Short answers, pulled from the story.
Star Wars: The Force Unleashed is set in the years between Revenge of the Sith and A New Hope. Players control Galen Marek, known as Starkiller, a secret apprentice trained by Darth Vader to hunt surviving Jedi. The story follows his gradual move toward redemption.
Sam Witwer voiced Starkiller, the game's protagonist. Witwer also voiced Emperor Palpatine in the same game. He secured the role after a 45-minute audition in which he demonstrated a deep understanding of the character.
Star Wars: The Force Unleashed sold over one million copies in its debut month and reached six million total by July 2009. The game eventually surpassed seven million copies, making it both the fastest-selling Star Wars game and LucasArts' fastest-selling title.
Star Wars: The Force Unleashed was released in North America on the 16th of September 2008. It reached Australia and Southeast Asia on September 17 and Europe on September 19 of the same year.
Following The Walt Disney Company's acquisition of Lucasfilm in 2012, Star Wars: The Force Unleashed was reclassified in 2014 as part of the non-canonical Star Wars Legends continuity. Its version of the Rebel Alliance's origin was replaced by other official Star Wars media, including the television series Star Wars Rebels.
Star Wars: The Force Unleashed was built on LucasArts' proprietary Ronin engine and integrated three third-party systems: Havok for rigid body physics, Pixelux Entertainment's Digital Molecular Matter for destructible environments, and NaturalMotion's Euphoria for non-player character artificial intelligence.