Signlike letters
limafresh

Adds sign-like letter nodes.

computer
Giga_M

Add a computer with basic functions.

Colored Sand
LoneSurvivr

Adds dyed variants for the default sand.

My Paint Wood
Don

Paint wood

The Nether Reactor
Darth

The Nether Reactor from MCPE, added to Luanti!

My Rocks
Don

Places rocks around the world

Rainbow Source
Shara

Adds coloured water.

Time Travel
Red_King_Cyclops

Adds in a craftable time machine that can be used to time travel to different time periods of Earth's history.

Bunker Block
Spooks

Add blast proof concrete and its craft items.

Cube Mobs
Xanthus

Adds various cube mobs with different abilities using mobkit.

Splooshy Bombs
ekl

Block-flinging explosive weapons (grenade and RPG)

My Wood Slopes
Don

Make slopes with wood blocks.

Ancient Bones
karlexceed

Adds bones with loot to dungeons.

French Toast!
RasPiManiac

Adds French Toast. That's it.

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Simple Shooter
stu

First person shooter mod.

X-Fangs
Knightech86

This adds sund powerful suits

Blox
mt-mods

Adds lots of differently colored and textured blocks.

My Torches
Don

Changes default torches to ones that burn out and cause damage

Dragonbone Stuff
Robot10&Scheletor

Adds dragonbone set

Wildflower Fields
mzs.112000

Adds a wildflower field biome to Minetest Game.

Advanced Weapons
LMD

Adds a variety of advanced weapons.

Randomized Map-specific Ores
Piezo_

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

Technic Recipes
alerikaisattera

Extra recipes for processing various items with Technic machines

Movement Essentials
Daniel

Adds umbrella for slow fall (hang gliders), consume mese crystal to recall (return to spawn), and throw fragments to teleport.

Real Torch
TenPlus1

Realistic torches that go out eventually and drop in water

GC Gamemode
stellarorion

Easily switch between the survival and creative inventory

Ethereal: All-faces tree blocks
1F616EMO

All-faces tree block for Ethereal trees

Pink Lava
TenPlus1

Adds pink lava to certain depth of map with new mahogany obsidian block

Ham Radio
techniX

Radio transmitters, beacons, and receivers

Atium
GenesisMT

A strange a ore with tools.

Sun Flowers
Hybrid Dog

This mod generates flowers which close their heads at night.

Cute Pie
Don

Cute blocks

More Snow
Sokomine

snow and wool for stairs - nicer winter landscape and snow-covered roofs

Node houses
MatyasP

Node houses is a mod by MatyasP that adds one-node block of houses, for crafting using items from mode default.

Better Ice
TheFanne

Modifies ice so that it melts into water when broken, and will be melted by torches

Lapis Lazuli
LNJ

Adds lapis lazuli ore, items and blocks.

obsidian
Giga_M

more uses for obsidian

Fire extinguisher
SkyBuilder1717

Adds fire extinguisher, which can extinguish some fire

Kotatsu Tables
Piezo_

Adds a new piece of furniture based on Japanese kotatsu tables