David Cage, writer and director of Quantic Dream's Heavy Rain, has released a lengthy video of an entire level from the game, along with detailed commentary about how the game works. He demonstrates how to operate the UI, showing how contextual menus let you control actions, dialog, and even your character's thoughts, while also showcasing how the game's investigatory system works and even a few fighting-related quick-time events. 1Up recently spoke with Cage about his time in the games industry, including his previous work on Indigo Prophecy. They also did a Heavy Rain preview of their own, and spoke briefly about post-launch plans. The game is due out next year for the PS3.