World Mushroom-Ghost House
World Mushroom-Ghost House is a level in New Super Mario Bros. 2. This level (as well as World 6-) is a maze-like Ghost House where almost every door leads to a different room, thus comprising of several areas. The main objective of this level is to make Mario's way up from the basement of the house (the starting point) to the top of the house where an exit door is to be found to reach the Goal Pole.
Mario begins in the basement of the level, where two moving ? Blocks can be found, the left one containing a Super Leaf. There are two elevated doors, one on the left and another on the right which leads to different areas. There is a Gold Ring above Mario's starting position which can be obtained by using Raccoon Mario to fly to the top platform with the Gold Ring. The two Boos in the room will then turn gold and begin to move away from Mario while producing coins.
Mario enters an area that is just above Area 1 and below Area 3. There is a ? Block on the left containing a coin and another on the right containing a Super Leaf. The two doors at the bottom are no longer accessible. However, there is another fork in the path, this time the player has to choose between the three elevated doors. Above the three doors the player can additionally find a platform with a Coin Roulette Block.
This area is at the highest floor of the main room. There is only one accessible door remaining in this area, which is the one elevated. There are also two Boos in the room. Two ? Blocks can be found. The left one contains a Super Leaf.
Through the door, three more ? Switches can be found. There are three paths here which is blocked by blue blocks. These blocks change positions when activating a ? Switch. The player has to combine any and only two switches to open up a path. The first two switches opens up the middle path, the first and last switches opens up the bottom paths and the last two switches opens up the top path. The middle path leads to a door, which leads back to the same room. Both the top and bottom path lead to the same door. This door leads outside the house where there are three Brick Blocks and two Boos. At the end is the flagpole.
The secret exit door is located in the final room beside the ? Switch that causes the third Star Coin to appear. When activating the switch, a door will appear on the other side of the same small area. Going through the door leads to an area outside the house. A Big Boo can be seen hiding several Brick Blocks. Going past him is the flagpole.