Blind Business is made up of a deck of 50 cards, numbered from 1 to 11 in 4 groups of different colors plus 6 jokers. At the start of the game, each player receives 4 cards from the deck. After seeing them, you will have to shuffle them and put them in view of the rest without knowing in which position each card has been left. On each turn, the active player must request a card from an opponent, which they can accept or refuse. In case of refusal, the opponent wins the requested card and places it in his play area for scoring at the end of the game, while the active player can keep any of the other cards in that player's hand. If instead the opponent accepts the offer, he may claim a card from the active player's hand in return. In this case, the active player can accept the deal, with which both will get the desired card, or refuse, so that each one will put the card from their hand that had been the object of the deal in their play area. Finally, the players replenish their hand to have 4 cards, which remain visible to all players and unknown to their owner. The cards are arranged in columns according to their color in the playing area of each participant. The colors correspond to the four zones in which the city is divided: the playground, the boardwalk, the central station and the downtown. At the end of the game, depending on the majorities, the players will earn more points according to the combinations of cards they have. It is also possible to win if someone gets five consecutive cards of a single color... Watch out for your rivals movements!