Super Mario Bros. 2

Super Mario Bros. 2 (titled Super Mario Bros. USA in Japan due to it being developed for American audiences as a replacement for the initial Super Mario Bros. 2, called Super Mario Bros.: The Lost Levels) is a sequel to Super Mario Bros. for the Nintendo Entertainment System. It was adapted from a Japanese Famicom Disk System game titled Doki Doki Panic, but with Mario characters and elements instead. Largely because of this, several Doki-Doki Panic-originating characters and elements, such as Peach levitating (originally belonging to the character Lina) as well as Shy Guys, Bob-Ombs, and Birdo, became incorporated into the Mario franchise.

A main difference between Doki Doki Panic and Super Mario Bros. 2 in overall plotline is that the former game involved two kids accidentally wrecking a storybook and causing the story's main antagonist both in-universe and in the game itself, a villainous frog named Wart, to abduct them and requiring a Middle Eastern family to rescue the kids, while the latter had Mario undergoing dreams involving Wart's takeover of a dream land named Subcon, as well as him and his friends accidentally stumbling upon it, with the ending strongly implying that the entire events of the game were the result of a dream Mario had. Wart, later called Mamu after his Japanese name, later reappeared in The Legend of Zelda: Link's Awakening, also a dream-related game, only this time as a minor ally character.