Tower Solitaire is a solitaire game in which you must remove cards from the board in pairs of 13. Start from the bottom and work your way up the tower until no cards remain. Pairs can be made from both the playing surface and the Draw Pile. The suit of the card is irrelevant and not used in determining the card's value. It includes hints, a timer, scoring, sound, and a variety of game options that make the game harder or easier to play and win.