Shot with a 5-page script.
The cast consists of professional dancers with no prior acting experience, with the exception of Sofia Boutella who is the only professional actress. Although Boutella had the dancing experience that the part required, she hesitated to join the film since there was no script. Director Gaspar Noé encouraged his cast to improvise extensively, with the only limitation that they couldn't reference contemporary things like smartphones, since the story is set in the 1990s.
The second half of the film is made up almost entirely of a single unbroken 42 minute long take
It took between 15 and 16 takes to shoot the first ten-minute opening scene which is all one continuous shot.
Shot in 15 days.