 Each civilisation is deserted or almost deserted, with the people having recently left in mass exoduses.The player may visit the three civilisations in any order, but the Professor's journal claims that he visited them in the order listed; this is also the order of the game's four CD-ROMs.The player encounters a robot which appears to be constructed out of energy in each civilisation; this robot is not named in the game, but is referred to as "The Guardian" in official materials.