Jetée

I don't quite think this fits the genre squarely, but I think this film is at least a similar-shaped polygon that resembles your initial description.

millions

I don't know if it received as well outside The Great Isle, but I highly recommend you watch this feature, even if it doesn't truly conform to the caper formula.

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As human beings, our greatness lies not so much in being able to remake the world (that is the myth of the Atomic Age) as in being able to remake ourselves.

—Mohandas K. Gandhi