World 2-Ghost House
Mario starts in front of a Boo and a ? Block, which moves to the left when the player attempts to hit it. This is similar to the following ? Block and Brick Block, which the ? Block contains a Super Leaf. This is followed by a door to the next area. The following area contains a Boohemoth. Similar to a Boo, it will move when the player is facing away from it, and the screen scrolls with its movement. When Mario is looking at it, it stops. However, if Mario looks at it for a long time, it will peek and move forward slightly. The player cannot go through the Boohemoth because of its huge size, and if the Boohemoth obstructs them near an obstacle, they will die. Also, Mario and Luigi cannot defeat the Boohemoth, even when powered up with a Gold Flower, Invincibility Leaf or Super Star. Going through the door, there is a Boo and a Brick Block which turns into a Gold Block. There is a purple block similar to that of World 7-1 of New Super Mario Bros. Wii which moves up and down, blocking Mario's path. Just after that, Mario will encounter some Trampoline Blocks hidden beneath the floor. A few ? Blocks follow, one of them containing a Super Leaf. A Boo follows. Another purple block can be found which moves left and right. Dash Coins follow with more bouncy blocks, where another platform can be found which lowers when Mario stands on it. Further down a tilting purple block can be found with a Red Ring. This is followed by more bouncy blocks, another purple tilting platform and the door to the next area. In the next area, there are several fake doors. The real door is located at the bottom of the area hidden in a platform on the right which lowers when Mario stands on it. The door leads outside of the house, where several Peepas circle a platform which helps Mario reach the top of the Goal Pole.
All three Star Coins are located in the second area, where the Boohemoth is.
After the player sees or collects the second Star Coin, Mario needs to go forward to the lowest floor (not the platform) and trigger a hidden block to the left. Jump and a ? Block containing a vine leading to the flagpole will appear.
This exit unlocks a red Toad House and World 2-B.