There is no doubt that genre is a very important factor in a screenwriter's attempt to create a highly marketable film. Considering genre types when writing a script for an upcoming film is important not only for the target audience, but also for the technical characteristics of certain genres. Each film created is classified into a specific genre based on elements of that genre type, as well as accompanied by technical aspects that classify a film as a specific genre type. Some films are aimed exclusively at one type of genre, while in other cases the film gets the classification of different genre types. Sound, cinematography, mise-en-scène, editing, and narration are the formal elements of film that help determine a final product in a genre class or multiple genre classes. Yet, even dwelling in subcategories of major genre types, such as science fiction or action, films also have the ability to change genres within their screen time and not only be placed in a genre category, but also to skip genre types. This is caused largely by the blending of genre types that have elements that complement each other well and can be easily transferred from one type to the next. Where Ridley Scott's Alien (1979) prequel series Prometheus (2012) began with the science fiction genre and develops a smooth transition into horror, Joss Whedon and Drew Goddard's Cabin in the Woods (2012) turns the two genres on their heads, starting as a horror genre. rather than transitions into a science fiction category. Prometheus begins with a depiction of an unknown planet, panning across uninhabited landscapes and remote locations while slow-tempo orchestra music plays over the shots. It eventually opens up to show some sort of circular disk suspended above… in the center of the sheet… of all sorts, and each film made has many different cinematic genre qualities that make it one of a kind. . Both Prometheus and Cabin in the Woods are clear examples of this creative genre flow and change over the course of a film and its narrative. Works Cited Abbott, Stacey, "Final Frontiers: Computer-Generated Imagery and the Science Fiction Film" Science Fiction Studies, vol. 33, no. 1, Technoculture and Science Fiction (March, 2006), pp. 89-108Bereit, Virginia F. “The Genre of Science Fiction,” Elementary English, vol. 46, No. 7(NOVEMBER 1969), pp. 895-900, Published by: National Council of Teachers of EnglishHodsdon, Barret “The Mystique of Mise-en-scene Revisited” Continuum: The Australian Journal of Media & Culture, vol. 5 no. 2 (1990) Merriam-Webster "Science Fiction." Merriam-Webster.com, ndWeb. December 13th. 2013.