Marty has issues defecating in the novel. This was dropped from the film.
The bulk of this movie was shot with a hand-held camera.
"Found" is based on the novel by Todd Rigney, self published by iUniverse in 2004.
The movies-within-a-movie "Headless" and "Deep Dwellers" were both shot prior to principal photography.
"Headless," a movie-within-the-movie, was filmed at the Woolery Stone Mill in Bloomington, Indiana, which was also a filming location for the 1979 best picture Oscar nominee La bande des quatre (1979).