XaEnvironment
AiTechEye

A game that aims to contain lots of environments and things.

Nether
PilzAdam

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

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Hades Revisited
Wuzzy

You have stranded on the planet Hades. Use your limited supplies to survive and use terraforming to create a beautiful habitable place. (EARLY TEST VERSION)

Underground Challenge
Hume2

Explore all 62 underground biomes!

NodeCore Lignite
Winter94

Adds Lignite, an ore of coal. Now outdated, please use NodeCore Coal instead. See Below.

Grave
ElCeejo

Adds an eerie biome with multiple mobs.

Alive AI
AiTechEye

Advanced survivor ai mobs (npc, monsters and more)