Secret Files: Tunguska - Nintendo DS Intuitive stylus based controls, with an additional D-pad options and search ability. Classic point-and-click adventure for Nintendo DS/DSi game systems. Based on the historical 1908 Tunguska event in Siberia in which hundreds of square miles of wilderness was mysteriously leveled under unexplained circumstances. More than 100 highly detailed locations that include atmospheric weather conditions. Spectacular cutscenes with English audio recordings and scrollable background over several screens.