3. Cube (1977)
Moving on to intelligent fare, it's Cube. Described as a science-fiction psychological horror in an effort to corner every market possible, this is the one Canadian-made film that is often on most cinephile's cult lists, as it thoroughly engages the viewer in its puzzle box mysteries. 6 strangers wake up in a box, with a door on every side, some booby-trapped. In order to survive, they must solve a puzzle before moving onto the next room. All rooms are either white, blue, red, amber or green. As the tension (and the deaths) increase, so, too, does the question of what is the Cube for... who made it and why? Shot as per Canadian specs on super-low budget by Vincenzo Natali, the Cube was actually only one room that was transformed into 5 different ones simply by changing the light gels. It even spawned a sequel which attempted to focus more on the origins and purpose of the Cube.