The deck contains 80 Sea cards in five suits. The five suits are represented by different colours and icons. Each suit has one card of each value; a higher card beats a lower card of the same suit - high (15) to low (0).

Depending on the number of players, a set number of cards from a set number of suits will be shuffled together. Players can decide in advance to play as teams, or each player for themselves. Each player will be dealt 10 cards to create their hand. In a clockwise manner, each player will contribute one card, chosen from their hand, to create a trick.

In each trick, one suit will be stronger than others (trump). Any card in this trump suit beats all cards not in the trump suit. A Sea Change will change the trump suit in the middle of a trick when a player matches the value of the last card played.

Players attempt to win tricks containing cards with positive points, and avoid cards with negative points. *Important* During tricks, 0s are not worth any points. At the end of the round, check which suit is trump. The 0 from that suit, and only that suit, is now worth 5 points. All other 0s are not worth any points.

The player with the highest score at the end of the round will earn 1 Victory Point (VP). The game ends when one player has earned 3 VPs.