There are more than ten different, small, animated monsters in the game who shuffle their feet and look around trying to avoid being noticed. They are hiding, alone or in groups, from the player who is a simple stick figure in the lower left of the screen. Played in portrait orientation, the monsters take shelter on a never-repeating assortment of bizarre structures, on a gameboard filled with obstacles and barriers that make for some very complex ricochets. Depending upon the composition of the item, it will emit a particular sound when hit by one or more gemstones bouncing off surfaces at various speeds. The object of the game is to clear the board of all the monsters, earning one, two, or three stars depending upon the number of gems required. When all the monsters are gone, the player moves to the next stage.