENCE

Adds Not Only Prehistoric Fauna and Flora to Hades Revisited.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Gizmo's Of Carbon Machinations
ThatGhzGamer

Adds various charcoal related items such as a Marvelous Hammer to Compress things, New Gear, New Diamonds, Charcoal and Willow Charcoal.

Ocular Networks
PolySaken

Draw power from the world, and use it to power machines and tools.

Poly Decor
PolySaken

My spin on decorative stuff.