Cube Zero is a 2004 Canadian psychological thriller/horror film, written and directed by Ernie Barbarash. It is the third film in the Cube film series, but is a prequel to the first film. Even though the first two films take place almost entirely within the maze, Cube Zero takes place in both the interior and exterior of the cube, making significant use of outdoor scenes. This movie explains the origins of the Cube and the people that control it.