Draconis
ElCeejo

Adds advanced Dragons and powerful equipment.

Nether
PilzAdam

Adds a deep underground realm with different mapgen that you can reach with obsidian portals.

Nodeverse
aerkiaga

A procedurally generated space exploration game

Antipyre
Warr1024

Safety net against falling off your island

Death Position
DiamondPlane

Adds a command to return back to position where you died

Ocular Networks
PolySaken

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