We invite you to our puzzle zoo called ZooJong. It is a mahjong pyramid, on the tiles of which are placed various types of animals and birds. Your task is to go through forty levels, opening on each cage with the next inhabitant of the zoo. To open, you must remove all tiles from the playing field. Search and remove pairs of free tiles with the same image. Be careful and you will quickly cope with the task. Once all the tiles have been destroyed, the cage will open and the animal will be free in ZooJong.