Director Jordan Downey did all the film's special makeup effects as well as all the makeup for the actors.
Composer Nick Soole approached the film's score as if it took place on a medieval planet. He wanted there to be a sense of something otherworldly and unsettling about the music in the film.
Gaffer Chad McClellan also plays the archer seen at the distance by the castle. He was the only available person on set that day.
Shot in and around the remote village of Soutelo Mourisco in the countryside of northern Portugal.
Director Jordan Downey found Cora Kaufman by writing the principal at a local elementary and asking about students who were interested in acting.