Ported from PC and re-designed to incorporate the Wii's rumble and motion capabilities, Secret Files: Tunguska is a point-and-click adventure game in which players follow the story of Nina Kalenkov, daughter of a famous scientist. The tale begins with the scientist's unexplained disappearance, following the "Great Siberian Explosion" that took place near Russia's remote Lake Baikal on the morning of June 30, 1908. Believed by many to have been the result of a comet or meteorite that blew up in midair -- in part due to eyewitness accounts of a column of light that preceded the estimated 15-megaton blast -- much mystery yet surrounds the cataclysmic event (even 100 years later). Some have speculated that the explosion instead was related to a radioactive volcano near the devastated region, while others have pondered such causes as miniature black holes, antimatter bombardment, and even alien visitors from outer space. In the role of Nina, adventure gamers have an opportunity to investigate for themselves. ~ T.J. Deci, All Game Guide