Super Mario Bros. Lost Levels Walkthrough Part 5: Difficulty Drop?!?!

I'm just as surprised as you are! I blazed through these levels in comparison to what happened in the last two videos. Even 6-4, the one I had the most trouble with this part, I didn't have half as many deaths as I did in 4-3.

Level Time Stamps:
6-1... 0:00
6-2... 5:00
6-3... 7:07
6-4... 9:19

Enjoy!