Some speedruns can be truly captivating (and if you don’t believe me, you should watch the speedrun of the player who finished Ocarina of time in 24 minutes.) Completing a game without making any mistakes implies being extremely familiar with it, its glitches, design and so on. Therefore, only a handful of people are able to perform such an overly complex feat.
Such as this player who was able to beat The Legend of Zelda: Majora’s Mask in 6 hours, setting a new world record. I embedded the five-part speedrun below this post, but you can also find the entire run on Link’s Hideaway.