Fortunes is a trick taking tarot game where the Major Arcana can change the rules for a hand. Its based on a fantasy world where they literal gamble with their fates using this game. If you are losing a hand and you can't follow suit you could use a Major Arcana card to switch the hand from high to low and make your partner win the trick.
got rid of sliding hand of cards and added visible hands for other players. Hopefully this will give more of a sense of what is going on with the game.