Paradox Interactive has announced that Penumbra: Black Plague, the final chapter in the Penumbra story developed by Frictional Games, has shipped to retail across North America. Penumbra: Black Plague is a creepy and dark psychological horror experience featuring the adventures of Philip as he sets of in search of his dead father. 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. Three new screenshots have been added in our gallery - a playable demo is locally mirrored here.