Penumbra: Black Plague Gold Edition contains both Penumbra: Black Plague and the puzzle expansion Penumbra: Requiem. Trapped in a shadowy, underground complex, intrepid explorer Philip is determined to discover the truth behind his father's disappearance. Surrounded by enemies and assaulted by terror from all sides, Philip must collect clues and solve vexing puzzles while combating the gnawing psychological terrors that assail his mind and threaten to strip him of his sanity. Can Philip mas...