Secret Files: Tunguska for Nintendo DS is an adventure point-and-click game that plunges players into a puzzle-filled mystery inspired by the real-life Tunguska event of 1908. Players follow protagonist Nina as she searches for her missing scientist father, unraveling a conspiracy that spans the globe. With its rich narrative, intriguing puzzles, and well-crafted visuals, the game offers an engaging experience that tasks players with solving riddles, interacting with interesting characters, and uncovering secrets hidden within historical artifacts.