Castle Solitaire Visit the 10 most beautifull Castles in this game and play a Solitaire and a Difference Game. In the solitaire game you have to remove all cards by playing a card that is 1 higher or 1 lower in value then the card on the discard stack. Use the temp areas if you have no valid option to play. In the difference game you have to find all differences between the 2 castle images. Use the hint button (only selectable with the mouse hand) if you are stuck.