KSurvive 2
MadKamel

A game built 100% from scratch, including code, textures and sounds.

NodeCore Nature: Revised
Warr1024

Updated, fixed, enhanced edition of Winter94's NodeCore Nature

Glowshrooms
rudzik8

Adds glowshrooms

Euthamia
Avicennia_g

Grassy Goldenrod plant for Nodecore

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Algae
Just_Visiting

Algae mapgen addition to "Minetest Game"

Base Modpack
karlexceed

This combines several other mods that I consider a basic minimum starting point for worlds.

XaEnvironment
AiTechEye

A game that aims to contain lots of environments and things.

Valleys Mapgen
Gaël de Sailly

A map generator with valleys, rivers, mountains and many plants.

Plantlife
VanessaE

Adds various kinds of plants, fruit bushes, fallen trees, and a whole host of foliage and other ground cover.

More Trees!
VanessaE

Adds a whole bunch of new types of trees, some bearing fruit or similar, using biome_lib for the placement engine.

Caverealms Lite
Shara

A mod for Minetest to add underground realms.

Ethereal NG
TenPlus1

Ethereal mod uses the v7 mapgen to add many new biomes to the world.