Castle Machinery

''Watch out! Doctor Nitrus Brio isn't far and and an evil crate bridge tries to stop your quest for the Gem! Be fast and escape the Castle Machinery! -Level description''thumb|500px|right

Castle Machinery is the twenty-fifth level in Crash Bandicoot. It is right before the boss fight against Doctor Nitrus Brio. If you have obtained the Green Gem, a secret platform appears right next to where the level begins, taking you up to a secret area that has a lot of extra lives preparing you for the forthcoming challenges. There is then another platform there that takes you to the end of the level. Oddly, this is the only level in the game with a secret Gem route with crates only in the main route; in fact, taking the full Gem route will cause the player to miss all the crates in this level.

Trivia

 * This level's name appears to be an in-jokey reference to "Castile machinery", i.e. the equipment used to make Castile soap. According to unreleased behind-the-scenes material, Mark Mothersbaugh of Mutato Muzika is a walking encyclopaedia of soap knowledge, and gave a lengthy explanation of the modern mechanical method of making Castile soap during breaks while composing the music for this stage (and Heavy Machinery).
 * Alternately, it could be an homage to the little-known underground J-trip-hop group, Castle Mashed Creamery. A few fans believe that their work heavily influenced Mothersbaugh's work on this game.
 * It is entirely possible to jump to the goal of this level from the starting platform, but it cannot be done.