A group of prisoners are sentenced to certain death by exiling them to the secluded Mount Grimrock for vile crimes they may or may not have committed. Unbeknownst to their captors, the mountain is riddled with ancient tunnels, dungeons and tombs built by crumbled civilizations long perished now. If they ever wish to see daylight again and reclaim their freedom the ragtag group of prisoners must form a team and descend through the mountain, level by level.

A group of four prisoners have shipwrecked on the secluded Isle of Nex. The island is filled with ancient crumbled ruins, mysterious shrines and a vast underground network of dungeons and mines. If the prisoners wish to make it out alive, they have to overcome the challenges devised by the ominous mastermind of the island.