Cube Zero is a 2004 Canadian independent science fiction psychological horror thriller film, written and directed by Ernie Barbarash. It is the third installment in the Cube film series and a prequel to the first film. Synopsis: A low-level technician of a deadly maze of interconnected cube- shaped rooms makes a fateful decision to lead some of its apparently seemingly occupants to safety.

References:
https://en.wikipedia.org/wiki/Cube_Zero