Usually it's pretty simple to destroy a house of cards, you just need to blow on it or to touch it with your fingertip. With Castle Solitaire it isn't that simple, the objective of this original solitaire game is to remove all the cards from the board, and this as quickly as possible. To remove a card from the board, choose a card that is one higher or lower than the one shown in the discard pile. Use the Wild Card at any times, any card can be played on top of it. You can also press "Undo", what will cancel your previous move. You can play the ace on a king or a 2. Good luck!