Mario comes here to look for a Royal Sticker. The start of the fortress, inside is a block that will change the bridge's direction when hit. North exit, there is a Save Block and Bowser Tape that can be pulled to cover half the spikes with carpet. The east exit leads to an area where Bob-ombs try and land on him, after that Mario makes it to the second bridge room to the east. There will be some coins and a Shiny Jump sticker behind a fake wall to the right.
When Mario heads north, he will be blown off the bridge by two fans when trying to cross the bridge. The player can pass this by switching to Paperize Mode and placing two unwanted stickers over the fans, the player will quickly have to cross the bridge again, for they won't last. Then Mario reaches another outside area with gates blocking the way and more Bob-ombs, which Mario must lure to clear the way.
The next bridge room seems to have a useless block, until Mario goes into Paperize Mode and re-sticks the block the correct way. Heading south, Mario will pull off more Bowser Tape to cover the rest of the spikes. The last area is a winding staircase in a tower that leads to the fight with the boss. Luigi can be seen while Mario walks toward the staircase.
An outline for a Secret Door sticker is located in the outside area with the fans that blow Mario off the bridge, it can be seen on the wall when he falls off. The hidden passage leads the player to the Squirt Gun Thing.
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