Super Mario Bros. World 8

Let me just be upfront: World 8 was so hard to do that I decided to record it level by level and edit it into one big video.
Rock Around the Clock
song by Bill Haley and the Comets
cover by Lindenstreet (go give him a sub or two, will ya?): • Bill Haley And The Com...
The following text is taken directly from the Super Mario Wiki, which in turn is taken directly from the NES instruction booklet localization.
One day the kingdom of the peaceful mushroom people was invaded by the Koopa, a tribe of turtles famous for their black magic. The quiet, peace-loving Mushroom People were turned into mere stones, bricks and even field horsehair plants, and the Mushroom Kingdom fell into ruin.
The only one who can undo the magic spell on the Mushroom People and return them to their normal selves is the Princess Toadstool, the daughter of the Mushroom King. Unfortunately, she is presently in the hands of the great Koopa turtle king.
Mario, the hero of the story (maybe) hears about the Mushroom People's plight and sets out on a quest to free the Mushroom Princess from the evil Koopa and restore the fallen kingdom of the Mushroom People.
You are Mario! It's up to you to save the Mushroom People from the black magic of the Koopa!
Source: www.mariowiki.....