On the cusp of Saw breaking big, Cube Zero was the final attempt at propelling this franchise about people being stuck in elaborate traps into the mainstream. Directed by Cube 2: Hypercube producer Ernie Barbarash, it is the third film in the bunch and a prequel to the original. It showcases not only the amnesiac captives navigating the ever-shifting prison but also the guards in the control room tasked with watching over the mayhem.