A series of increasingly tenuous efforts by various producers to capitalize on the Zombi name in multiple countries ensued.
While it follows the Italian series in proper order, it ignores Dawn of the Dead as the first entry, and instead starts with Zombi 2, adding the unrelated film Oltre la morte as a third installment.
[2] The Australian version of the series uses roman numerals and is composed of sequels only, most of which are re-titled Italian films.
Although the American series begins with Zombi 2 and continues in the established sequence, some of the films were re-titled again and the titles do not follow in numerical order.
Two additional films were released on home video with titles that would imply that they were sequels, but which had nothing to do with the Italian series.