The shell game (also known as thimblerig, three shells and a pea, the old army game) is portrayed as a gambling game, but in reality, when a wager for money is made, it is almost always a confidence trick used to perpetrate fraud. In confidence trick slang, this swindle is referred to as a short-con because it is quick and easy to pull off. The shell game is related to the cups and balls conjuring trick, which is performed purely for entertainment purposes without any purported gambling element. An ancient gambling game that originated from India and was called "The game with cups". The task is very simple - to find in which of the three thimbles is the ball. Google Play Games services are connected, which makes it possible to participate in the world ranking and receive awards.