Bidding box for home-played games. Use of bidding boxes has several advantages over oral bidding: it reduces noise in the room, prevents bidding being overheard at neighboring tables, allows easier review of the auction, and reduces the opportunity to pass unauthorized information to one's partner (intentionally or not) by the manner and intonation in which one makes one's bid. A bidding box is typically a plastic box with two slots, each containing a set of bidding cards. One slot contains 35 cards with symbols of bids (5 denominations—clubs (), diamonds (), hearts (), spades (), and notrump (NT)—in seven levels of bidding,
Marjapussi player who is not starting a new trick cannot follow suit and trumps have been declared, the player must play a trump. If the player cannot follow suit or play trumps, the player can play any card. If possible within the previous restrictions, the player must always beat the high card in the trick. The trick is won by the highest trump, or if there are no trumps in the trick, by the highest card of the suit led. When a player has won a trick, he may declare trumps with a king and a queen of a same suit.