Many of the characters from the movie, such as Padme Amidala and C-3PO, are strangely absent.
Once the game is completed, two new missions appear. One is an alternate ending to the Mustafar duel where the player controls Anakin instead of Obi-Wan. The other is a bonus mission that takes place years later on the 1st Death Star with the player controlling Darth Vader to defeat Obi-Wan Kenobi.
Released two weeks before the film it is based on.
Count Dooku is killed with a stab to the stomach rather than the decapitation he received in the film.
Level 13 of the game features Obi-Wan escaping Order 66 in a completely different way than that in the movie.