Original sentence: HK-47 is a Hunter-Killer assassin droid from the 2003 video game Star Wars: Knights of the Old Republic, its sequel, Star Wars: Knights of the Old Republic II: The Sith Lords, and the Trials of Obi-Wan expansion pack to the massively multiplayer online game Star Wars: Galaxies
Edited sentence: HK-47 is a Hunter-Killer assassin droid from the 2003 video game Star Wars: Knights of the Old Republic, its sequel, Star Wars: Knights of the Old Republic II: The Sith Lords, and the Trials of Obi-Wan expansion pack to the popular massively multiplayer online game Star Wars: Galaxies