 In each level , the player may come across one other player temporarily connected to their game . When players approach each other they charge one another 's <unk> . They cannot communicate with each other beyond patterns of singing . Players can help each other by activating strips of cloth or showing paths , but cannot hinder each other and are not necessary for completing any level . When two players finish a section at the same time they remain together into the next one ; otherwise they are connected to new players when they move on . While all of the figures generally look the same , without gender or distinguishing characteristics , individual players can be told apart by unique symbols which are shown floating in the air when they sing and are displayed on their robes at all times . The entire game takes about two to three hours to complete . 
