Each player has 15 colored balls representing there boarding parties these are move by the throw of two specialist dice. The board has preset movement paths and a rotating playing board that alternatively allows all movement paths to be used and then opens some holes which your pieces can fall through. The aim of the game is to capture the other ship by getting 6 of your colored balls on the deck.Pieces can be lost be either being captured by the other side when they are landed on, or they can fall through holes that open up when the board is rotated. - BoardGameGeek