Adds a dimension that is inspired by the game LIMBO, can be accessed in survival and offers a unique survival experience, and special loot. For best immersion, turn off shaders and set the render distance lower so the fog is all around you.
Arda's Sculks mod is a mod that improves the ancient city in the game and offers the ability to open the ancient portal in the ancient city. This mod adds many deep dark biomes to the game and many boss creatures found in these biomes.