Dan Trachtenberg's stunning short film Portal: No Escape was one of this year's true fan-created delights. A newly uploaded Making of video showcases how it was done, from storyboard to screen. Hit the jump for a peek behind the curtain.
The following video is a concept short based on Valve's Portal. Dan Trachtenberg's film first premiered at the "Totally Rad Show" panel at this year's Comic-Con, and is just now making its way to YouTube. Check it out after the jump!