Castle Solitaire is a free and fun new card game from MobilityWare, the maker of all your favorite solitaire games. In this fast and easy to learn game, you can build your castles and fly your banner high! To win at Castle Solitaire, fill the four castles from Ace to King. Tap to arrange cards of the same suit in descending order below the castles. If you get stuck, just tap the stockpile to reveal more cards to use. Castle Solitaire is similar to Vanishing Cross or King’s Corner, but with it’s own special twist.