In each stage of the game, there will be several mailboxes and paper planes with the same quantity. The planes will fly in special path within one side of the screen, and they will reappear in the other end after they fly out of the screen. When the player clicks on the screen, the paper plane will fly out in the direction of the arrow accordingly, and the player will fail the game if the plane doesn’t fly into any mailbox. The plane will disappear if it flies into the mailbox, which will fade away later. The game seems easy to play, but it actually contains the truths of life, so just come and take the challenge!