Biomes

Biomes are entire areas of the world with their own blocks, plants, mobs and more. Alex's Caves adds 5 new rare biomes, all of which generate in the lower portions of the Overworld.

Biome Overview

Biome name	Description	Screenshot
Magnetic Caves	Dark cave biome full of glowing Neodymium crystals and Galena. Home to many powerful mechanical and magnetic creatures such as Teletor and Magnetron.
Primordial Caves	Bright, verdant and expansive cave biome kept lit by glowing Ambersol on the ceiling, populated with numerous prehistoric creatures such as the dinosaurs Grottoceratops and Tremorsaurus.
Toxic Caves	Dark, dangerous cave filled with bubbling Acid and radioactive Uranium, filled with apocalyptic ruins and monsters like Brainiacs and Nucleepers.
Abyssal Chasm	An underwater biome found exclusively underneath surface oceans, filled with Tube Worms and strange ruins. Home of the mysterious Deep Ones and dangerous Hullbreaker.
Forlorn Hollows	Extremely dark biome composed of Guanostone and brimming with evil forces. The dangerous Underzealots patrol this place, looking for sacrifices to create Watchers and Forsaken.