
The movie, directed by acclaimed filmmaker Erik Matti, is pioneering in its use of digital set extension via chroma key or "green screen" technology in all of its sequences. The film, arguably the biggest horror film of 2012, is shot entirely in green screen and utilises a combination of live action footage and three-dimensional computer graphics (CG).
In his rounds of radio promotions for the film starting with GMA's flagship radio stations DZBB (AM) and Barangay LS 97.1 (FM), Dantes expressed pride for his film, which took more than a year to create.