PaleoTest
ElCeejo

Adds Prehistoric Fauna and Flora to Minetest Game

Ocean
StarNinjas

Adds coral reefs, fish, decorative ocean blocks and much more!

NodeCore Stairs
Warr1024

Adds an assortment of stairs and slabs to NodeCore

Multiple Biome Generator
chaosomnium

230 Pseudorandomly Generated Biomes, Trees, Fruits, Ores, Tools, and Liquids

Dirtcraft
dayer4b

Adds automatic crafting recipes for making most kinds of dirt

Bridges and stairs, factory-style
narrnika

Adds a steel bridges, railings and stairs in Minetest.

New Factory
theFox

Industrialization for minetest

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

SkyRealm for NodeCore
Warr1024

SkyBlocks inside vanilla NodeCore

PaleoTest for Hades Revisited
SFENCE

Adds Not Only Prehistoric Fauna and Flora to Hades Revisited.

Gizmo's Of Carbon Machinations
ThatGhzGamer

Adds various charcoal related items such as a Marvelous Hammer to Compress things, New Gear, New Diamonds, Charcoal and Willow Charcoal.

Poly Decor
PolySaken

My spin on decorative stuff.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Ocular Networks
PolySaken

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