Cruel is a solitaire card game where the player starts with the four aces in the foundations, and the remaining cards dealt into 12 piles of 4 cards each. The player can move the top card in any of these piles between the piles to build them down by suit, or to the foundations to build them up by suit. Whenever the player wants he can click the 'Shift' button on the bottom right of the game screen, just above the 'New Game' button. Doing this will cause all the cards in the piles to be picked up in order, and shifted back into 4 card piles. Note that this does not change the order of the cards, so if you click the 'Shift' button twice in a row without moving any cards it does not do anything. The player wins when he has moved all the cards in the deck into the foundations on the right side of the game screen.