Star Wars: The Force Unleashed debuted in 2008 to less than stellar reviews, but sales of the game were strong. A sequel for the game is due out in October, and the developers spoke at length with the Guardian's Games blog about the improvements they've been working on. One of their priorities was adding depth to the combat system to make it less of a button-mash. "The team has completely redesigned all the familiar Force powers from the first title including Force Push and Force Grip, and has added a few newcomers including the potentially amusing Force Mind Trick that'll allow you to trick Storm Troopers into leaping from high ledges." Enemy AI is another area that's getting some love, and they're trying to make level design more open and less linear. The team's confidence in the changes they're making stems in part from much greater familiarity with their game-building tools. "Like its predecessor, Force Unleashed 2 will combine three third-party physics engines, Havok, Euphoria and Digital Molecular Matter, to provide cutting edge human animation, materials effects and authentic physical forces. ... 'Whenever you're building the first iteration [of a game series] and a brand new game engine at the same time, everything comes in hot and fast – we were literally figuring out how to get the most out of those three technologies all the way up to shipping. The DLC then helped us to learn more, and that knowledge has given us the biggest leap forward.'" A trailer for the game was released at E3.