- Not to be confused with World 3-6.
|Time limit||150 seconds|
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To begin, Mario starts off at the bottom of the stage, with Pauline's Hat in front of him and a Road block behind him. The gimmick this level features centers around two different Roads - Mario must use one, then activate the other before the allotted timer of the former wears off. After using the first Road to construct a bridge over one of the layers of spikes, then do the same with the other Road while climbing up the long ladder to the left. At the top of the ladder is the Parasol. Heading down and to the right, Mario must quickly make it across the first bridge just before the timer runs out, resetting them both. Now toward the end of the stage, Mario may simply collect the Key to unlock the Key Door, clearing the level. Before doing so, he may collect the Bag just to the left and defeat the two Aqua Men.
- Aqua Men (2)
Pauline's lost items
Within this stage, Pauline's lost items can be found in the following order and in the following places:
- Hat: At the very beginning of the level, directly in the way of Mario's path.
- Bag: On the small platform left of the Aqua Men.
- Parasol: In the top left hand corner, collected after climbing up the long ladder.