There were three levels planned and almost finished for the game but cut: The first was a level in the Episode I chapter which has the player playing the scene where Anakin accidently attacks and destroys a Trade Federation ship in the space above Naboo. The second one was for the Episode II levels and featured a playable version of Anakin and Obi-Wan's chase of Zam Weasel in a speeder throughout Coruscant like in the beginning of the movie. The third was the scene in Episode III where Obi-Wan chases General Grevious around Utapau on a Boga creature.

The first level was cut because the developers thought that it bloated its Episode's level count, and they wanted the number of levels between all of them to be mostly even. It is unknown why the Speeder chase was cut, but the Boga chase level was cut due to the developers thinking it clashed with the game's co-op multiplayer feature. Nonetheless, the Trade Federation ship level and the Zam Weasel Chase would eventually be realized in LEGO Star Wars: The Complete Saga. However, the Boga chase level didn't appear in that game at all.

An image of a stained glass version of Crash Bandicoot villain Dr. Neo Cortex can be found in the game's data which was left over from Crash Bandicoot: The Wrath of Cortex.

A seashell graphic and a video of the Luxo Jr. Pixar film opening logo can be found in the folders in the game's data with both being used for testing. Both of these are also reused assets from Traveler's Tales' previous Finding Nemo game.

Some of the death sound effects for the characters are taken from the first two episodes of the Star Wars prequel trilogy. Both Qui-Gon Jinn and Darth Maul get their death sounds from "Episode I: The Phantom Menace" when they are pierced by each other's respective lightsabers. Jar-Jar has two death sounds that come from scenes in The Phantom Menace where he gets frightened by a Colo Claw Fish and failing to balance some cans in Watto's Junkshop.

As for "Episode II: Attack of the Clones", C-3PO also has two death sounds; one from when he is excited to be reunited with Anakin and Padme, and the other comes from when he's lost in the Geonosis droid factory. Geonosians also get their death sound from a scene in the droid factory (and oddly enough, so does Watto despite being Toydarian). Obi-Wan's death sound originates from when he's struck by lasers from the Slave I during his duel with Jango Fett. Jango also gets his death sound from the same duel when he gets kicked by Obi-Wan off of a platform. Anakin and Padme both get their death sounds from the Geonosis arena scene; Anakin's is from when he gets dragged by the Reek and Padme's is a high-pitched version of her getting injured by the Nexu. Finally, Yoda's death sound comes from the beginning of his duel with Count Dooku.

At the beginning of "Chapter 5 - Ruin of the Jedi" in Revenge of the Sith, Obi-Wan Kenobi and Yoda encounter a group of Clone Troopers disguised as Jedi outside of the Jedi Temple. This scene is based off of a deleted scene in the film Star Wars Episode III: Revenge of the Sith.