Players can open two game covers each time, if the pattern is the same, then two game covers for all players, if different, players must return to the game cover, other players to continue the game
The game card into the game disc. the hourglass is reversed, the player begins to remember the image, the sand leak is complete, the player with the game cover to block the pattern, start the game.
Two players change the game cover, until all match patterns are successful