Draconis
ElCeejo

Adds advanced Dragons and powerful equipment.

Water Life
Gundul

new mobs for your river and sea water

Biome Lib
VanessaE

The biome spawning and management library.

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

XaEnvironment
AiTechEye

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

Caverealms Lite
Shara

A mod for Minetest to add underground realms.

NextGen Bedrock
StarNinjas

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

Algae
Just_Visiting

Algae mapgen addition to "Minetest Game"

Giant Mushroom/ Mushrooms
Hybrid Dog

Add mushrooms and giant mushrooms.

Caverealms
HeroOfTheWinds

A mod for Minetest to add underground realms.

NC Steam
Winter94

Adds new mechanics to Nodecore, such as steam power and dynamic water

Base Modpack
karlexceed

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

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Fireflies
Shara

Adds fireflies which can be caught in a net and placed in bottles for lighting.

Swamps
Hybrid Dog

Adds swamps

Generic moon of Saturn
Red_King_Cyclops

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

NodeCore Lignite
Winter94

Adds Lignite, an ore of coal.

Sedimentology
sofar

A mod that adds realistic erosion and degradation of rocks.

Sailing
cakenggt

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

Oxidizing Copper
StarNinjas

This mod aims to make copper/bronze more realistic by making them slowly oxidize into a bluish/green block when exposed to water.

Ores Stats
Hamlet

Provides informations about ores' percentages collected on map generation.