Five-suit bridge called "Castle Bridge", in which the fifth suit of Castles looked like a Rook chess piece and was colored green. This pack reused the diamond courts for the new suit. The manual that came with this deck did not use Marseille's rules but Ammiel F. Decker's 1933 rules. Ultimately, the complexity of adding a new suit to the game led to it falling out of popularity by the summer of 1938. The rules are similar to regular contract bridge but the new fifth suit is ranked higher than spades but lower than no-trump in bidding. Decks usually came with one
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.