Each player starts by putting, in order, one layer each in the card box while the other players don't look. When all cards are put in the box an upper layer finishes the process.Then each player tries, with help of the 'spade', to 'dig out' as many cards with plus points as possible. Those plus points are worth money. The player who has collected the most money when the game ends, is the winner.As soon as you stumble upon a minus card, you have to give the spade to the next player. You may also stop anytime before. - BoardGameGeek