NodeCore
Warr1024

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

Dais Ex Machina
Warr1024

An other-worldly platform to preserve some of your stuff across map resets for NodeCore

Ocular Networks
mt-mods

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

Visual Bots
Nigel

Visually programmable turtle bots

Mesecons
Jeija

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

Pipeworks
mt-mods

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