Working villages
theFox

A mod adding villager NPCs that are doing predefined work.

New Factory
theFox

Industrialization

Pumpkinspice
GreenXenith

Adds pumpkinspice stuff.

Halloween
GreenXenith

Adds Halloween candy and costumes.

Mobs Animal
TenPlus1

Adds farm animals.

Christmas Decor
GreenXenith

Christmas-themed decor

Mobs Redo API
TenPlus1

Simple and feature rich API to quickly add mobs into your world.

Crops
sofar

This mod expands the basic set of farming-related crops that Minetest Game offers.

Tac Nayn
GreenXenith

Adds Nyan Cat's evil twin, Tac Nayn (and a gray-scale rainbow).

Caverealms
HeroOfTheWinds

Adds underground realms.

Ethereal NG
TenPlus1

Adds many new biomes, items and mechanics into the world.

More Blocks
Calinou

Adds various miscellaneous blocks.

Pipeworks
mt-mods

Supplies a complete set of nice, round mesh-based water pipes, boxy item-transport tubes, and devices that work with them.

Handholds
Shara

Adds a climbing pick which creates handholds in stone, desert stone, sandstones and ice nodes.

Unified Inventory
RealBadAngel

Replaces the default inventory and adds a number of features, such as a crafting guide

Technic
RealBadAngel

Extensive machinery mod with electricity and ores.

Under Sky
Shara

Skybox switch for really dark caves

More Ores
Calinou

Adds new ore types.

Awards
rubenwardy

Adds achievements

Digilines
Jeija

This mod adds digiline wires, an RTC (Real Time Clock), a light sensor as well as an LCD Screen.

3D Armor
stu

Visible player armor & wielded items.

Homedecor
mt-mods

Feature-filled home decor modpack.

Mesecons
Jeija

Adds digital circuitry, including wires, buttons, lights, and even programmable controllers.

Waffles
GreenXenith

Waffles. That's it.

Farming Redo
TenPlus1

Adds many plants and food

Intllib
kaeza

Internationalization library.

Signs Lib
mt-mods

Adds signs with readable text.

Caverealms Lite
Shara

Adds underground realms.

Warp Potions
Shara

Cost per use potions teleport system designed for survival servers.

Unified Dyes
mt-mods

Unified Dyes expands the standard dye set from 15 to up to 256 colors (depending on the object to be colored)

Capture the Flag
rubenwardy

Two or more teams battle to snatch and return the enemy flags, before the enemy takes their own!

Stairs Redo
TenPlus1

Adds more stair types.