"The HBO Cube embraces the spirit of HBO telling deeper more engaging stories in innovative ways. Demonstrating that a change in perspective changes everything." [HBO, 2009]
The Cube shows a scene shot by four cameras from different angles, and the HBO claims, "only when you've seen all four sides of the story will you see the bigger picture". Each scenes are positioned in a space where the viewer can select which scene to watch next (below), and view their progress as a diagram (bottom).
HBO [2009] It's More than You Imagined. [online] http://hboimagine.com/