World 7-Castle (New Super Mario Bros. Wii)
From the Super Mario Wiki, the Mario encyclopedia
This level begins near two giant Skewers, with a Dry Bones and two ? Blocks on a platform in between. Some moving metal platforms are encountered, with Skewers in between them. Dry Bones and a Big Dry Bones are found around the metal platforms. A fast Skewer is found before the midway point. A metal platform with a ? Block above it is after the midway point, with Skewers around it. Two Sledge Bros. are found, with two giant Skewers following. A lift with Skewers around it is found, along with a group of three Skewers together. A ? Block is found, followed by a long line of Skewers. Following the Skewers, a Sledge Bro can be found before the boss door. A Hidden Block containing a Propeller Mushroom is present.
Ludwig von Koopa is fought again here. Magikoopa forces the fight to take place on three moving platforms which change height at times. Ludwig fires four navy-blue fireballs, then jumps to a nearby platform with flutter jumping. While he is casting his spell is when the player should jump on him.
If the player completes World 7-6, a vine leads them into a tower of the Castle. If they choose this path, they are taken into a hidden room of the castle. If the player goes through the pipe in the room, they are dropped right in front of the door to Ludwig's battle.