The players control two personages who play against evil creatures. Each personage can move around the screen between the bricks and can push one brick at a time. However, one of them can push bricks only up and down, another one to the left and to the right. On one hand, each player has full freedom of action, but on the other hand, very quickly the players understand that they have to cooperate with one another. Creatures are aggressive and any contact with them is mortal. The situation of the game creates common interests on the basis of the same goal. Communicating during the game to achieve this goal the players unite.
