Are you all alone and have nobody to play a fun card game with? Then, play Solitaire. Solitaire is a challenging card game you play alone. You put the cards into seven piles, the bottom card is open. You can turn more cards open, by placing cards on top off each other. This can only happen if they are alternately black and red and counting down in numbers. The intention is that eventually you can discard all cards in four piles, starting with the A's.