44 Thieves is a two deck solitaire game along with three variants.
Totally free. No in-app purchases.
The objective is to move all the cards onto the eight suit foundations. Tableau columns build down suited, but only the top card can be moved. Empty columns can be filled with any card.
44 THIEVES - The classic game. You get one pass through the reserve pile one card at-a-time.
44 NINJA - The covered tableau cards are hidden.
44 BANDITS - Stacks of ordered cards can be moved.
44 PIRATES - Cycle through reserves deck 3 cards at-a-time.