From the introduction:
The world is covered in murk...
It is more than just darkness. It is a miasma that hates the light, devours flame, and warps the living. Somewhere, in that hungry dark is a Nightwell, and near it a Shade—a creature born of the Murk itself, and not just twisted like the beasts that it creates. Your lands are threatened, and someone must bear the Silver Flame to the Nightwell to close it. If you’re lucky, you might make it back with treasures from the world before the Murk. If you’re careful you might just survive your expedition into the dark.
Into the Dark is a game about delvers who brave a strange and alien darkness-covered environment to protect their homes, and in the process hope to recover valuables and find information on the world that existed before the dark.
This game focuses on using wits to overcome obstacles, life and death struggles, and exploration of unfamiliar and dangerous environments. It mixes familiar dungeon-delving fantasy themes with a post-apocalyptic horror-tinged world.