In Demon Solitaire the goal of the game is move all the cards to the 4 foundation piles located in the upper right corner of the game. The foundation piles are built in suit from A to K. You can use the middle 4 piles to hold the cards temporarily while you build up the cards in the foundation piles. Build the middle piles up in descending order with alternative colors. If you have used all the stock cards and cannot put all the cards on the foundation, then it's game over.