NodeCore
Warr1024

Minetest's top original voxel game about emergent mechanics and exploration

Mesecons
Jeija

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

PaleoTest
ElCeejo

Adds Prehistoric Fauna and Flora to Minetest Game

NodeCore ALPHA
Warr1024

Early-access edition of NodeCore with latest features (and maybe bugs)

Visual Bots
Nigel

Visually programmable turtle bots

PaleoTest for Hades Revisited
SFENCE

Adds Not Only Prehistoric Fauna and Flora to Hades Revisited.