Asked about the explicit sex scenes between Petra Morzé and Andreas Patton, director Götz Spielmann said he chose actors in whom he sensed the courage and curiosity necessary for this task. "I told them I wanted them to go as far as possible, without taboos. We'd find out how far that was when we got there. Then for two days we talked through the scenes point by point, in complete detail and without inhibitions, discussed every second of these scenes - completely and candidly. What does the character feel, what gets him/her excited, why? What kind of power relationships are at work? At what point do they change? And so on... What turned out well - and this is what is often the problem in sex scenes - is that the actors were always aware that they were characters, that they were playing the story and sexuality of characters. That gives you protection, lets you take greater risks. Because of this, the shoots were very exciting and sometimes really moving."
Director Götz Spielmann explained that, "Antares is the largest star in the constellation of Scorpius, a red binary star. The name is from the Greek and means "anti-Mars." The film comprises three interconnected stories that are in a sense three "Scorpio stories" with intense emotions, both positive and negative: sex, jealousy, violence, crisis and death."