Double Deck Klondike Solitaire differs from the usual Klondike Solitaire in that there are used 104 cards instead of 52. In other words, 2 standard decks. It makes the process more difficult, but at the same more interesting. There are 4 base cells and 4 free cells. At the start of the game they are all empty. The rules of the game remain the same. Well, this time you have 15 minutes for your game. This gives you the opportunity to get maximum enjoyment from this game.