Gameplay: The game is played in rounds. Each player always has a hand of three cards, and a personal board depicting the five "holds" of their ship, into which goods can be loaded during the game.

Each round, one player is designated as "captain," with the next clockwise player being captain in the following round, and so on. The captain rolls two standard D6 dice, examines her cards, then announces which die will correspond to the "day" and which to the "night."

Each player then simultaneously selects a card from their hand and places it face down in front of them. Each card has two symbols on it, one on the left - corresponding to "day" - and one on the right ("night"). The symbols indicate either ship movement (forward or backward) or the loading of a type of good.

After every player has selected a card, all cards are revealed simultaneously and then resolved clockwise one by one, starting with the captain's. When it is a player's turn to resolve her card, for first the left symbol on her card and then for the right symbol, the player will load a number of goods or move a number of spaces equal to the number of pips showing on the corresponding day or night die for that round.

Thus the main decision each player makes during the game is which of their current three cards would best serve them on a particular turn, given the values of the day and night dice. Finally, during the race, when a player lands on a spot already occupied by another player, there is a battle.

Battles are mainly resolved by rolling a "combat" die, but players may improve their chances by using "gunpowder" tokens from their holds, if they loaded any on previous turns. The winner of a battle may steal some goods or treasure from the loser.