There isn't a single word of dialogue in the film.
Director Christopher Reith mentions Shin'ya Tsukamoto's 'HAZE' and Darren Aronofsky's 'PI' as a huge inspiration for the film.
The film has three Easter Eggs, which reference 'Jacobs ladder' , 'Uzumaki' and 'SCP Containment breach'.
Although the main character has no name, he is referenced as Ziven in pre-production notes.
Director Christopher Reith story boarded the entire film by hand, it was 87 pages long.