Shroob Castle is the Shroobified version of Princess Peach's Castle, after the castle was taken over by the evil Shroobs. This dark, purple castle is the setting of final chapter in Mario & Luigi: Partners in Time. Quite the contrary, the Save Album recognizes it as Peach's Castle of the Past, despite the fact that Princess Shroob has complete control over it.
The castle towers were changed into tall purple mushrooms, along with all the pillars and bushes. The castle itself glows purple and is completely Shroobified. Inside, a lot of the castle seems the same as the original, only darker, with the Shroob emblem and more violet in coloration. The map looks fairly as the one in the future castle. Glowing purple mushrooms grow all over and a giant statue of the castle's ruler, Princess Shroob, can also be found here, and Shroob saucers fly around the exterior of the castle. Beneath the castle, is an underground cellar, unlike the Shroob castle, it has the same music from the cellars in the original castle. It has a few enemies, most of them being Shroobsworth, Shroob Rex and Soul Bubbles. A Chain Chomp (non-Shroobified) pesters Mario, Luigi, Baby Mario and Baby Luigi here as well.
Names in other languages
Peach's Castle of the Past