The object of the game is to guess the location of the ships each player hides on a plastic grid containing vertical and horizontal space coordinates. Players take turns calling out row and column coordinates on the other player's grid in an attempt to identify a square that contains a ship.
Each player receives a board with two grids, five ships, and a supply of hit and miss markers (white and red pegs). One of the grids is used by the player to "hide" the location of his own ships, while the other grid is used to record the shots fired toward the opponent and to document whether those shots were hits or misses. The goal of the game is to sink all of the opponent's ships by correctly guessing their location on the grid.