Teased earlier this week, players will control a deadly bounty hunter as he uses human skills and powerful weaponry and gadgets, rather than the Force, to hunt down targets.
Taking place in a "never-before-seen dark and mature world", the third-person shooter will bring the dangerous Coruscant underworld to life.
"We're excited to share one of the projects LucasArts has been hard at work developing," said LucasArts president Paul Meegan. "Star Wars 1313 dives into a part of the Star Wars mythos that we've always known existed, but never had a chance to visit.
"We are committed to bringing the best gameplay experience and visual fidelity to life and I truly believe the work we are showcasing at E3 will speak for itself."
Developed internally at LucasArts, the project will introduce an integrated approach to development by incorporating Industrial Light & Magic, Lucasfilm Animation Ltd. and Skywalker Sound.
More details for the project, including release platforms, will be revealed in the coming months.
Microsoft released Xbox 360 exclusive Kinect Star Wars earlier this year.
The E3 Expo will take place in Los Angeles from June 4 to June 7.
> E3 2012: Digital Spy's coverage from the world's biggest gaming expo
Watch a trailer for Kinect Star Wars below: