The Azure Abyss, a large perforation inside the crust of the Earth tinted blue by the light from the moon. The blue light has mutated the cave and the creatures inside it, creating twisted monstrosities.
You are Indigo Pilfer, a scientist forced down into the abyss by his boss to find the secrets of what lies below. Use your weapon to combine elements in order to defeat the monsters in the abyss, your wits to get around the interwoven cave systems, and your bravery to make it to the bottom and perhaps you'll make it out alive.
