World 8-4 (Super Mario Maker for Nintendo 3DS)
From the Super Mario Wiki, the Mario encyclopedia
The first Power Up is a Weird Mushroom. All Poison Mushrooms have been replaced with Goombas. The Sub Area changed drastically, the entrance is now the second Pipe and the two original Warp Pipes are the exits of the sub area and only exits as there are One-Way Walls block them in the sub area. In the sub area, the Pipe back to the main area is blocked by Hidden Blocks. Nearby is a ? Block containing a Weird Mushroom. After this is a Mushroom Platform followed by 2 Flimsy Lifts then another Mushroom Platform with a Red Koopa Troopa on it. After this are 3 Bridges with 2 Red Koopa Troopas on one of them as well as a Blooper and a Red Koopa Paratroopa near the Bridges. Then a Lift followed by another Mushroom Platform appears. After this are two Flimsy Lifts and a Blooper. Then, two Mushroom Platforms with a Red Koopa Troopa on the lower one. This is followed by 2 Hard Blocks and then 3 Mushroom Platforms with a Red Koopa Troopa and a ? Block containing a Weird Mushroom near the lower one. After this, another Mushroom Platform with a Red Koopa Troopa on it, followed by 3 Lifts, 2 of which are Flimsy, and a Blooper. Two more Mushroom Platforms and one Blooper appear after this. After this, a Red Koopa Paratroopa followed by two Mushroom Platforms. There is a Vine in a ? Block to the first Pipe. There is a nearby Fire Bar, which will get near the vine. In order to get to the next area, the player must be Weird Mario. In the next area is a fight with Bowser Jr. with 2 Fire Bars circling the area the fight takes place. If the player beats Bowser Jr., he or she can go through the Key Door and receive two 1-Up Mushrooms before using a Vine to leave.