Every sound heard during the entire movie; voices, water, footsteps, chains etc.. was later ADRed.
Through the use of split screens and camera angles, actors Adam Ropp and Peter Zhmutski never acted together during the movie, yet their characters shared the same 8ft X 10 prison cell throughout the story.
Filmmaker Adam Ropp created the plot of Green Demise from a ghost story read to him when he was 9 yrs old.
Ropp filmed 90% of his acting scenes entirely by himself