If in brief I can tell the following: the World in which this couple lives, has once been occupied by people. Not simply people, and natives from the Earth. But, by virtue of features of the given world, there was possible to develop not only technics. Are developed there were ekzo-disciplines (aka sorcery, weds (psy-disciplines), alchemy, magic, a geocloak, an appeal, prestanding, charms... etc). By virtue of that contact to the пра-native land was impossible, the level of technics fell, but dews уровнь ekzo-disciplines. [skip a period]
Nobody can recollect — it was natural distortion or the super-power form exzoblast, but has burst Dissolution. People have found features of animals, and animals of people. Impossible mixes have died out almost at once. Pure the few were kept. The rests of a civilization have almost failed. However Dissolution has made all more hardy. Finding the rests of human culture, following by the animal, trying to find synthesis, but the civilization was restored. [skip a period]
At present the level of development of the world approximately corresponds to times of a gain Spaniards of America, with those amendments that it is necessary to make on ekzo-disciplines. Are widespread artefacts, the cold steel is widespread. It is possible to meet the powder weapon less often. Climatic conditions are dictated with that fact, that few continental formations. The largest «base» in size with New Zealand. Warm enough.