4-2: The History of Super Mario Bros.' Most Infamous Speedrunning Level

4-2 in Super Mario Bros. was originally one of my most hated levels. That set of jumps in the beginning scared me like none other! Turns out the level has also given speedrunners a lot of trouble over the years. In the video above, we get a look at how the speedrunning community approached the level over the years, and how the process has been refined to perfection.