Pyramid Solitaire is an addictive game available on iPhone that challenges players to clear all the cards in the pyramid. The objective of the game is to remove pairs of cards that add up to 13. The game starts with 21 cards arranged in the shape of a pyramid, with successive rows containing from 1 to 6 cards. Each card is overlapped by 2 cards from the row below, creating a unique and visually appealing pyramid structure.

To clear a pair of cards, they must be completely visible and not covered by any other cards. Players can select two cards that add up to 13 (e.g., a 10 and a 3, or a Queen and an Ace) and remove them from the pyramid. The game continues until all the cards have been cleared or there are no more available moves.

Pyramid Solitaire is a great way to pass the time and test your strategic thinking. With its simple rules and addictive gameplay, it's easy to get hooked on this challenging card game. Whether you're a casual player looking for a quick game or a dedicated solitaire enthusiast, Pyramid Solitaire is sure to keep you entertained for hours.