You are a crew of fearless vikings, at sea with your mighty longship. Navigating such a ship through the dangers of the open sea requires good coordination and a skillful drummer determining the beat. During the game, players chant "Drakkar...Tum...Tum...Tum", and on the third "Tum", the active player must place a card on one of the ship cards that make up the longship, and draws a new one while chanting continues. Next time the players reach the third "Tum", it's the next player's turn, and so on. However, the cards that are placed can change the rhythm. If a danger is revealed, there will be only two "Tum"s, with a second danger, only one. If a third danger is revealed, players los the game. Dangers can be covered with certain cards to regain the original rhythm. Other action cards can reverse the turn order, for example. During the game, players can discover island cards. If they discover three islands and can finish the draw pile, they win. A player that plays out of turn or out of rhythm does not draw a new card. Everyone also loses if any one player runs out of cards to play.