The film was shot in autumn 1981 under the working title 'Follia del potere'.
Alternative uncensored version contains an additional 20-minute orgy scene including the infamous and complete horse sequence inserts.
The film has a running time of 105 or 125 minutes depending on the presence or absence of the 20-minute x-rated sequences (inserts).
Features virtuoso framing and boldly technical cinematography, making an effective and evocative movie with daring underwater camera shots, vaporous dream scenes, and huge tableaus of debauchery, as when the Vestal priestesses are deflowered underwater by some centurions armed with strap-on swords.
Even if this one had nothing to do with the original Tinto Brass' Caligula (1979)'s plot, it's still considered one of the best exploitation versions and photocopied spin-offs from the era. A highly-disruptive work of eroticism and violence with equal cutting-edge - if not accurately or remotely historical - intrigue.