Following the death of his mother, Philip receives a letter from a dead man â€“ his father. The letter insists he burn a particular book, but he studies it instead. Following clues in the book, he is led to Greenland. Caught in a deadly snow storm, he finds refuge â€“ or so he thinks â€“ in a strange metal hatch in the snow. Entering the hatch, Philip steps into the unknown and must use his wits to solve puzzles and unravel the mystery of his past. Featuring cutting-edge technology, the player can open drawers, pull levers, pick up objects, and more using natural mouse movements, creating a highly interactive and immersive game world. "Penumbra: Overture" is scheduled for release May 7, 2007 and will make its retail debut at $19.99 (USD). The game is not yet rated by the ESRB.