Discover the history of Super Mario Bros.’ “true sequel” and how it came it be in this new documentary from the Gaming Historian.

Super Mario Bros. took Japan by storm with 3 million copies sold soon after it released. But players were hungry for more and Super Mario Bros. 2 wasn’t cutting it.

Nintendo had it’s work cut out for them with several challenges piling on as the game was being developed. Watch the full video below to learn about how this Italian plumber changed the perception of video games across the country of Japan and more.