NatGeo Games: Ghost Fleet is a hidden object game that sends players deep into the ocean to inspect a variety of sunken ships. Gamers join Fiona Powell as she combs through 21 different shipwrecks scattered throughout the game's four chapters. Along the way, she will gather items, collect a dozen secret artifacts to unlock bonus content, and take on a variety of mini-game puzzles, all in an effort to track down her missing father. ~ Christopher Brown, All Game Guide