Ozploitation films are, according to Wikipedia
a type of low budget horror, comedy and action films made in Australia after the introduction of the R rating in 1971. The year also marked the beginnings of the Australian New Wave movement, and the Ozploitation style peaked within the same time frame (early 1970s to late 1980s). Ozploitation is often considered a smaller wave within the New Wave, "a time when break-neck-action, schlock-horror, ocker comedy and frisky sex romps joined a uniquely antipodean wave in exploitation cinema."
The vast majority of the films listed here are mentioned in the Ozploitation documentary Not Quite Hollywood.