Thief! is a card game which you play casually on your free time, like a solitaire.
The aim is to put all the cards in the final destination, from ace to king, with the same color.
For that, you have 4 temporary areas in the middle, where you can put one card at a time.
In the bottom, you have 6 areas which will be filled when clicking on the top left deck. Each time you touch the deck, there are 6 new cards spread over the 6 bottom areas.
Have fun!