Cube is a 1997 Canadian sci-fi/horror movie directed by Vincenzo Natali.

The film was a very successful product of the Canadian Film Centre's First Feature Project. Despite its low budget, the film achieved moderate commercial success and has acquired something of a cult status as a niche science-fiction title.

Much of the film's appeal lies in its surreal, almost Kafkaesque setting — no extensive attempt is made to explain what the cube in which the characters are confined is, or why it is created, or why the "inmates" were specifically selected to be imprisoned inside. Although the world "outside" is referred to, it is presented in an extremely abstract fashion as either a dark void or a bright white light.

for more see - http://en.wikipedia.org/wiki/Cube_(film)