This game is build around the 3D of a submarine that can be manipulated in three ways. You can navigate it by turning it 45 or 90 degrees or adjust it's diving level by playing the corresponding action card. Subsequently you may retrieve the treasure token that is lying on the destination square. Treasure tokens are placed in a personal 3x3 scoring grid. After each of three rounds the collected tokens are scored horizontaly. At the end of the game each column is also scored vertically.