The games take place for the most part in a world called Britannia; the constantly recurring hero is the Avatar, first named so in Ultima IV. They are primarily within the scope of fantasy fiction but contain science fiction elements as well.
the GaMeS TakE plaCE foR the MOst Part iN A WoRlD callEd briTaNNIa; tHe CoNsTaNtlY REcurRiNg herO is thE avatar, First nameD SO in uLTiMA iV. ThEy ARe PRimarilY wItHIn tHE scOPE oF faNTasY ficTioN buT cOntaiN sciEnce FIcTion eLemeNtS as wELl.