In 1974, when independently released in Japan there was an unrated version with at least 10 minutes of extra horror and story plot. This was before Avco Embassy Pictures purchased it worldwide. The next year (1975) it premiered in America with a PG rating. Then yet again as an Avco re-release with new artwork in (1976). In (2011) Grindhouse Releasing Corp. will be touring the country and abroad with new prints of the original unrated/uncut version.