Not So Simple Mobs
TenPlus1

Adds a host of creatures into your world with new weapons too.

PaleoTest
ElCeejo

Adds Prehistoric Fauna and Flora to Minetest Game

Wilhelmines Living Nether
Liil

Adds various creatures to your Nether.

balrog (flux's fork)
fluxionary

adds balrogs.

Dmobs
TenPlus1

Release many new Dragons, Monsters and Animals into your world.

mime (flux's fork)
fluxionary

adds a monster mimicking its surrounding nodes.

Native Villages
Liil

Adds villages of native people to the world.

Witches
FreeLikeGNU

Helpful and unique witches inhabit the land adding a magical touch and interact with player! Work in progress, but playable!

lil lizard pal
Soundwavez

a minetest addon made by a very smart person, adds a node based lizard in a glass box to the game. (he can die if you dont feed him)

Slimes inspired by TheManaWorld
mt-mods

Adds several types of slimes inspired by TheManaWorld

the curse of the corngirl
Soundwavez

adds a creepy cornfield, with a dark secret...

Wilhelmines People
Liil

Adds the possibility to build living Villages. Trade items for random stuff from your villagers, recruit mounts and warriors.

Wilhelmines Living Caves Mobs
Liil

adds mobs to the caves of your world

Horror: Rescared
SkyBuilder1717

Fork of TX_Miner's Horror mod, but heavy modified with adding a lot of additional stuff.

HCBP 18_01 Parasite - beta
Soundwavez

Adds an Injector, Containing a sample of the HCBP 18_01 Parasite (Highly Contageous Blood Parasite). use on your enemys. and or your friends, if youre a backstabber!

Sunset Biomes
RisingLeaf

Adding two biomes and stuff around them.

Manny
ElCeejo

Adds Manny from that one Reddit post.

Mobs Skeletons
TenPlus1

Adds three skeletons to the world.

Wilhelmines Marinara Mobs
Liil

adds mobs to the marinara oceans

Wilhelmines Living Floatlands
Liil

Adds various prehistoric animals to your Floatland Zone, if you are using V7 Map Generator.

Simple Working Villages
ray_f_t76

An updated Fork of Working Villages, including new characters and a Mayor

Nssm Extra
TenPlus1

Even more creatures to add into your worlds

Nssb
TenPlus1

BIOME integration for nssm, the not so simple buildings.

Hardcore Farming
Neuromancer

Makes farming a hardcore challenge by adding very hungry pests. Can you overcome them or will they defeat you?

In the Fog
Jo5629_

Herobrine has entered your world.

Power Rangers Modpack
LC Creations

Adds power rangers and an API to create your own.

pilzmod
Phii

a spreading mushroom biome which you can spawn into the world, with its own monsters and a boss you need to slay to stop the biome's growth. Best played with bow & armor mod and after reading manual.

Nether Mobs
Dirkfried

Add monsters and dragons to your nether world.

Shadow Realm
archfan7411

The realm of shadows contains many hidden horrors.

Sneeker
AntumDeluge

An explosive nuisance.

BingFeng Maidroid
XYChen

An improved version of Maidroid, providing maid robots.

Ocular Networks
mt-mods

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

Throwable Bombs
DragonWrangler

adds a cave expansion tool, a throwable tnt stick, a throwable smoke bomb, and a mob throws tnt