This is a list of content that was either removed or altered in the final version of Sly Cooper and the Thievius Raccoonus.
- In the Sly Cooper Jampack Winter demo, it was said that the Panda King was the first member of the Fiendish Five instead of Sir Raleigh. Sly Cooper would also learn the climb move from the Panda King's section of the Thievius Raccoonus.
- In the E3 demo, Sly had a different voice and model, as well as different textures.
- Carmelita Fox was originally named "Chase," and wore different clothes. She also had a different model.
- Clue bottles featured a safe dial on them instead of a yellow question mark.
- There is also a cut enemy featured in the E3 demo.
- Some levels in the Isle of Wrath were named differently in the demo.
- The walrus guards in "Tide of Terror" were originally purple instead of brown. The flashlight guards were still squids, but had different looks and walked differently. There was also no dialogue when Sly first approaches "Prowling the Grounds," and no need to double jump up the first ledge.
- Raleigh's level was originally going to be completely underwater and feature a submarine that could turn its "wings" to fit through crevasses.
- Sly's cane had multiple functions, including revealing a hidden laser maze with the spray of some water and freezing enemies to create walkways.
- The game was originally going to feature dancing cash bundles in place of clue bottles, however, they were removed because they would have to be different colors for each area, due to paper money being different colors around the world. The cash would fly into Sly's pouch, which was a satchel around his left arm.
- Originally, Sly's eyes would always be visible, regardless if it was dark or not.
- Sly's original name was going to be JT, but his name was changed early in development.
- The "The Unseen Foe" mission originally was going to feature a barrel similar to "A Cunning Disguise" and "A Daring Rescue."
- Bentley had different lines of dialogue whenever the player would crack the first vault. He would go over the instructions on how to crack it, followed by the combination.
- The job "Into the Machine" originally featured a portion that had giant spinning machine parts. While these machine parts did not make it into the final release, they can be seen near the end of the level through a grate in the wall.
- According to the bonus commentary for "The Gunboat Graveyard," there was originally going to be a miniboss, which would be a giant fish, but it was cut in the final release.
Community content is available under CC-BY-SA unless otherwise noted.