The Mac and Linux versions of Penumbra: Black Plague are now available for $19.99 and can be obtained by visiting this website, Frictional Games announced. 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.
In related news, the alpha demo of Unbirth, an old first person real-time rendered adventure horror game, is now available.

Unbirth Alpha Demo (156.89MB)