The Zombi series refers collectively to horror films that have been marketed, in various territories, as sequels to either George A. Romero's Italian-American film Dawn of the Dead (1978) or Lucio Fulci's Italian film Zombi 2 (1979). The latter was itself marketed by Italian distributors as a sequel to the former. A confusing history has emerged from the practice of reworking films as Zombi movies for release in different countries, a process during which a film may be given a different title in each country where it is released. In Britain and Thailand, these films were released as the Zombie Flesh Eaters series. In North America and Germany, the films became known as the Zombie series. The films maintained their original spelling, Zombi, when released in Australia and other select countries.