Star Wars: The Force Unleashed is a Star Wars video game that takes place between the films Star Wars Episode III: Revenge of the Sith and Star Wars Episode IV: A New Hope. Being the centerpiece of the Star Wars: The Force Unleashed multimedia project, the game was released on the Xbox 360, PlayStation 3 and Wii as well as the PlayStation 2, PlayStation Portable, Nintendo DS and the iPhone. Thus, LucasArts worked in conjunction with Industrial Light & Magic, Pixelux Entertainment, and NaturalMotion to create a next-gen Star Wars experience. The game showcases Digital Molecular Matter (DMM), an extremely detailed and realistic material physics engine developed by Pixelux, and euphoria, a realistic bio-mechanical A.I. engine by NaturalMotion. The Force Unleashed was originally slated for release in November 2007 but was delayed to the spring of 2008 and later delayed again to that summer. The final version of the game was released on September 16, 2008. A demo was made available on Xbox LIVE and Playstation Network for download on August 21, 2008. New DLC and a PC/Mac version with exclusive content was announced at Comic-Con International 2009.