In the depths of the ocean, two submarine crews are engaged in a silent war, enemies forever. SONAR Family is a submarine battle game in which two teams operate a different submarine. Each player plays a crew member: the Captain or the Radio Operator. The game comes with 4 Double-sided Captain Sheets and 4 Double-sided Radio Operator Sheets. These are maps that are dry erase and are used to track movement and find the opposing team to sink their submarine. The two teams are divided by a screen blocking the view of each team’s maps. If one of the two submarines loses its second structure point, its team loses immediately. The team who sunk the submarine wins the game!   This is the family version of Captain Sonar

Captain Sonar: Upgrade One Expansion is the first expansion for the innovative and hit board game Captain Sonar. In Captain Sonar, up to eight players take on roles manning a submarine in a fierce battle against rival players. This new expansion adds new elements to your games, including five new scenarios, two brand new weapons, and different ways to play the Captain and Radio Operator roles. Together, these make your games of Captain Sonar even more compelling and exciting thanever before.