The U.S. version of this film, titled "Frankenstein's Bloody Terror", had the first 10 minutes of it cut and an animated cartoon drawing-style prologue added to it that linked Imre Wolfstein to the Frankenstein family in order to satisfy
Samuel M. Sherman's need for a Frankenstein film to release to distributors at the time (1971). It was eventually released to U.S. theaters as the bottom half of a double feature with the film
Dracula vs. Frankenstein (1971).