40 Thieves Solitaire is a classic card game available on the iPhone platform. The objective is to strategically move all cards to the 8 foundation piles located at the upper right corner. Players must build the foundation piles in suit from Ace to King, utilizing the 10 middle piles to temporarily hold cards during the game.

In this game, you can only move one card at a time and place it on another pile if it is one rank lower and in the same suit. If you reach a deadlock, you have the option to turn over a new card from the facedown deck in the top left. Be cautious, as the game ends if you exhaust all stock cards without successfully placing all cards on the foundation.